public unsafe void ProcessFrame(UnmanagedImage videoFrame)
{
lock (sync)
{
if (previousFrame == null)
{
width = videoFrame.Width;
height = videoFrame.Height;
previousFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
motionFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
frameSize = motionFrame.Stride * height;
if (suppressNoise)
{
tempFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
}
Tools.ConvertToGrayscale(videoFrame, previousFrame);
return;
}
if ((videoFrame.Width != width) || (videoFrame.Height != height))
{
return;
}
Tools.ConvertToGrayscale(videoFrame, motionFrame);
byte *prevFrame = (byte *)previousFrame.ImageData.ToPointer();
byte *currFrame = (byte *)motionFrame.ImageData.ToPointer();
int diff;
for (int i = 0; i < frameSize; i++, prevFrame++, currFrame++)
{
diff = (int)*currFrame - (int)*prevFrame;
*prevFrame = *currFrame;
*currFrame = ((diff >= differenceThreshold) || (diff <= differenceThresholdNeg)) ? (byte)255 : (byte)0;
}
if (suppressNoise)
{
SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, frameSize);
erosionFilter.Apply(tempFrame, motionFrame);
}
pixelsChanged = 0;
byte *motion = (byte *)motionFrame.ImageData.ToPointer();
for (int i = 0; i < frameSize; i++, motion++)
{
pixelsChanged += (*motion & 1);
}
}
}
/// <summary>
/// Process new video frame.
/// </summary>
///
/// <param name="videoFrame">Video frame to process (detect motion in).</param>
///
/// <remarks><para>Processes new frame from video source and detects motion in it.</para>
///
/// <para>Check <see cref="MotionLevel"/> property to get information about amount of motion
/// (changes) in the processed frame.</para>
/// </remarks>
///
public unsafe void ProcessFrame(UnmanagedImage videoFrame)
{
lock ( _sync )
{
// check background frame
if (_backgroundFrame == null)
{
_lastTimeMeasurment = DateTime.Now;
// save image dimension
_width = videoFrame.Width;
_height = videoFrame.Height;
// alocate memory for previous and current frames
_backgroundFrame = UnmanagedImage.Create(_width, _height, PixelFormat.Format8bppIndexed);
_motionFrame = UnmanagedImage.Create(_width, _height, PixelFormat.Format8bppIndexed);
_frameSize = _motionFrame.Stride * _height;
// temporary buffer
if (_suppressNoise)
{
_tempFrame = UnmanagedImage.Create(_width, _height, PixelFormat.Format8bppIndexed);
}
// convert source frame to grayscale
Tools.ConvertToGrayscale(videoFrame, _backgroundFrame);
return;
}
// check image dimension
if ((videoFrame.Width != _width) || (videoFrame.Height != _height))
{
return;
}
// convert current image to grayscale
Tools.ConvertToGrayscale(videoFrame, _motionFrame);
// pointers to background and current frames
byte *backFrame;
byte *currFrame;
int diff;
// update background frame
if (_millisecondsPerBackgroundUpdate == 0)
{
// update background frame using frame counter as a base
if (++_framesCounter == _framesPerBackgroundUpdate)
{
_framesCounter = 0;
backFrame = (byte *)_backgroundFrame.ImageData.ToPointer( );
currFrame = (byte *)_motionFrame.ImageData.ToPointer( );
for (int i = 0; i < _frameSize; i++, backFrame++, currFrame++)
{
diff = *currFrame - *backFrame;
if (diff > 0)
{
(*backFrame)++;
}
else if (diff < 0)
{
(*backFrame)--;
}
}
}
}
else
{
// update background frame using timer as a base
// get current time and calculate difference
DateTime currentTime = DateTime.Now;
TimeSpan timeDff = currentTime - _lastTimeMeasurment;
// save current time as the last measurment
_lastTimeMeasurment = currentTime;
int millisonds = (int)timeDff.TotalMilliseconds + _millisecondsLeftUnprocessed;
// save remainder so it could be taken into account in the future
_millisecondsLeftUnprocessed = millisonds % _millisecondsPerBackgroundUpdate;
// get amount for background update
int updateAmount = (millisonds / _millisecondsPerBackgroundUpdate);
backFrame = (byte *)_backgroundFrame.ImageData.ToPointer( );
currFrame = (byte *)_motionFrame.ImageData.ToPointer( );
for (int i = 0; i < _frameSize; i++, backFrame++, currFrame++)
{
diff = *currFrame - *backFrame;
if (diff > 0)
{
(*backFrame) += (byte)((diff < updateAmount) ? diff : updateAmount);
}
else if (diff < 0)
{
(*backFrame) += (byte)((-diff < updateAmount) ? diff : -updateAmount);
}
}
}
backFrame = (byte *)_backgroundFrame.ImageData.ToPointer( );
currFrame = (byte *)_motionFrame.ImageData.ToPointer( );
// 1 - get difference between frames
// 2 - threshold the difference
for (int i = 0; i < _frameSize; i++, backFrame++, currFrame++)
{
// difference
diff = *currFrame - *backFrame;
// treshold
*currFrame = ((diff >= _differenceThreshold) || (diff <= _differenceThresholdNeg)) ? (byte)255 : (byte)0;
}
if (_suppressNoise)
{
// suppress noise and calculate motion amount
AForge.SystemTools.CopyUnmanagedMemory(_tempFrame.ImageData, _motionFrame.ImageData, _frameSize);
_erosionFilter.Apply(_tempFrame, _motionFrame);
if (_keepObjectEdges)
{
AForge.SystemTools.CopyUnmanagedMemory(_tempFrame.ImageData, _motionFrame.ImageData, _frameSize);
_dilatationFilter.Apply(_tempFrame, _motionFrame);
}
}
// calculate amount of motion pixels
_pixelsChanged = 0;
byte *motion = (byte *)_motionFrame.ImageData.ToPointer( );
for (int i = 0; i < _frameSize; i++, motion++)
{
_pixelsChanged += (*motion & 1);
}
}
}
/// <summary>
/// Process new video frame.
/// </summary>
///
/// <param name="videoFrame">Video frame to process (detect motion in).</param>
///
/// <remarks><para>Processes new frame from video source and detects motion in it.</para>
///
/// <para>Check <see cref="MotionLevel"/> property to get information about amount of motion
/// (changes) in the processed frame.</para>
/// </remarks>
///
public void ProcessFrame(UnmanagedImage videoFrame)
{
lock (sync)
{
// check previous frame
if (previousFrame == null)
{
// save image dimension
width = videoFrame.Width;
height = videoFrame.Height;
// alocate memory for previous and current frames
previousFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
motionFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
frameSize = motionFrame.Stride * height;
// temporary buffer
if (suppressNoise)
{
tempFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
}
// convert source frame to grayscale
Accord.Vision.Tools.ConvertToGrayscale(videoFrame, previousFrame);
return;
}
// check image dimension
if ((videoFrame.Width != width) || (videoFrame.Height != height))
{
return;
}
// convert current image to grayscale
Accord.Vision.Tools.ConvertToGrayscale(videoFrame, motionFrame);
unsafe
{
// pointers to previous and current frames
byte *prevFrame = (byte *)previousFrame.ImageData.ToPointer();
byte *currFrame = (byte *)motionFrame.ImageData.ToPointer();
// difference value
int diff;
// 1 - get difference between frames
// 2 - threshold the difference
// 3 - copy current frame to previous frame
for (int i = 0; i < frameSize; i++, prevFrame++, currFrame++)
{
// difference
diff = (int)*currFrame - (int)*prevFrame;
// copy current frame to previous
*prevFrame = *currFrame;
// treshold
*currFrame = ((diff >= differenceThreshold) || (diff <= differenceThresholdNeg)) ? (byte)255 : (byte)0;
}
if (suppressNoise)
{
// suppress noise and calculate motion amount
Accord.SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, frameSize);
erosionFilter.Apply(tempFrame, motionFrame);
}
// calculate amount of motion pixels
pixelsChanged = 0;
byte *motion = (byte *)motionFrame.ImageData.ToPointer();
for (int i = 0; i < frameSize; i++, motion++)
{
pixelsChanged += (*motion & 1);
}
}
}
}
/// <summary>
/// Process new video frame.
