public static CaptureData ProcessFrame(CaptureCalc capCalc, CaptureData capData)
{
if (capData == null || capCalc == null)
return new CaptureData();
capCalc.CaptureC.Retrieve(capData.CapturedImage);
capCalc.ForegroundDetectorC.Apply(capData.CapturedImage, capData.ForegroundImage);
//update the motion history
capCalc.MotionHistoryC.Update(capData.ForegroundImage);
#region get a copy of the motion mask and enhance its color
double[] minValues, maxValues;
Point[] minLoc, maxLoc;
capCalc.MotionHistoryC.Mask.MinMax(out minValues, out maxValues, out minLoc, out maxLoc);
Mat motionMask = new Mat();
using (ScalarArray sa = new ScalarArray(255.0 / maxValues[0]))
CvInvoke.Multiply(capCalc.MotionHistoryC.Mask, sa, motionMask, 1, DepthType.Cv8U);
//Image<Gray, Byte> motionMask = _motionHistory.Mask.Mul(255.0 / maxValues[0]);
#endregion
//create the motion image
//Mat motionImage = new Mat(motionMask.Size.Height, motionMask.Size.Width, DepthType.Cv8U, 3);
capData.MotionImage = new Mat(motionMask.Size.Height, motionMask.Size.Width, DepthType.Cv8U, 3);
//display the motion pixels in blue (first channel)
//motionImage[0] = motionMask;
CvInvoke.InsertChannel(motionMask, capData.MotionImage, (int)Constants.ColorChannel.Blue);
//Threshold to define a motion area, reduce the value to detect smaller motion
double minArea = Constants.MIN_DECTIVED_AREA;
//storage.Clear(); //clear the storage
//Rectangle[] rects;
Mat segMask = new Mat();
using (VectorOfRect boundingRect = new VectorOfRect())
{
capCalc.MotionHistoryC.GetMotionComponents(segMask, boundingRect);
capData.CapturedMotionData.Rects = boundingRect.ToArray();
}
double[] angles = new double[capData.CapturedMotionData.Rects.Length];
double[] motionPixelArr = new double[capData.CapturedMotionData.Rects.Length];
uint index = 0;
//iterate through each of the motion component
foreach (Rectangle comp in capData.CapturedMotionData.Rects)
{
int area = comp.Width * comp.Height;
//reject the components that have small area;
if (area < minArea)
continue;
// find the angle and motion pixel count of the specific area
double angle = 0;
double motionPixelCount = 0;
capCalc.MotionHistoryC.MotionInfo(capData.ForegroundImage, comp, out angle, out motionPixelCount);
//reject the area that contains too few motion
if (motionPixelCount < area * Constants.MIN_MOTION_PIXEL_RATIO_IN_AN_AREA)
continue;
angles[index] = angle;
motionPixelArr[index] = motionPixelCount;
index++;
//Draw each individual motion in red
DrawMotion(capData.MotionImage, comp, angle, new Bgr(Color.Red));
}
// find and draw the overall motion angle
double overallAngle, overallMotionPixelCount;
capCalc.MotionHistoryC.MotionInfo(capData.ForegroundImage, new Rectangle(Point.Empty, motionMask.Size), out overallAngle, out overallMotionPixelCount);
capData.CapturedMotionData.OverallAngle = overallAngle;
capData.CapturedMotionData.OverallMotionPixelCount = overallMotionPixelCount;
capData.CapturedMotionData.Angles = angles;
capData.CapturedMotionData.MotionPixelCountArray = motionPixelArr;
DrawMotion(capData.MotionImage, new Rectangle(Point.Empty, motionMask.Size), capData.CapturedMotionData.OverallAngle, new Bgr(Color.Green));
return capData;
}
private void UpdateDestImages(CaptureData capData)
{
capturedDest.Image = capData.CapturedImage;
if(_isDebugging)
{
foregroundDest.Image = capData.ForegroundImage;
//Display the amount of motions found on the current image
UpdateText(String.Format("移动物体数： {0}; 移动像素数: {1}", capData.CapturedMotionData.Rects.Length, capData.CapturedMotionData.OverallMotionPixelCount));
//Display the image of the motion
motionDest.Image = capData.MotionImage;
}
if (this.Disposing || this.IsDisposed)
return;
}
private void UpdateOrigImages(CaptureData capData)
{
capturedOrig.Image = capData.CapturedImage;
if (_isDebugging)
{
foregroundOrig.Image = capData.ForegroundImage;
//Display the amount of motions found on the current image
//UpdateText(String.Format("Total Motions found: {0}; Motion Pixel count: {1}", capData.Rects.Length, capData.OverallMotionPixelCount));
//Display the image of the motion
motionOrig.Image = capData.MotionImage;
}
if (this.Disposing || this.IsDisposed)
return;
}
private void startButton_Click(object sender, EventArgs e)
{
_destVideoFilePath = string.Empty;
_log.Error("destVideo_Click");
if (!chkUseCamera.Checked)
{
OpenFileDialog fileDialog = new OpenFileDialog
{
Multiselect = false,
Title = "请选择文件",
Filter = "所有文件(*.*)|*.*"
};
if (fileDialog.ShowDialog() == DialogResult.OK)
{
_destVideoFilePath = fileDialog.FileName;
}
else
{
return;
}
}
_capCalcOrig = new CaptureCalc();
_capCalcDest = new CaptureCalc();
_capDataOrig = new CaptureData();
_capDataDest = new CaptureData();
_redis = ConnectionMultiplexer.Connect(_redisHost);
if (_redis == null)
return;
_db = _redis.GetDatabase();
if (_db == null)
return;
_db.StringSet(Constants.REDIS_KEY_CAPTURED_DATA, "");
_db.StringSet(Constants.REDIS_KEY_OIRG_DATA, "");
//RedisValue rv= _db.StringGet("CapturedData");
//try to create the capture
if (_capCalcDest.CaptureC == null)
{
try
{
_capCalcDest.CaptureC = !string.IsNullOrEmpty(_destVideoFilePath) ? new Capture(_destVideoFilePath) : new Capture();
}
catch (NullReferenceException ex)
{
//show errors if there is any
MessageBox.Show(ex.Message);
}
}
if (_capCalcOrig.CaptureC == null)
{
try
{
if (!string.IsNullOrEmpty(_origVideoFilePath))
_capCalcOrig.CaptureC = new Capture(_origVideoFilePath);
}
catch (NullReferenceException ex)
{
MessageBox.Show(ex.Message);
}
}
if (_capCalcDest.CaptureC != null) //if camera capture has been successfully created
{
_capCalcDest.ForegroundDetectorC = new BackgroundSubtractorMOG2();
_capCalcDest.MotionHistoryC = new MotionHistory(
1.0, //in second, the duration of motion history you wants to keep
0.05, //in second, maxDelta for cvCalcMotionGradient
0.5); //in second, minDelta for cvCalcMotionGradient
_capCalcDest.CaptureC.ImageGrabbed += ProcessCapturedFrame;
_capCalcDest.CaptureC.Start();
}
if (_capCalcOrig.CaptureC != null) //if camera capture has been successfully created
{
_capCalcOrig.ForegroundDetectorC = new BackgroundSubtractorMOG2();
_capCalcOrig.MotionHistoryC = new MotionHistory(
1.0, //in second, the duration of motion history you wants to keep
0.05, //in second, maxDelta for cvCalcMotionGradient
0.5); //in second, minDelta for cvCalcMotionGradient
_capCalcOrig.CaptureC.ImageGrabbed += ProcessComparedVideoFrame;
_capCalcOrig.CaptureC.Start();
}
}
