public static FilteredImage GetNormalizedGrayscaleFilteredImage(Bitmap bitmap)
{
using (Bitmap bmp = new Bitmap(bitmap))
{
int height = bitmap.Height;
FilteredImageChannel[] channels = new FilteredImageChannel[1];
double[,] channel = new double[height, height];
for (int i = 0; i < bitmap.Height; i++)
{
for (int j = 0; j < bitmap.Height; j++)
{
Color color = bitmap.GetPixel(j, i);
//redChannel[i, j] = color.R / 255.0;
//greenChannel[i, j] = color.G / 255.0;
//blueChannel[i, j] = color.B / 255.0;
channel[i, j] = (255 - ((color.R + color.G + color.B) / 3)) / 255.0 - 0.5;
}
}
channels[0] = new FilteredImageChannel(height, channel);
FilteredImage image = new FilteredImage(1, channels);
return(image);
}
}
//private static RGBPixel[,] GetRGBMatrix(Bitmap image)
//{
// int width = image.Width, height = image.Height;
// RGBPixel[,] result = new RGBPixel[height, width];
// for (int i = 0; i < height; i++)
// {
// for (int j = 0; j < width; j++)
// {
// Color color = image.GetPixel(j, i);
// result[i, j] = new RGBPixel(color.R, color.G, color.B);
// }
// }
// return result;
//}
//private static Bitmap ReconstructFromRGBMatrix(RGBPixel[,] imageMatrix)
//{
// int width = imageMatrix.GetLength(1), height = imageMatrix.GetLength(0);
// Bitmap image = new Bitmap(width, height);
// using (Graphics graph = Graphics.FromImage(image))
// {
// Rectangle rectangle = new Rectangle(0, 0, width, height);
// graph.FillRectangle(Brushes.White, rectangle);
// }
// for (int i = 0; i < height; i++)
// {
// for (int j = 0; j < width; j++)
// {
// image.SetPixel(j, i, Color.FromArgb((int)imageMatrix[i, j].Red, (int)imageMatrix[i, j].Green, (int)imageMatrix[i, j].Blue));
// }
// }
// return image;
//}
//public static Bitmap ReconstructFromNormalizedRGBMatrix(RGBPixel[,] imageMatrix)
//{
// return ReconstructFromRGBMatrix(DenormalizeRGBMatrix(imageMatrix));
//}
//private static RGBPixel[,] DenormalizeRGBMatrix(RGBPixel[,] imageMatrix)
//{
// for (int i = 0; i < imageMatrix.GetLength(0); i++)
// {
// for (int j = 0; j < imageMatrix.GetLength(1); j++)
// {
// imageMatrix[i, j] = DenormalizePixel(imageMatrix[i, j]);
// }
// }
// return imageMatrix;
//}
//private static double DenormalizeValue(double value)
//{
// return (int)(value * 255);
//}
//private static RGBPixel DenormalizePixel(RGBPixel pixel)
//{
// return new RGBPixel(DenormalizeValue(pixel.Red), DenormalizeValue(pixel.Green), DenormalizeValue(pixel.Blue));
//}
//private static double NormalizeValue(double value)
//{
// return value / 255.0;
//}
//private static RGBPixel NormalizePixel(RGBPixel pixel)
//{
// return new RGBPixel(NormalizeValue(pixel.Red), NormalizeValue(pixel.Green), NormalizeValue(pixel.Blue));
//}
//private static RGBPixel[,] NormalizeRGBMatrix(RGBPixel[,] imageMatrix)
//{
// for(int i = 0; i < imageMatrix.GetLength(0); i++)
// {
// for(int j = 0; j < imageMatrix.GetLength(1); j++)
// {
// imageMatrix[i, j] = NormalizePixel(imageMatrix[i,j]);
// }
// }
// return imageMatrix;
//}
//public static RGBPixel[,] GetNormalizedRGBMatrix(string path)
//{
// using (Bitmap bmp = new Bitmap(path))
// {
// return NormalizeRGBMatrix(GetRGBMatrix(bmp));
// }
//}
//public static RGBPixel[,] GetNormalizedRGBMatrix(Bitmap bitmap)
//{
// using (Bitmap bmp = new Bitmap(bitmap))
// {
// return NormalizeRGBMatrix(GetRGBMatrix(bmp));
// }
//}
public static FilteredImage GetNormalizedFilteredImage(Bitmap bitmap)
{
using (Bitmap bmp = new Bitmap(bitmap))
{
int height = bitmap.Height;
FilteredImageChannel[] channels = new FilteredImageChannel[3];
double[,] redChannel = new double[height, height];
double[,] greenChannel = new double[height, height];
double[,] blueChannel = new double[height, height];
for (int i = 0; i < bitmap.Height; i++)
{
for (int j = 0; j < bitmap.Height; j++)
{
Color color = bitmap.GetPixel(j, i);
redChannel[i, j] = (255 - color.R) / 255.0 - 0.5;
greenChannel[i, j] = (255 - color.G) / 255.0 - 0.5;
blueChannel[i, j] = (255 - color.B) / 255.0 - 0.5;
//redChannel[i, j] = (255 - color.R) / 255.0;
//greenChannel[i, j] = (255 - color.G) / 255.0;
//blueChannel[i, j] = (255 - color.B) / 255.0;
}
}
channels[0] = new FilteredImageChannel(height, redChannel);
channels[1] = new FilteredImageChannel(height, greenChannel);
channels[2] = new FilteredImageChannel(height, blueChannel);
FilteredImage image = new FilteredImage(3, channels);
return(image);
}
}
