public void ApplyInPlace(Bitmap bmp)
{
if (Invert)
{
Invert invertF = new Invert();
invertF.ApplyInPlace(bmp);
}
Color c = Scale(DarkestColor, BrightestColor, Brightness); ;
LevelsLinear levelsF = new LevelsLinear();
if (Invert)
{
levelsF.Input = new IntRange(0, (int)(255 * TextDarken));
}
else
{
levelsF.Input = new IntRange(255 - (int)(255 * TextDarken), 255);
}
levelsF.OutRed = new IntRange(0, c.R);
levelsF.OutGreen = new IntRange(0, c.G);
levelsF.OutBlue = new IntRange(0, c.B);
levelsF.ApplyInPlace(bmp);
}
/// <summary>
/// Linear correction in RGB colour space.
/// </summary>
/// <param name="bitmap">The bitmap.</param>
public static Bitmap Colour(this Bitmap bitmap) {
if ((bitmap = bitmap.Channel()) == null) return null;
var imageStatistics = new ImageStatistics(bitmap);
var levelsLinear = new LevelsLinear {
InRed = imageStatistics.Red.GetRange(0.995),
InGreen = imageStatistics.Green.GetRange(0.995),
InBlue = imageStatistics.Blue.GetRange(0.995)
};
levelsLinear.ApplyInPlace(bitmap);
return bitmap;
}
static void TestLevels()
{
var bmp1 = (Bitmap)Bitmap.FromFile("meta1.png");
var bmp2 = (Bitmap)Bitmap.FromFile("meta2.png");
LevelsLinear filter = new LevelsLinear();
// set ranges
filter.Input = new IntRange(150, 255);
// apply the filter
var sw = Stopwatch.StartNew();
filter.ApplyInPlace(bmp2);
sw.Stop();
var contrast = new ContrastStretch();
var bmp4 = contrast.Apply(bmp2);
var bmp3 = ImageUtil.AdjustImage(bmp2, contrast: 2f);
}
/// <summary>
/// Linear correction in RGB colour space.
/// </summary>
/// <param name="Bitmap">The bitmap.</param>
public static Bitmap Colour(this Bitmap Bitmap)
{
// Convert grayscale to RGB colour space.
if ((Bitmap = Bitmap.Channel()) != null) {
// Initialize a new instance of the LevelsLinear class.
ImageStatistics ImageStatistics = new ImageStatistics(Bitmap);
// Initialize a new instance of the LevelsLinear class.
LevelsLinear LevelsLinear = new LevelsLinear {
// Retrieve and set the range around the median for the red-channel.
InRed = ImageStatistics.Red.GetRange(0.995),
// Retrieve and set the range around the median for the green-channel.
InGreen = ImageStatistics.Green.GetRange(0.995),
// Retrieve and set the range around the median for the blue-channel.
InBlue = ImageStatistics.Blue.GetRange(0.995)
};
// Apply the filter to the image.
LevelsLinear.ApplyInPlace(Bitmap);
}
// Return the bitmap.
return Bitmap;
}
public double GetTemperature()
{
var temp = 0.0;
var image = Image.FromFile(filename);
var grayscale = new Grayscale(0.2125, 0.7154, 0.0721);
image = grayscale.Apply(image);
var invert = new Invert();
image = invert.Apply(image);
var stats = new ImageStatistics(image);
var levelsLinear = new LevelsLinear
{
InGray = stats.Gray.GetRange(2.90)
};
image = levelsLinear.Apply(image);
var contrast = new ContrastStretch();
image = contrast.Apply(image);
var erosion = new Erosion();
image = erosion.Apply(image);
var blur = new GaussianBlur(2, 3);
image = blur.Apply(image);
var threshold = new Threshold(79);
image = threshold.Apply(image);
image.Save(processedFileName, System.Drawing.Imaging.ImageFormat.Jpeg);
image.Dispose();
var text = Recognise();
double.TryParse(text.Replace(',', '.'), out temp);
return temp;
}
private void CorrectLevel(int MinLevel, int MaxLevel)
{
LevelsLinear filter = new LevelsLinear();
filter.Input = new IntRange(MinLevel, MaxLevel);
filter.ApplyInPlace(_recogimg);
}
private Bitmap filter(string ft)
{
Bitmap effect = sourceImage;
filteredImage = sourceImage;
if (ft == "none")
{
effect = sourceImage;
}
else if (ft == "grayscale")
{
effect = ApplyFilter(Grayscale.CommonAlgorithms.BT709);
}
else if (ft == "sepia")
{
effect = ApplyFilter(new Sepia());
}
else if (ft == "invert")
{
effect = ApplyFilter(new Invert());
}
else if (ft == "rotate")
{
effect = ApplyFilter(new RotateChannels());
}
else if (ft == "color")
{
effect = ApplyFilter(new ColorFiltering(new IntRange(25, 230), new IntRange(25, 230), new IntRange(25, 230)));