/// </summary>
///
/// <param name="videoFrame">Video frame to process (detect motion in).</param>
///
/// <remarks><para>Processes new frame from video source and detects motion in it.</para>
///
/// <para>Check <see cref="MotionLevel"/> property to get information about amount of motion
/// (changes) in the processed frame.</para>
/// </remarks>
///
public unsafe void ProcessFrame(UnmanagedImage videoFrame)
{
lock ( _sync )
{
// check previous frame
if (_previousFrame == null)
{
// save image dimension
_width = videoFrame.Width;
_height = videoFrame.Height;
// alocate memory for previous and current frames
_previousFrame = UnmanagedImage.Create(_width, _height, videoFrame.PixelFormat);
_motionFrame = UnmanagedImage.Create(_width, _height, PixelFormat.Format8bppIndexed);
_motionSize = _motionFrame.Stride * _height;
// temporary buffer
if (_suppressNoise)
{
_tempFrame = UnmanagedImage.Create(_width, _height, PixelFormat.Format8bppIndexed);
}
// conpy source frame
videoFrame.Copy(_previousFrame);
return;
}
// check image dimension
if ((videoFrame.Width != _width) || (videoFrame.Height != _height))
{
return;
}
// pointers to previous and current frames
byte *prevFrame = (byte *)_previousFrame.ImageData.ToPointer( );
byte *currFrame = (byte *)videoFrame.ImageData.ToPointer( );
byte *motion = (byte *)_motionFrame.ImageData.ToPointer( );
int bytesPerPixel = Tools.BytesPerPixel(videoFrame.PixelFormat);
// difference value
// 1 - get difference between frames
// 2 - threshold the difference (accumulated over every channels)
// 3 - copy current frame to previous frame
for (int i = 0; i < _height; i++)
{
var currFrameLocal = currFrame;
var prevFrameLocal = prevFrame;
var motionLocal = motion;
for (int j = 0; j < _width; j++)
{
var diff = 0;
for (int nbBytes = 0; nbBytes < bytesPerPixel; nbBytes++)
{
// difference
diff += Math.Abs(*currFrameLocal - *prevFrameLocal);
// copy current frame to previous
*prevFrameLocal = *currFrameLocal;
currFrameLocal++;
prevFrameLocal++;
}
diff /= bytesPerPixel;
// threshold
*motionLocal = (diff >= _differenceThreshold) ? (byte)255 : (byte)0;
motionLocal++;
}
currFrame += videoFrame.Stride;
prevFrame += _previousFrame.Stride;
motion += _motionFrame.Stride;
}
if (_suppressNoise)
{
// suppress noise and calculate motion amount
Accord.SystemTools.CopyUnmanagedMemory(_tempFrame.ImageData, _motionFrame.ImageData, _motionSize);
_erosionFilter.Apply(_tempFrame, _motionFrame);
}
// calculate amount of motion pixels
_pixelsChanged = 0;
motion = (byte *)_motionFrame.ImageData.ToPointer( );
for (int i = 0; i < _motionSize; i++, motion++)
{
_pixelsChanged += (*motion & 1);
}
}
}
/// <summary>
/// Process new video frame.
/// </summary>
///
/// <param name="videoFrame">Video frame to process (detect motion in).</param>
///
/// <remarks><para>Processes new frame from video source and detects motion in it.</para>
///
/// <para>Check <see cref="MotionLevel"/> property to get information about amount of motion
/// (changes) in the processed frame.</para>
/// </remarks>
///
public unsafe void ProcessFrame(UnmanagedImage videoFrame)
{
lock ( sync )
{
// check background frame
if (backgroundFrame == null)
{
// save image dimension
width = videoFrame.Width;
height = videoFrame.Height;
// alocate memory for background frame
backgroundFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
frameSize = backgroundFrame.Stride * height;
// convert source frame to grayscale
Tools.ConvertToGrayscale(videoFrame, backgroundFrame);
return;
}
// check image dimension
if ((videoFrame.Width != width) || (videoFrame.Height != height))
{
return;
}
// check motion frame
if (motionFrame == null)
{
motionFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
// temporary buffer
if (suppressNoise)
{
tempFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
}
}
// convert current image to grayscale
Tools.ConvertToGrayscale(videoFrame, motionFrame);
// pointers to background and current frames
byte *backFrame;
byte *currFrame;
int diff;
backFrame = (byte *)backgroundFrame.ImageData.ToPointer( );
currFrame = (byte *)motionFrame.ImageData.ToPointer( );
// 1 - get difference between frames
// 2 - threshold the difference
for (int i = 0; i < frameSize; i++, backFrame++, currFrame++)
{
// difference
diff = (int)*currFrame - (int)*backFrame;
// treshold
*currFrame = ((diff >= differenceThreshold) || (diff <= differenceThresholdNeg)) ? (byte)255 : (byte)0;
}
if (suppressNoise)
{
// suppress noise and calculate motion amount
AForge.SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, frameSize);
erosionFilter.Apply(tempFrame, motionFrame);
if (keepObjectEdges)
{
AForge.SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, frameSize);
dilatationFilter.Apply(tempFrame, motionFrame);
}
}
// calculate amount of motion pixels
pixelsChanged = 0;
byte *motion = (byte *)motionFrame.ImageData.ToPointer( );
for (int i = 0; i < frameSize; i++, motion++)
{
pixelsChanged += (*motion & 1);
}
}
}
/// <summary>
/// Process new video frame.
