public Bitmap invertImage()
{
int[,] invertedMat = new int[Mat.GetLength(0), Mat.GetLength(1)];
ImageProcessor.CopyMat(ref invertedMat, ref Mat);
for (int r = 0; r < invertedMat.GetLength(0); r++)
{
for (int c = 0; c < invertedMat.GetLength(1); c++)
{
invertedMat[r, c] = 255 - invertedMat[r, c];
}
}
Bitmap invertedImage = ImageProcessor.CopyImage(ViewedImage);
if (isColorised)
{
Mat = invertedMat;
GetViewedImage();
previewStages.Add(new PreviewState(stages, null, OriginalImage, ViewedImage, ColorisedImage, GrayscaleImage, CopyMat(), isColorised, brightness, contrast, saturation));
}
else
{
Mat = invertedMat;
GetViewedImage();
previewStages.Add(new PreviewState(stages, null, OriginalImage, ViewedImage, ColorisedImage, GrayscaleImage, CopyMat(), isColorised, brightness, contrast, saturation));
}
return(invertedImage);
}
public Bitmap updateImageBrightness(int brightness)
{
this.brightness = brightness;
double brightnessFactor = 1 + ((double)brightness / (double)100.0);
int[,] brightenedMat = new int[Mat.GetLength(0), Mat.GetLength(1)];
ImageProcessor.CopyMat(ref brightenedMat, ref Mat);
for (int r = 0; r < brightenedMat.GetLength(0); r++)
{
for (int c = 0; c < brightenedMat.GetLength(1); c++)
{
brightenedMat[r, c] = (int)Math.Min(255, brightenedMat[r, c] * brightnessFactor);
}
}
Bitmap brightenedImage = ImageProcessor.CopyImage(ViewedImage);
if (isColorised)
{
Mat = brightenedMat;
GetViewedImage();
previewStages.Add(new PreviewState(stages, null, OriginalImage, ViewedImage, ColorisedImage, GrayscaleImage, CopyMat(), isColorised, brightness, contrast, saturation));
}
else
{
Mat = brightenedMat;
GetViewedImage();
previewStages.Add(new PreviewState(stages, null, OriginalImage, ViewedImage, ColorisedImage, GrayscaleImage, CopyMat(), isColorised, brightness, contrast, saturation));
}
return(brightenedImage);
}
public static int[,] getEqualized(int[,] mat)
{
int mn = mat.GetLength(0) * mat.GetLength(1);
float[] intensityFrequencies = new float[256];
int[,] equalizedHistogram = new int[mat.GetLength(0), mat.GetLength(1)];
ImageProcessor.CopyMat(ref equalizedHistogram, ref mat);
calculateFrequencies(mn, mat, ref intensityFrequencies);
buildEqualized(intensityFrequencies, ref equalizedHistogram);
return(equalizedHistogram);
}
void copyState(int index)
{
OriginalImage = previewStages[index].OriginalImage;
ConvertToGrayscale();
ViewedImage = previewStages[index].ResultImage;
ImageProcessor.CopyMat(ref Mat, ref previewStages[index].Mat);
isColorised = previewStages[index].isColorised;
GrayscaleImage = previewStages[index].GrayImage;
ColorisedImage = previewStages[index].ColorisedImage;
brightness = previewStages[index].brightness;
contrast = previewStages[index].contrast;
}