}
else if (ft == "hue")
{
effect = ApplyFilter(new HueModifier(50));
}
else if (ft == "saturation")
{
effect = ApplyFilter(new SaturationCorrection(0.15f));
}
else if (ft == "brightness")
{
effect = ApplyFilter(new BrightnessCorrection());
}
else if (ft == "contrast")
{
effect = ApplyFilter(new ContrastCorrection());
}
else if (ft == "hsl")
{
effect = ApplyFilter(new HSLFiltering(new IntRange(330, 30), new Range(0, 1), new Range(0, 1)));
}
else if (ft == "YCbCr")
{
YCbCrLinear f = new YCbCrLinear();
f.InCb = new Range(-0.3f, 0.3f);
effect = ApplyFilter(f);
}
else if (ft == "YCbCr")
{
effect = ApplyFilter(new YCbCrFiltering(new Range(0.2f, 0.9f), new Range(-0.3f, 0.3f), new Range(-0.3f, 0.3f)));
}
else if (ft == "threshold")
{
Bitmap originalImage = sourceImage;
// get grayscale image
sourceImage = Grayscale.CommonAlgorithms.RMY.Apply(sourceImage);
// apply threshold filter
effect = ApplyFilter(new Threshold());
// delete grayscale image and restore original
sourceImage.Dispose();
sourceImage = originalImage;
}
else if (ft == "floyd")
{
Bitmap originalImage = sourceImage;
// get grayscale image
sourceImage = Grayscale.CommonAlgorithms.RMY.Apply(sourceImage);
// apply threshold filter
effect = ApplyFilter(new FloydSteinbergDithering());
// delete grayscale image and restore original
sourceImage.Dispose();
sourceImage = originalImage;
}
else if (ft == "ordered")
{
// save original image
Bitmap originalImage = sourceImage;
// get grayscale image
sourceImage = Grayscale.CommonAlgorithms.RMY.Apply(sourceImage);
// apply threshold filter
effect = ApplyFilter(new OrderedDithering());
// delete grayscale image and restore original
sourceImage.Dispose();
sourceImage = originalImage;
}
else if (ft == "correlation")
{
effect = ApplyFilter(new Convolution(new int[,] {
{ 1, 2, 3, 2, 1 },
{ 2, 4, 5, 4, 2 },
{ 3, 5, 6, 5, 3 },
{ 2, 4, 5, 4, 2 },
{ 1, 2, 3, 2, 1 } }));
}
else if (ft == "sharpen")
{
effect = ApplyFilter(new Sharpen());
}
else if (ft == "edgedetector")
{
// save original image
Bitmap originalImage = sourceImage;
// get grayscale image
sourceImage = Grayscale.CommonAlgorithms.RMY.Apply(sourceImage);
// apply edge filter
effect = ApplyFilter(new DifferenceEdgeDetector());
// delete grayscale image and restore original
sourceImage.Dispose();
sourceImage = originalImage;
}
else if (ft == "homogenity")
{
// save original image
Bitmap originalImage = sourceImage;
// get grayscale image
sourceImage = Grayscale.CommonAlgorithms.RMY.Apply(sourceImage);
// apply edge filter
effect = ApplyFilter(new HomogenityEdgeDetector());
// delete grayscale image and restore original
sourceImage.Dispose();
sourceImage = originalImage;
}
else if (ft == "sobel")
{
// save original image
Bitmap originalImage = sourceImage;
// get grayscale image
sourceImage = Grayscale.CommonAlgorithms.RMY.Apply(sourceImage);
// apply edge filter
effect = ApplyFilter(new SobelEdgeDetector());
// delete grayscale image and restore original
sourceImage.Dispose();
sourceImage = originalImage;
}
else if (ft == "rgbLinear")
{
LevelsLinear f = new LevelsLinear();
f.InRed = new IntRange(30, 230);
f.InGreen = new IntRange(50, 240);
f.InBlue = new IntRange(10, 210);
effect = ApplyFilter(f);
}
else if (ft == "jitter")
{
effect = ApplyFilter(new Jitter());
}
else if (ft == "oilpainting")
{
effect = ApplyFilter(new OilPainting());
}
else if (ft == "gaussinblur")
{
effect = ApplyFilter(new GaussianBlur(2.0, 7));
}
else if (ft == "texture")
{
effect = ApplyFilter(new Texturer(new TextileTexture(), 1.0, 0.8));
}
return effect;
}
// On Filters->Levels Linear Correction
private void rgbLinearFiltersItem_Click( object sender, System.EventArgs e )
{
LevelsLinear filter = new LevelsLinear( );
filter.InRed = new IntRange( 30, 230 );
filter.InGreen = new IntRange( 50, 240 );
filter.InBlue = new IntRange( 10, 210 );
ApplyFilter( filter );
rgbLinearFiltersItem.Checked = true;
}
/// <summary>
/// Process the filter on the specified image.