/// </summary>
///
/// <param name="videoFrame">Video frame to process (detect motion in).</param>
///
/// <remarks><para>Processes new frame from video source and detects motion in it.</para>
///
/// <para>Check <see cref="MotionLevel"/> property to get information about amount of motion
/// (changes) in the processed frame.</para>
/// </remarks>
///
public unsafe void ProcessFrame(UnmanagedImage videoFrame)
{
lock ( sync )
{
// check background frame
if (backgroundFrame == null)
{
lastTimeMeasurment = DateTime.Now;
// save image dimension
width = videoFrame.Width;
height = videoFrame.Height;
// alocate memory for previous and current frames
backgroundFrame = UnmanagedImage.Create(width, height, videoFrame.PixelFormat);
motionFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
frameSize = videoFrame.Stride * height;
motionSize = motionFrame.Stride * motionFrame.Height;
// temporary buffer
if (suppressNoise)
{
tempFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
}
// set the backgroundframe
videoFrame.Copy(backgroundFrame);
return;
}
// check image dimension
if ((videoFrame.Width != width) || (videoFrame.Height != height))
{
return;
}
// pointers to background and current frames
byte *backFrame;
byte *currFrame;
int diff;
// update background frame
if (millisecondsPerBackgroundUpdate == 0)
{
// update background frame using frame counter as a base
if (++framesCounter == framesPerBackgroundUpdate)
{
framesCounter = 0;
backFrame = (byte *)backgroundFrame.ImageData.ToPointer( );
currFrame = (byte *)videoFrame.ImageData.ToPointer( );
for (int i = 0; i < frameSize; i++, backFrame++, currFrame++)
{
diff = *currFrame - *backFrame;
if (diff > 0)
{
(*backFrame)++;
}
else if (diff < 0)
{
(*backFrame)--;
}
}
}
}
else
{
// update background frame using timer as a base
// get current time and calculate difference
DateTime currentTime = DateTime.Now;
TimeSpan timeDff = currentTime - lastTimeMeasurment;
// save current time as the last measurment
lastTimeMeasurment = currentTime;
int millisonds = (int)timeDff.TotalMilliseconds + millisecondsLeftUnprocessed;
// save remainder so it could be taken into account in the future
millisecondsLeftUnprocessed = millisonds % millisecondsPerBackgroundUpdate;
// get amount for background update
int updateAmount = (int)(millisonds / millisecondsPerBackgroundUpdate);
backFrame = (byte *)backgroundFrame.ImageData.ToPointer( );
currFrame = (byte *)videoFrame.ImageData.ToPointer( );
for (int i = 0; i < frameSize; i++, backFrame++, currFrame++)
{
diff = *currFrame - *backFrame;
if (diff > 0)
{
(*backFrame) += (byte)((diff < updateAmount) ? diff : updateAmount);
}
else if (diff < 0)
{
(*backFrame) += (byte)((-diff < updateAmount) ? diff : -updateAmount);
}
}
}
backFrame = (byte *)backgroundFrame.ImageData.ToPointer( );
currFrame = (byte *)videoFrame.ImageData.ToPointer( );
byte *motion = (byte *)motionFrame.ImageData.ToPointer( );
byte *currFrameLocal;
byte *backFrameLocal;
byte *motionLocal;
int bytesPerPixel = Tools.BytesPerPixel(videoFrame.PixelFormat);
// 1 - get difference between frames (accumulated on every channel)
// 2 - threshold the difference
for (int i = 0; i < height; i++)
{
currFrameLocal = currFrame;
backFrameLocal = backFrame;
motionLocal = motion;
for (int j = 0; j < width; j++)
{
diff = 0;
for (int nbBytes = 0; nbBytes < bytesPerPixel; nbBytes++)
{
// difference
diff += Math.Abs((int)*currFrameLocal - (int)*backFrameLocal);
currFrameLocal++;
backFrameLocal++;
}
diff /= bytesPerPixel;
*motionLocal = (diff >= differenceThreshold) ? (byte)255 : (byte)0;
motionLocal++;
}
currFrame += videoFrame.Stride;
backFrame += backgroundFrame.Stride;
motion += motionFrame.Stride;
}
if (suppressNoise)
{
// suppress noise and calculate motion amount
AForge.SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, motionSize);
erosionFilter.Apply(tempFrame, motionFrame);
if (keepObjectEdges)
{
AForge.SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, motionSize);
dilatationFilter.Apply(tempFrame, motionFrame);
}
}
// calculate amount of motion pixels
pixelsChanged = 0;
motion = (byte *)motionFrame.ImageData.ToPointer( );
for (int i = 0; i < motionSize; i++, motion++)
{
pixelsChanged += (*motion & 1);
}
}
}
/// <summary>
/// Process new video frame.
/// </summary>
///
/// <param name="videoFrame">Video frame to process (detect motion in).</param>
///
/// <remarks><para>Processes new frame from video source and detects motion in it.</para>
///
/// <para>Check <see cref="MotionLevel"/> property to get information about amount of motion
/// (changes) in the processed frame.</para>
/// </remarks>
///
public unsafe void ProcessFrame(UnmanagedImage videoFrame)
{
//lock ( _sync )
{
// check previous frame
if (_previousFrame == null)
{
// save image dimension
_width = videoFrame.Width;
_height = videoFrame.Height;
// alocate memory for previous and current frames
_previousFrame = UnmanagedImage.Create(_width, _height, PixelFormat.Format8bppIndexed);
_motionFrame = UnmanagedImage.Create(_width, _height, PixelFormat.Format8bppIndexed);
_frameSize = _motionFrame.Stride * _height;
// temporary buffer
if (_suppressNoise)
{
_tempFrame = UnmanagedImage.Create(_width, _height, PixelFormat.Format8bppIndexed);
}
// convert source frame to grayscale
Tools.ConvertToGrayscale(videoFrame, _previousFrame);
return;
}
// check image dimension
if ((videoFrame.Width != _width) || (videoFrame.Height != _height))
{
return;
}
// convert current image to grayscale
Tools.ConvertToGrayscale(videoFrame, _motionFrame);
// pointers to previous and current frames
byte *prevFrame = (byte *)_previousFrame.ImageData.ToPointer( );
byte *currFrame = (byte *)_motionFrame.ImageData.ToPointer( );
// difference value
// 1 - get difference between frames
// 2 - threshold the difference
// 3 - copy current frame to previous frame
for (int i = 0; i < _frameSize; i++, prevFrame++, currFrame++)
{
// difference
var diff = *currFrame - *prevFrame;
// copy current frame to previous
*prevFrame = *currFrame;
// treshold
*currFrame = ((diff >= _differenceThreshold) || (diff <= _differenceThresholdNeg)) ? (byte)255 : (byte)0;
}
if (_suppressNoise)
{
// suppress noise and calculate motion amount
AForge.SystemTools.CopyUnmanagedMemory(_tempFrame.ImageData, _motionFrame.ImageData, _frameSize);
_erosionFilter.Apply(_tempFrame, _motionFrame);
}
// calculate amount of motion pixels
_pixelsChanged = 0;
byte *motion = (byte *)_motionFrame.ImageData.ToPointer( );
for (int i = 0; i < _frameSize; i++, motion++)
{
_pixelsChanged += (*motion & 1);
}
}
}
public unsafe void ProcessFrame(UnmanagedImage videoFrame)
{
lock (sync)
{
if (backgroundFrame == null)
{
lastTimeMeasurment = DateTime.Now;
width = videoFrame.Width;
height = videoFrame.Height;
backgroundFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
motionFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
frameSize = motionFrame.Stride * height;
if (suppressNoise)
{
tempFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
}
Tools.ConvertToGrayscale(videoFrame, backgroundFrame);
return;
}
if ((videoFrame.Width != width) || (videoFrame.Height != height))
{
return;
}
Tools.ConvertToGrayscale(videoFrame, motionFrame);
byte *backFrame;
byte *currFrame;
int diff;
if (millisecondsPerBackgroundUpdate == 0)
{
if (++framesCounter == framesPerBackgroundUpdate)
{
framesCounter = 0;
backFrame = (byte *)backgroundFrame.ImageData.ToPointer();
currFrame = (byte *)motionFrame.ImageData.ToPointer();
for (int i = 0; i < frameSize; i++, backFrame++, currFrame++)
{
diff = *currFrame - *backFrame;
if (diff > 0)
{
(*backFrame)++;
}
else if (diff < 0)
{
(*backFrame)--;
}
}
}
}
else
{
DateTime currentTime = DateTime.Now;
TimeSpan timeDff = currentTime - lastTimeMeasurment;
lastTimeMeasurment = currentTime;
int millisonds = (int)timeDff.TotalMilliseconds + millisecondsLeftUnprocessed;
millisecondsLeftUnprocessed = millisonds % millisecondsPerBackgroundUpdate;
int updateAmount = (int)(millisonds / millisecondsPerBackgroundUpdate);
backFrame = (byte *)backgroundFrame.ImageData.ToPointer();
currFrame = (byte *)motionFrame.ImageData.ToPointer();
for (int i = 0; i < frameSize; i++, backFrame++, currFrame++)
{
diff = *currFrame - *backFrame;
if (diff > 0)
{
(*backFrame) += (byte)((diff < updateAmount) ? diff : updateAmount);
}
else if (diff < 0)
{
(*backFrame) += (byte)((-diff < updateAmount) ? diff : -updateAmount);
}
}
}
backFrame = (byte *)backgroundFrame.ImageData.ToPointer();
currFrame = (byte *)motionFrame.ImageData.ToPointer();
for (int i = 0; i < frameSize; i++, backFrame++, currFrame++)
{
diff = (int)*currFrame - (int)*backFrame;
*currFrame = ((diff >= differenceThreshold) || (diff <= differenceThresholdNeg)) ? (byte)255 : (byte)0;
}
if (suppressNoise)
{
SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, frameSize);
erosionFilter.Apply(tempFrame, motionFrame);
if (keepObjectEdges)
{
SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, frameSize);
dilatationFilter.Apply(tempFrame, motionFrame);
}
}
pixelsChanged = 0;
byte *motion = (byte *)motionFrame.ImageData.ToPointer();
for (int i = 0; i < frameSize; i++, motion++)
{
pixelsChanged += (*motion & 1);
}
}
}
static void Main(string[] args)
{
try
{
bool parm_error = false;
if (args.Length == 0)
{
exitWithHelp(); // Exit! No param
}
//set mandatory parm
string in_path = "";
//optional parm
bool cropcenter = false;
bool emulate = false;
bool debug = false;
//optional blob parm
bool blob = false;
string bfilterw = "";
double bfilterw_min = 1;
double bfilterw_max = 1;
string bfilterh = "";
double bfilterh_min = 1;
double bfilterh_max = 1;
bool blob_noff = false;
bool blob_noshape = false;
bool blob_notrotate = false;
string blob_zone = "";
double blob_zonex = 0.5;
double blob_zoney = 0.5;
//parsing parm
for (int p = 0; p < args.Length; p++)
{
//for each parm get type and value
//ex. -parm value -parm2 value2
//get parm
switch (args[p])
{
case "-debug":
debug = true;
break;
case "-f":
in_path = args[p + 1];
break;
case "-cropcenter":
cropcenter = true;
break;
case "-emulate":
emulate = true;
break;
case "-blob":
blob = true;
break;
case "-bfilterw":
bfilterw = args[p + 1];
break;
case "-bfilterh":
bfilterh = args[p + 1];
break;
case "-bnoff":
blob_noff = true;
break;
case "-bzone":
blob_zone = args[p + 1];
break;
case "-bnoshape":
blob_noshape = true;
break;
case "-bnotrotate":
blob_notrotate = true;
break;
default:
if (args[p].StartsWith("-"))
{
exitNotValid(args[p]); // Exit! Invalid param
}
break;
}
}
//check mandatory param
if (in_path.Equals(""))
{
exitWithHelp();
}
//check others param
if (!bfilterw.Equals(""))
{
RegexOptions options = RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace | RegexOptions.Singleline;
Regex pattern = new Regex(@"((?:[0]\.)?\d+)\-((?:[0]\.)?\d+)", options);
Match match = pattern.Match(bfilterw);
if (match.Success && match.Groups.Count.Equals(3))
{
bfilterw_min = Convert.ToDouble(match.Groups[1].Value.Replace('.', ','));
bfilterw_max = Convert.ToDouble(match.Groups[2].Value.Replace('.', ','));
}
else
{
exitWithError("Opzione '-bfilterw' non valida.", "Specificare i valori minimi e massimi nel seguente formato:", " -bfilterw valoremin-valoremax", " es. -bfilterw 0.30-0.40");
}
}
if (!bfilterh.Equals(""))
{
RegexOptions options = RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace | RegexOptions.Singleline;
Regex pattern = new Regex(@"((?:[0]\.)?\d+)\-((?:[0]\.)?\d+)", options);
Match match = pattern.Match(bfilterh);
if (match.Success && match.Groups.Count.Equals(3))
{
bfilterh_min = Convert.ToDouble(match.Groups[1].Value.Replace('.', ','));
bfilterh_max = Convert.ToDouble(match.Groups[2].Value.Replace('.', ','));
}
else
{
exitWithError("Opzione '-bfilterh' non valida.", "Specificare i valori minimi e massimi nel seguente formato:", " -bfilterh valoremin-valoremax", " es. -bfilterh 0.30-0.40");
}
}
if (!blob_zone.Equals(""))
{
RegexOptions options = RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace | RegexOptions.Singleline;
Regex pattern = new Regex(@"((?:[0]\.)?\d+)\,((?:[0]\.)?\d+)", options);
Match match = pattern.Match(blob_zone);
if (match.Success && match.Groups.Count.Equals(3))
{
blob_zonex = Convert.ToDouble(match.Groups[1].Value.Replace('.', ','));
blob_zoney = Convert.ToDouble(match.Groups[2].Value.Replace('.', ','));
}
else
{
exitWithError("Opzione '-bzone' non valida.", "Specificare le coordinate del punto dove cercare il barcode.", " -bzone x,y", " es. -bzone 0.5,0.5");
}
}
//check validity
if (File.Exists(in_path))
{
in_path = Path.GetFullPath(in_path);
}
else
{
exitFileNotFound(in_path);
}
//START
Stopwatch stopWatch = new Stopwatch();
if (emulate)
{
stopWatch.Start();
}
//Convert to image if PDF
string tmp_path = "";
bool tmp_file = false;
if (Path.GetExtension(in_path).Equals(".pdf"))
{
if (debug)
{
Console.WriteLine("Converting pdf...");
}
tmp_path = in_path + ".png";
tmp_file = true;
libImage.ConvertSingleImage(in_path, tmp_path, 300);
}
else
{
tmp_path = in_path;
}
//Load image in memory and del file
System.Drawing.Bitmap tmp_img;
using (System.Drawing.Bitmap img_source = (Bitmap)Bitmap.FromFile(tmp_path))
{
tmp_img = new Bitmap(img_source);
}
if (tmp_file)
{
File.Delete(tmp_path);
}
//Get Info on page
int page_w = tmp_img.Width;
int page_h = tmp_img.Height;
if (debug)
{
Console.WriteLine("File dimension: w=" + page_w + " h=" + page_h);
}
//Crop Center
if (cropcenter)
{
if (debug)
{
Console.WriteLine("Cropping central image...");
}
int crop_x = Convert.ToInt32(((double)tmp_img.Width * 0.3)),
crop_y = Convert.ToInt32(((double)tmp_img.Height * 0.3)),
crop_width = Convert.ToInt32(((double)tmp_img.Width * 0.7) - crop_x),
crop_height = Convert.ToInt32(((double)tmp_img.Height * 0.7) - crop_y);
//source = source.crop(crop_x, crop_y, crop_width, crop_height);
tmp_img = tmp_img.Clone(new Rectangle(crop_x, crop_y, crop_width, crop_height), PixelFormat.Format32bppArgb);
page_w = tmp_img.Width;
page_h = tmp_img.Height;
if (debug)
{
Console.WriteLine("New file dimension: w=" + page_w + " h=" + page_h);
}
}
else
{
tmp_img = AForge.Imaging.Image.Clone(tmp_img, PixelFormat.Format32bppArgb);
}
//Blob Analysis
if (blob)