/// </summary>
///
/// <param name="image">Source image data.</param>
/// <param name="rect">Image rectangle for processing by the filter.</param>
///
protected override unsafe void ProcessFilter( UnmanagedImage image, Rectangle rect )
{
int pixelSize = Image.GetPixelFormatSize( image.PixelFormat ) / 8;
int startX = rect.Left;
int startY = rect.Top;
int stopX = startX + rect.Width;
int stopY = startY + rect.Height;
int stride = image.Stride;
int offset = stride - rect.Width * pixelSize;
// levels linear correction filter is going to be used on STEP 2
LevelsLinear levelsLinear = new LevelsLinear( );
// STEP 1 - search for min and max pixel values
byte* ptr = (byte*) image.ImageData.ToPointer( );
// check image format
if ( image.PixelFormat == PixelFormat.Format8bppIndexed )
{
// allign pointer to the first pixel to process
ptr += ( startY * stride + startX );
byte min = 255;
byte max = 0;
for ( int y = startY; y < stopY; y++ )
{
for ( int x = startX; x < stopX; x++, ptr++ )
{
byte value = *ptr;
if ( value < min )
min = value;
if ( value > max )
max = value;
}
ptr += offset;
}
levelsLinear.InGray = new IntRange( min, max );
}
else
{
// allign pointer to the first pixel to process
ptr += ( startY * stride + startX * pixelSize );
byte minR = 255, minG = 255, minB = 255;
byte maxR = 0, maxG = 0, maxB = 0;
for ( int y = startY; y < stopY; y++ )
{
for ( int x = startX; x < stopX; x++, ptr += pixelSize )
{
// red
byte value = ptr[RGB.R];
if ( value < minR )
minR = value;
if ( value > maxR )
maxR = value;
// green
value = ptr[RGB.G];
if ( value < minG )
minG = value;
if ( value > maxG )
maxG = value;
// blue
value = ptr[RGB.B];
if ( value < minB )
minB = value;
if ( value > maxB )
maxB = value;
}
ptr += offset;
}
levelsLinear.InRed = new IntRange( minR, maxR );
levelsLinear.InGreen = new IntRange( minG, maxG );
levelsLinear.InBlue = new IntRange( minB, maxB );
}
// STEP 2 - run levels linear correction
levelsLinear.ApplyInPlace( image, rect );
}
/// <summary>
/// Process the filter on the specified image.
/// </summary>
///
/// <param name="image">Source image data.</param>
/// <param name="rect">Image rectangle for processing by the filter.</param>
///
protected override unsafe void ProcessFilter(UnmanagedImage image, Rectangle rect)
{
int pixelSize = Image.GetPixelFormatSize(image.PixelFormat) / 8;
int startX = rect.Left;
int startY = rect.Top;
int stopX = startX + rect.Width;
int stopY = startY + rect.Height;
int stride = image.Stride;
int offset = stride - rect.Width * pixelSize;
// levels linear correction filter is going to be used on STEP 2
LevelsLinear levelsLinear = new LevelsLinear( );
// STEP 1 - search for min and max pixel values
byte *ptr = (byte *)image.ImageData.ToPointer( );
// check image format
if (image.PixelFormat == PixelFormat.Format8bppIndexed)
{
// allign pointer to the first pixel to process
ptr += (startY * stride + startX);
byte min = 255;
byte max = 0;
for (int y = startY; y < stopY; y++)
{
for (int x = startX; x < stopX; x++, ptr++)
{
byte value = *ptr;
if (value < min)
{
min = value;
}
if (value > max)
{
max = value;
}
}
ptr += offset;
}
levelsLinear.InGray = new IntRange(min, max);
}
else
{
// allign pointer to the first pixel to process
ptr += (startY * stride + startX * pixelSize);
byte minR = 255, minG = 255, minB = 255;
byte maxR = 0, maxG = 0, maxB = 0;
for (int y = startY; y < stopY; y++)
{
for (int x = startX; x < stopX; x++, ptr += pixelSize)
{
// red
byte value = ptr[RGB.R];