{
if (debug)
{
Console.WriteLine("Starting Blob Analysis...");
}
// filter GreyScale
Grayscale filterg = new Grayscale(0.2125, 0.7154, 0.0721);
tmp_img = filterg.Apply(tmp_img);
Bitmap tmp_img_wrk = (Bitmap)tmp_img.Clone();
// filter Erosion3x3
BinaryErosion3x3 filter = new BinaryErosion3x3();
tmp_img_wrk = filter.Apply(tmp_img_wrk);
tmp_img_wrk = filter.Apply(tmp_img_wrk);
tmp_img_wrk = filter.Apply(tmp_img_wrk);
tmp_img_wrk = filter.Apply(tmp_img_wrk);
tmp_img_wrk = filter.Apply(tmp_img_wrk);
tmp_img_wrk = filter.Apply(tmp_img_wrk);
//Binarization
SISThreshold filterSIS = new SISThreshold();
tmp_img_wrk = filterSIS.Apply(tmp_img_wrk);
//Inversion
Invert filterI = new Invert();
tmp_img_wrk = filterI.Apply(tmp_img_wrk);
//Blob Analisys
BlobCounterBase bc = new BlobCounter();
bc.FilterBlobs = true;
if (!bfilterw.Equals(""))
{
bc.MinWidth = Convert.ToInt32(page_w * bfilterw_min); // 0.15 in proporzione è il 20%
bc.MaxWidth = Convert.ToInt32(page_w * bfilterw_max); // 0.30
}
if (!bfilterh.Equals(""))
{
bc.MinHeight = Convert.ToInt32(page_h * bfilterh_min); // 0.10 in proporzione è il 15%
bc.MaxHeight = Convert.ToInt32(page_h * bfilterh_max); // 0.20
}
if (debug)
{
Console.WriteLine("Searching blob (Dimension filter: w=" + bc.MinWidth + "-" + (bc.MaxWidth.Equals(int.MaxValue) ? "max" : bc.MaxWidth.ToString()) + " h=" + bc.MinHeight + "-" + (bc.MaxHeight.Equals(int.MaxValue) ? "max": bc.MaxHeight.ToString()) + ")");
}
bc.ObjectsOrder = ObjectsOrder.Size;
bc.ProcessImage(tmp_img_wrk);
Blob[] blobs = bc.GetObjectsInformation();
if (debug)
{
Console.WriteLine("Blobs found: " + blobs.Count());
}
//Esamina Blobs
int i = 1;
foreach (Blob b in blobs)
{
//Escludi blob contenitore (l'immagine stessa)
if (b.Rectangle.Width == page_w)
{
if (debug)
{
Console.WriteLine("Blob " + i + ": skip! (is container)");
}
i++; continue;
}
//check form factor
if (!blob_noff)
{
double formf = (Convert.ToDouble(b.Rectangle.Width) / Convert.ToDouble(b.Rectangle.Height)) * 100;
if (formf < 95)
{
//skip Form Factor Not a square
if (debug)
{
Console.WriteLine("Blob " + i + ": Check 1 - Form factor > 95 Failed! (form factor is not square " + formf + "<95) Blob Skipped!");
Console.WriteLine("You can disable this check with -bnoff parameter.");
}
i++; continue;
}
if (debug)
{
Console.WriteLine("Blob " + i + ": Check 1 - Form factor > 95 " + formf + " Ok!");
}
}
else if (debug)
{
Console.WriteLine("Blob " + i + ": Check 1 - Form factor > 95 skipped by option -bnoff ");
}
//check zone
if (!blob_zone.Equals(""))
{
Rectangle bZone = b.Rectangle;
bZone.Inflate(Convert.ToInt32(b.Rectangle.Width * 0.2), Convert.ToInt32(b.Rectangle.Height * 0.2));
if (!bZone.Contains(Convert.ToInt32(page_w * blob_zonex), Convert.ToInt32(page_h * blob_zoney)))
{
//skip Zone Not in center
if (debug)
{
Console.WriteLine("Blob " + i + ": Check 2 - Zone of blob Failed! (Not in the zone requested! blob zone:" + b.Rectangle.ToString() + " and requested point is at x=" + Convert.ToInt32(page_w * blob_zonex) + ",y=" + Convert.ToInt32(page_h * blob_zonex) + " ) Blob Skipped!");
}
i++; continue;
}
if (debug)
{
Console.WriteLine("Blob " + i + ": Check 2 - Zone of blob contains " + Convert.ToInt32(page_w * blob_zonex) + "," + Convert.ToInt32(page_h * blob_zonex) + "... Ok!");
}
}
//check shape
List <IntPoint> edgePoints = bc.GetBlobsEdgePoints(b);
List <IntPoint> corners;
SimpleShapeChecker shapeChecker = new SimpleShapeChecker();
if (shapeChecker.IsQuadrilateral(edgePoints, out corners))
{
if (!blob_noshape)
{
PolygonSubType subType = shapeChecker.CheckPolygonSubType(corners);
if (!subType.Equals(PolygonSubType.Square))
{
//skip Not a square
if (debug)
{
Console.WriteLine("Blob " + i + ": Check 3 - Shape is Square Failed! (Shape is not Square! " + subType.ToString() + " detected!) Blob Skipped!");
Console.WriteLine("You can disable this check with -bnoshape parameter.");
}
i++; continue;
}
else if (debug)
{
Console.WriteLine("Blob " + i + ": Check 3 - Shape is Square Ok!");
}
}
else if (debug)
{
Console.WriteLine("Blob " + i + ": Check 3 - Shape is Square skipped by option -bnoshape ");
}
}
else
{
shapeChecker.ToString();
//skip Not a quadrilateral
if (debug)
{
Console.WriteLine("Blob " + i + ": Check 3 - Shape is Square... Failed! (not a Quadrilateral! ConvexPolygon:" + shapeChecker.IsConvexPolygon(edgePoints, out corners) + " Triangle:" + shapeChecker.IsTriangle(edgePoints, out corners) + ") Blob Skipped!");
}
i++; continue;
}
//if (debug){ Console.WriteLine("Blob " + i + ": Trying to decode..."); }
//Calculate rotation angle 0 bottom left , 1 top left , 2 top right, 3 bottom right
double dx = corners[2].X - corners[1].X;
double dy = corners[1].Y - corners[2].Y;
double ang = Math.Atan2(dx, dy) * (180 / Math.PI);
if (ang > 90)
{
ang = ang - 90;
}
else
{
ang = 90 - ang;
}
//Extract Blob
Rectangle cropRect = b.Rectangle;
cropRect.Inflate(Convert.ToInt32(b.Rectangle.Width * 0.1), Convert.ToInt32(b.Rectangle.Height * 0.1));
Crop filter_blob = new Crop(cropRect);
Bitmap tmp_img_blob = filter_blob.Apply(tmp_img);
//Rotate
if (!blob_notrotate)
{
RotateBilinear filterRotate = new RotateBilinear(ang, true);
tmp_img_blob = filterRotate.Apply(tmp_img_blob);
//Togli margine esterno (bande nere derivanti dalla rotazione)
Rectangle cropRectInterno = new Rectangle(0, 0, tmp_img_blob.Width, tmp_img_blob.Height);
cropRectInterno.Inflate(-Convert.ToInt32(b.Rectangle.Width * 0.05), -Convert.ToInt32(b.Rectangle.Height * 0.05));
Crop filterCropInterno = new Crop(cropRectInterno);
tmp_img_blob = filterCropInterno.Apply(tmp_img_blob);
if (debug)
{
Console.WriteLine("Blob " + i + ": Rotated and aligned! (angle:" + ang + ")");
}
}
else
{
if (debug)
{
Console.WriteLine("Blob " + i + ": Rotation skipped by option -bnotrotate (angle:" + ang + ")");
}
}
//Applica filtri
var filter1 = new Median();
filter1.ApplyInPlace(tmp_img_blob);
var filter2 = new OtsuThreshold();
filter2.ApplyInPlace(tmp_img_blob);
//Decodifica
if (debug)
{
Console.WriteLine("Blob " + i + ": Extracted! Trying to decode...");
}
BarcodeReader reader = new BarcodeReader {
AutoRotate = true
};
Result result = reader.Decode(tmp_img_blob);
//Output Results
if (result != null)
{
if (emulate)
{
stopWatch.Stop(); Console.WriteLine("Success in " + stopWatch.Elapsed);
}
else
{
Console.WriteLine(result.Text);
}
Environment.Exit(0);
}
else if (debug)
{
Console.WriteLine("Blob " + i + ": Decode failed! (Result null)");
}
}
}
else
{
BarcodeReader reader = new BarcodeReader {
AutoRotate = true
};
Result result = reader.Decode(tmp_img);
//Output Results
if (result != null)
{
if (emulate)
{
stopWatch.Stop(); Console.WriteLine(stopWatch.Elapsed);
}
else
{
Console.WriteLine(result.Text); Environment.Exit(0);
}
}
else if (debug)
{
Console.WriteLine("Decode failed! (Result null)");
}
}
//Exit
if (emulate && stopWatch.IsRunning)
{
stopWatch.Stop(); Console.WriteLine("Failure in " + stopWatch.Elapsed);
}
Environment.Exit(0);
}
catch (Exception ex)
{
Console.WriteLine("Fatal Error: " + ex.Message + "\n" + ex.InnerException);
}
}
/// <summary>
/// Process new video frame.
/// </summary>
///
/// <param name="videoFrame">Video frame to process (detect motion in).</param>
///
/// <remarks><para>Processes new frame from video source and detects motion in it.</para>
///
/// <para>Check <see cref="MotionLevel"/> property to get information about amount of motion
/// (changes) in the processed frame.</para>
/// </remarks>
///
public unsafe void ProcessFrame(UnmanagedImage videoFrame)
{
lock (sync)
{
// check background frame
if (backgroundFrame == null)
{
lastTimeMeasurment = DateTime.Now;
// save image dimension
width = videoFrame.Width;
height = videoFrame.Height;
// alocate memory for previous and current frames
backgroundFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
motionFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
frameSize = motionFrame.Stride * height;
// temporary buffer
if (suppressNoise)
{
tempFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
}
// convert source frame to grayscale
Tools.ConvertToGrayscale(videoFrame, backgroundFrame);
return;
}
// check image dimension
if ((videoFrame.Width != width) || (videoFrame.Height != height))
{
return;
}
// convert current image to grayscale
Tools.ConvertToGrayscale(videoFrame, motionFrame);
// pointers to background and current frames
byte *backFrame;
byte *currFrame;
int diff;
// update background frame
if (millisecondsPerBackgroundUpdate == 0)
{
// update background frame using frame counter as a base
if (++framesCounter == framesPerBackgroundUpdate)
{
framesCounter = 0;
backFrame = (byte *)backgroundFrame.ImageData.ToPointer();
currFrame = (byte *)motionFrame.ImageData.ToPointer();
for (var i = 0; i < frameSize; i++, backFrame++, currFrame++)
{
diff = *currFrame - *backFrame;
if (diff > 0)
{
(*backFrame)++;
}
else if (diff < 0)
{
(*backFrame)--;
}
}
}
}
else
{
// update background frame using timer as a base
// get current time and calculate difference
var currentTime = DateTime.Now;
var timeDff = currentTime - lastTimeMeasurment;
// save current time as the last measurment
lastTimeMeasurment = currentTime;
var millisonds = (int)timeDff.TotalMilliseconds + millisecondsLeftUnprocessed;
// save remainder so it could be taken into account in the future
millisecondsLeftUnprocessed = millisonds % millisecondsPerBackgroundUpdate;
// get amount for background update
var updateAmount = millisonds / millisecondsPerBackgroundUpdate;
backFrame = (byte *)backgroundFrame.ImageData.ToPointer();
currFrame = (byte *)motionFrame.ImageData.ToPointer();
for (var i = 0; i < frameSize; i++, backFrame++, currFrame++)
{
diff = *currFrame - *backFrame;
if (diff > 0)
{
(*backFrame) += (byte)((diff < updateAmount) ? diff : updateAmount);
}
else if (diff < 0)
{
(*backFrame) += (byte)((-diff < updateAmount) ? diff : -updateAmount);
}
}
}
backFrame = (byte *)backgroundFrame.ImageData.ToPointer();
currFrame = (byte *)motionFrame.ImageData.ToPointer();
// 1 - get difference between frames
// 2 - threshold the difference
for (var i = 0; i < frameSize; i++, backFrame++, currFrame++)
{
// difference
diff = *currFrame - *backFrame;
// treshold
*currFrame = ((diff >= differenceThreshold) || (diff <= differenceThresholdNeg)) ? 255 : 0;
}
if (suppressNoise)
{
// suppress noise and calculate motion amount
AForge.SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, frameSize);
erosionFilter.Apply(tempFrame, motionFrame);
if (keepObjectEdges)
{
AForge.SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, frameSize);
dilatationFilter.Apply(tempFrame, motionFrame);
}
}
// calculate amount of motion pixels
pixelsChanged = 0;
var motion = (byte *)motionFrame.ImageData.ToPointer();
for (var i = 0; i < frameSize; i++, motion++)
{
pixelsChanged += (*motion & 1);
}
}
}
/// <summary>
/// Process new video frame.