if (value < minR)
{
minR = value;
}
if (value > maxR)
{
maxR = value;
}
// green
value = ptr[RGB.G];
if (value < minG)
{
minG = value;
}
if (value > maxG)
{
maxG = value;
}
// blue
value = ptr[RGB.B];
if (value < minB)
{
minB = value;
}
if (value > maxB)
{
maxB = value;
}
}
ptr += offset;
}
levelsLinear.InRed = new IntRange(minR, maxR);
levelsLinear.InGreen = new IntRange(minG, maxG);
levelsLinear.InBlue = new IntRange(minB, maxB);
}
// STEP 2 - run levels linear correction
levelsLinear.ApplyInPlace(image, rect);
}
protected unsafe override void ProcessFilter(UnmanagedImage image, Rectangle rect)
{
int num = System.Drawing.Image.GetPixelFormatSize(image.PixelFormat) / 8;
int left = rect.Left;
int top = rect.Top;
int num2 = left + rect.Width;
int num3 = top + rect.Height;
int stride = image.Stride;
int num4 = stride - rect.Width * num;
LevelsLinear levelsLinear = new LevelsLinear();
byte * ptr = (byte *)image.ImageData.ToPointer();
if (image.PixelFormat == PixelFormat.Format8bppIndexed)
{
ptr += top * stride + left;
byte b = byte.MaxValue;
byte b2 = 0;
for (int i = top; i < num3; i++)
{
int num5 = left;
while (num5 < num2)
{
byte b3 = *ptr;
if (b3 < b)
{
b = b3;
}
if (b3 > b2)
{
b2 = b3;
}
num5++;
ptr++;
}
ptr += num4;
}
levelsLinear.InGray = new IntRange(b, b2);
}
else
{
ptr += top * stride + left * num;
byte b4 = byte.MaxValue;
byte b5 = byte.MaxValue;
byte b6 = byte.MaxValue;
byte b7 = 0;
byte b8 = 0;
byte b9 = 0;
for (int j = top; j < num3; j++)
{
int num6 = left;
while (num6 < num2)
{
byte b10 = ptr[2];
if (b10 < b4)
{
b4 = b10;
}
if (b10 > b7)
{
b7 = b10;
}
b10 = ptr[1];
if (b10 < b5)
{
b5 = b10;
}
if (b10 > b8)
{
b8 = b10;
}
b10 = *ptr;
if (b10 < b6)
{
b6 = b10;
}
if (b10 > b9)
{
b9 = b10;
}
num6++;
ptr += num;
}
ptr += num4;
}
levelsLinear.InRed = new IntRange(b4, b7);
levelsLinear.InGreen = new IntRange(b5, b8);
levelsLinear.InBlue = new IntRange(b6, b9);
}
levelsLinear.ApplyInPlace(image, rect);
}
protected override unsafe void ProcessFilter(UnmanagedImage image, Rectangle rect)
{
int num = Image.GetPixelFormatSize(image.PixelFormat) / 8;
int left = rect.Left;
int top = rect.Top;
int num4 = left + rect.Width;
int num5 = top + rect.Height;
int stride = image.Stride;
int num7 = stride - (rect.Width * num);
LevelsLinear linear = new LevelsLinear();
byte * numPtr = (byte *)image.ImageData.ToPointer();
if (image.PixelFormat == PixelFormat.Format8bppIndexed)
{
numPtr += (top * stride) + left;
byte min = 0xff;
byte max = 0;
for (int i = top; i < num5; i++)
{
int num11 = left;
while (num11 < num4)
{
byte num12 = numPtr[0];
if (num12 < min)
{
min = num12;
}
if (num12 > max)
{
max = num12;
}
num11++;
numPtr++;
}
numPtr += num7;
}
linear.InGray = new IntRange(min, max);
}
else
{
numPtr += (top * stride) + (left * num);
byte num13 = 0xff;
byte num14 = 0xff;
byte num15 = 0xff;
byte num16 = 0;
byte num17 = 0;
byte num18 = 0;
for (int j = top; j < num5; j++)
{
int num20 = left;
while (num20 < num4)
{
byte num21 = numPtr[2];
if (num21 < num13)
{
num13 = num21;
}
if (num21 > num16)
{
num16 = num21;
}
num21 = numPtr[1];
if (num21 < num14)
{
num14 = num21;
}
if (num21 > num17)
{
num17 = num21;
}
num21 = numPtr[0];
if (num21 < num15)
{
num15 = num21;
}
if (num21 > num18)
{
num18 = num21;
}
num20++;
numPtr += num;
}
numPtr += num7;
}
linear.InRed = new IntRange(num13, num16);
linear.InGreen = new IntRange(num14, num17);
linear.InBlue = new IntRange(num15, num18);
}
linear.ApplyInPlace(image, rect);
}