/// </summary>
///
/// <param name="videoFrame">Video frame to process (detect motion in).</param>
///
/// <remarks><para>Processes new frame from video source and detects motion in it.</para>
///
/// <para>Check <see cref="MotionLevel"/> property to get information about amount of motion
/// (changes) in the processed frame.</para>
/// </remarks>
///
public unsafe void ProcessFrame(UnmanagedImage videoFrame)
{
lock ( sync )
{
// check background frame
if (backgroundFrame == null)
{
// save image dimension
width = videoFrame.Width;
height = videoFrame.Height;
// alocate memory for background frame
backgroundFrame = UnmanagedImage.Create(width, height, videoFrame.PixelFormat);
frameSize = backgroundFrame.Stride * height;
// convert source frame to grayscale
videoFrame.Copy(backgroundFrame);
return;
}
// check image dimension
if ((videoFrame.Width != width) || (videoFrame.Height != height))
{
return;
}
// check motion frame
if (motionFrame == null)
{
motionFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
motionSize = motionFrame.Stride * height;
// temporary buffer
if (suppressNoise)
{
tempFrame = UnmanagedImage.Create(width, height, PixelFormat.Format8bppIndexed);
}
}
// pointers to background and current frames
byte *backFrame;
byte *currFrame;
int diff;
backFrame = (byte *)backgroundFrame.ImageData.ToPointer( );
currFrame = (byte *)videoFrame.ImageData.ToPointer( );
byte *motion = (byte *)motionFrame.ImageData.ToPointer( );
byte *currFrameLocal;
byte *backFrameLocal;
byte *motionLocal;
int bytesPerPixel = Tools.BytesPerPixel(videoFrame.PixelFormat);
// 1 - get difference between frames
// 2 - threshold the difference (accumulated over every channels)
for (int i = 0; i < height; i++)
{
currFrameLocal = currFrame;
backFrameLocal = backFrame;
motionLocal = motion;
for (int j = 0; j < width; j++)
{
diff = 0;
for (int nbBytes = 0; nbBytes < bytesPerPixel; nbBytes++)
{
// difference
diff += Math.Abs((int)*currFrameLocal - (int)*backFrameLocal);
currFrameLocal++;
backFrameLocal++;
}
diff /= bytesPerPixel;
// threshold
*motionLocal = (diff >= differenceThreshold) ? (byte)255 : (byte)0;
motionLocal++;
}
currFrame += videoFrame.Stride;
backFrame += backgroundFrame.Stride;
motion += motionFrame.Stride;
}
if (suppressNoise)
{
// suppress noise and calculate motion amount
AForge.SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, motionSize);
erosionFilter.Apply(tempFrame, motionFrame);
if (keepObjectEdges)
{
AForge.SystemTools.CopyUnmanagedMemory(tempFrame.ImageData, motionFrame.ImageData, motionSize);
dilatationFilter.Apply(tempFrame, motionFrame);
}
}
// calculate amount of motion pixels
pixelsChanged = 0;
motion = (byte *)motionFrame.ImageData.ToPointer( );
for (int i = 0; i < motionSize; i++, motion++)
{
pixelsChanged += (*motion & 1);
}
}
}
private void Detection()
{
var watch = System.Diagnostics.Stopwatch.StartNew();
if (Video.Image != null)
{
if (ModeList.selectedIndex == 0)
{
training = 1;
int prev = AlphabetList.selectedIndex;
if (AlphabetList.selectedIndex == 26 || prev == 26)
{
label = 67;
}
else if (AlphabetList.selectedIndex == -1)
{
label = prev;
}
else
{
label = AlphabetList.selectedIndex;
}
}
else
{
training = 0;
}
ProgressBar.Visible = true;
ProgressBar.Value = 0;
ProgressBar.Maximum_Value = 9;
ProgressBar.Value += 1;
CapturedBox.Image = (Bitmap)Video.Image.Clone();
Bitmap src = new Bitmap(CapturedBox.Image);
//skin detection
var image = new Rectangle(0, 0, src.Width, src.Height);
var value = src.LockBits(image, ImageLockMode.ReadWrite, src.PixelFormat);
var size = Bitmap.GetPixelFormatSize(value.PixelFormat) / 8;
var buffer = new byte[value.Width * value.Height * size];
Marshal.Copy(value.Scan0, buffer, 0, buffer.Length);
System.Threading.Tasks.Parallel.Invoke(
() =>
{
Skin_process(buffer, 0, 0, value.Width / 2, value.Height / 2, value.Width, size);
},
() =>
{
Skin_process(buffer, 0, value.Height / 2, value.Width / 2, value.Height, value.Width, size);
},
() =>
{
Skin_process(buffer, value.Width / 2, 0, value.Width, value.Height / 2, value.Width, size);
},
() =>
{
Skin_process(buffer, value.Width / 2, value.Height / 2, value.Width, value.Height, value.Width, size);
}
);
Marshal.Copy(buffer, 0, value.Scan0, buffer.Length);
src.UnlockBits(value);
SkinBox.Image = src;
if (Skin == 1)
{
ProgressBar.Value += 1;
//Dilation & Erosion
src = Grayscale.CommonAlgorithms.BT709.Apply(src);
BinaryDilation3x3 dilatation = new BinaryDilation3x3();
BinaryErosion3x3 erosion = new BinaryErosion3x3();
for (int a = 1; a <= 10; a++)
{
src = dilatation.Apply(src);
}
for (int a = 1; a <= 10; a++)
{
src = erosion.Apply(src);
}
ProgressBar.Value += 1;
NoiseBox.Image = src;
//Blob
try
{
ExtractBiggestBlob blob = new ExtractBiggestBlob();
src = blob.Apply(src);
x = blob.BlobPosition.X;
y = blob.BlobPosition.Y;
ProgressBar.Value += 1;
}
catch
{
this.Show();
//MessageBox.Show("Lightning conditions are not good for detecting the gestures", "Bad Lights", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
//Merge
Bitmap srcImage = new Bitmap(CapturedBox.Image);
Bitmap dstImage = new Bitmap(src);
var srcrect = new Rectangle(0, 0, srcImage.Width, srcImage.Height);
var dstrect = new Rectangle(0, 0, dstImage.Width, dstImage.Height);
var srcdata = srcImage.LockBits(srcrect, ImageLockMode.ReadWrite, srcImage.PixelFormat);
var dstdata = dstImage.LockBits(dstrect, ImageLockMode.ReadWrite, dstImage.PixelFormat);
var srcdepth = Bitmap.GetPixelFormatSize(srcdata.PixelFormat) / 8;
var dstdepth = Bitmap.GetPixelFormatSize(dstdata.PixelFormat) / 8;
//bytes per pixel
var srcbuffer = new byte[srcdata.Width * srcdata.Height * srcdepth];
var dstbuffer = new byte[dstdata.Width * dstdata.Height * dstdepth];
//copy pixels to buffer
Marshal.Copy(srcdata.Scan0, srcbuffer, 0, srcbuffer.Length);
Marshal.Copy(dstdata.Scan0, dstbuffer, 0, dstbuffer.Length);
System.Threading.Tasks.Parallel.Invoke(
() =>
{
//upper-left
Merge_process(srcbuffer, dstbuffer, x, 0, y, 0, x + (dstdata.Width / 2), dstdata.Width / 2, y + (dstdata.Height / 2), dstdata.Height / 2, srcdata.Width, dstdata.Width, srcdepth, dstdepth);
},
() =>
{
//upper-right
Merge_process(srcbuffer, dstbuffer, x + (dstdata.Width / 2), dstdata.Width / 2, y, 0, x + (dstdata.Width), dstdata.Width, y + (dstdata.Height / 2), dstdata.Height / 2, srcdata.Width, dstdata.Width, srcdepth, dstdepth);
},
() =>
{
//lower-left
Merge_process(srcbuffer, dstbuffer, x, 0, y + (dstdata.Height / 2), dstdata.Height / 2, x + (dstdata.Width / 2), dstdata.Width / 2, y + (dstdata.Height), dstdata.Height, srcdata.Width, dstdata.Width, srcdepth, dstdepth);
},
() =>
{
//lower-right
Merge_process(srcbuffer, dstbuffer, x + (dstdata.Width / 2), dstdata.Width / 2, y + (dstdata.Height / 2), dstdata.Height / 2, x + (dstdata.Width), dstdata.Width, y + (dstdata.Height), dstdata.Height, srcdata.Width, dstdata.Width, srcdepth, dstdepth);
}
);
//Copy the buffer back to image
Marshal.Copy(srcbuffer, 0, srcdata.Scan0, srcbuffer.Length);
Marshal.Copy(dstbuffer, 0, dstdata.Scan0, dstbuffer.Length);
srcImage.UnlockBits(srcdata);
dstImage.UnlockBits(dstdata);
src = dstImage;
ProgressBar.Value += 1;
CropBox.Image = src;
//Resize
ResizeBilinear resize = new ResizeBilinear(200, 200);
src = resize.Apply(src);
ProgressBar.Value += 1;
//Edges
src = Grayscale.CommonAlgorithms.BT709.Apply((Bitmap)src);
SobelEdgeDetector edges = new SobelEdgeDetector();
src = edges.Apply(src);
ProgressBar.Value += 1;
EdgeDetectorBox.Image = src;
//HOEF
Bitmap block = new Bitmap(src);
int[] edgescount = new int[50];
double[] norm = new double[200];
String text = null;
int sum = 0;
int z = 1;
for (int p = 1; p <= 6; p++)
{
for (int q = 1; q <= 6; q++)
{
for (int x = (p - 1) * block.Width / 6; x < (p * block.Width / 6); x++)
{
for (int y = (q - 1) * block.Height / 6; y < (q * block.Height / 6); y++)
{
Color colorPixel = block.GetPixel(x, y);
int r = colorPixel.R;
int g = colorPixel.G;
int b = colorPixel.B;
if (r != 0 & g != 0 & b != 0)
{
edgescount[z]++;
}
}
}
z++;
}
}
for (z = 1; z <= 36; z++)
{
sum = sum + edgescount[z];
}
for (z = 1; z <= 36; z++)
{
norm[z] = (double)edgescount[z] / sum;
text = text + " " + z.ToString() + ":" + norm[z].ToString();
}
if (training == 1)
{
File.AppendAllText(@"D:\train.txt", label.ToString() + text + Environment.NewLine);
ProgressBar.Value += 1;
}
else
{
File.WriteAllText(@"D:\test.txt", label.ToString() + text + Environment.NewLine);
ProgressBar.Value += 1;
//SVM
Problem train = Problem.Read(@"D:\train.txt");
Problem test = Problem.Read(@"D:\test.txt");
Parameter parameter = new Parameter()
{
C = 32,
Gamma = 8
};
Model model = Training.Train(train, parameter);
Prediction.Predict(test, @"D:\result.txt", model, false);
int value1 = Convert.ToInt32(File.ReadAllText(@"D:\result.txt"));
String alphabet = null;
if (value1 == 27)
{
alphabet += "Welcome ";
}
else if (value1 == 28)
{
alphabet += "Good Morning";
}
else if (value1 == 29)
{
alphabet += "Thank You";
}
else
{
alphabet += (char)(65 + value1);
}
OutputText.Text = alphabet;
SpeechSynthesizer speechSynthesizer = new SpeechSynthesizer();
speechSynthesizer.SetOutputToDefaultAudioDevice();
speechSynthesizer.Volume = 100;
speechSynthesizer.Rate = -2;
speechSynthesizer.SelectVoiceByHints(VoiceGender.Female, VoiceAge.Child);
speechSynthesizer.SpeakAsync(alphabet);
if (alphabet == " ")
{
speechSynthesizer.SpeakAsync(OutputText.Text);
}
ProgressBar.Value += 1;
}
}
else
{
this.Show();
}
watch.Stop();
var time = (watch.ElapsedMilliseconds);
float secs = (float)time / 1000;
ExecutionTimeBox.Text = Convert.ToString(secs) + " " + "Seconds";
}
}
/// <summary>
/// Process new video frame.
/// </summary>
///
/// <param name="videoFrame">Video frame to process (detect motion in).</param>
///
/// <remarks><para>Processes new frame from video source and detects motion in it.</para>
///
/// <para>Check <see cref="MotionLevel"/> property to get information about amount of motion
/// (changes) in the processed frame.</para>
/// </remarks>
///
public unsafe void ProcessFrame(UnmanagedImage videoFrame)
{
lock ( _sync )
{
// check previous frame
if (_previousFrame == null)
{
// save image dimension
_width = videoFrame.Width;
_height = videoFrame.Height;
// alocate memory for previous and current frames
_previousFrame = UnmanagedImage.Create(_width, _height, PixelFormat.Format8bppIndexed);
_motionFrame = UnmanagedImage.Create(_width, _height, PixelFormat.Format8bppIndexed);
_frameSize = _motionFrame.Stride * _height;
// temporary buffer
if (_suppressNoise)
{
_tempFrame = UnmanagedImage.Create(_width, _height, PixelFormat.Format8bppIndexed);
}
// convert source frame to grayscale
Tools.ConvertToGrayscale(videoFrame, _previousFrame);
return;
}
// check image dimension
if ((videoFrame.Width != _width) || (videoFrame.Height != _height))
{
return;
}
// convert current image to grayscale
Tools.ConvertToGrayscale(videoFrame, _motionFrame);
UInt64 *prevFrame = (UInt64 *)_previousFrame.ImageData.ToPointer();
UInt64 *currFrame = (UInt64 *)_motionFrame.ImageData.ToPointer();
// difference value
// 1 - get difference between frames
// 2 - threshold the difference
// 3 - copy current frame to previous frame
for (int i = 0; i < _frameSize / sizeof(UInt64); i++, prevFrame++, currFrame++)
{
// difference
var diff = (*currFrame ^ *prevFrame) & _differenceThresholMask;
// copy current frame to previous
*prevFrame = *currFrame;
// treshold
*currFrame = 0;
if ((diff & 0xFF00000000000000) != 0) // take care of the 1st byte
{
*currFrame |= 0xFF00000000000000;
}
if ((diff & 0x00FF000000000000) != 0) // take care of the 2nd byte
{
*currFrame |= 0x00FF000000000000;
}
if ((diff & 0x0000FF0000000000) != 0) // take care of the 3rd byte
{
*currFrame |= 0x0000FF0000000000;
}
if ((diff & 0x000000FF00000000) != 0) // take care of the 4th byte
{
*currFrame |= 0x000000FF00000000;
}
if ((diff & 0x00000000FF000000) != 0) // take care of the 5th byte
{
*currFrame |= 0x00000000FF000000;
}
if ((diff & 0x0000000000FF0000) != 0) // take care of the 6th byte
{
*currFrame |= 0x0000000000FF0000;
}
if ((diff & 0x000000000000FF00) != 0) // take care of the 7th byte
{
*currFrame |= 0x000000000000FF00;
}
if ((diff & 0x00000000000000FF) != 0) // take care of the 8th byte
{
*currFrame |= 0x00000000000000FF;
}
}
if (_suppressNoise)
{
// suppress noise and calculate motion amount
AForge.SystemTools.CopyUnmanagedMemory(_tempFrame.ImageData, _motionFrame.ImageData, _frameSize);
_erosionFilter.Apply(_tempFrame, _motionFrame);
}
// calculate amount of motion pixels
_pixelsChanged = 0;
UInt64 *motion = (UInt64 *)_motionFrame.ImageData.ToPointer();
for (int i = 0; i < _frameSize / sizeof(UInt64); i++, motion++)
{
if ((*motion & 0xFF00000000000000) != 0) // take care of the 1st byte
{
_pixelsChanged++;
}
if ((*motion & 0x00FF000000000000) != 0) // take care of the 2nd byte
{
_pixelsChanged++;
}
if ((*motion & 0x0000FF0000000000) != 0) // take care of the 3rd byte
{
_pixelsChanged++;
}
if ((*motion & 0x000000FF00000000) != 0) // take care of the 4th byte
{
_pixelsChanged++;
}
if ((*motion & 0x00000000FF000000) != 0) // take care of the 5th byte
{
_pixelsChanged++;
}
if ((*motion & 0x0000000000FF0000) != 0) // take care of the 6th byte
{
_pixelsChanged++;
}
if ((*motion & 0x000000000000FF00) != 0) // take care of the 7th byte
{
_pixelsChanged++;
}
if ((*motion & 0x00000000000000FF) != 0) // take care of the 8th byte
{
_pixelsChanged++;
}
}
}
}
