/// <summary>
/// Iterates array and calls specified function for each pixel component.
/// </summary>
/// <param name="applyerFunction"></param>
/// <param name="outputFileName"></param>
public void PerBitApply(PerPixelApplyerFunc applyerFunction, string outputFileName, int level = 0)
{
BitmapDataExtractor bitmapDataExtractor = new BitmapDataExtractor(srcImagePath);
(int Stride, byte[] imageBytes, int Width, int Height, PixelFormat pixelFormat) = bitmapDataExtractor;
//Extract data from bitmap
int PixelComponentCount = Stride / Width;
int imageBpp = Int32.Parse(Regex.Match(pixelFormat.ToString(), @"\d+").Value);
// if Alpha value exists then we have 4 pixel components otherwise we have 3
Log.Debug($"Calculated image bpp size is {imageBpp}");
Log.Debug($"Calculated pixel compomemt max value is {Math.Pow(2, imageBpp / PixelComponentCount)}");
// Iterating imageBytes by PixelComponentSize
for (int i = 0; i < Height; i++)
{
for (int a = 0; a < Stride - PixelComponentCount; a = a + PixelComponentCount)
{
applyerFunction(ref imageBytes, i * Stride + a, PixelComponentCount, imageBpp, level);
}
}
BitmapBsSaver.Save(imageBytes, outputFileName, Width, Height, pixelFormat); // Saves bitmap with specified byte array
}
/// <summary>
/// Takes filter matrix and applies it to image bytes.
/// </summary>
/// <param name="outputFileName"></param>
/// <param name="matrix"></param>
public void ApplyConv3x3(string outputFileName, ConvMatrix matrix)
{
//if (matrix.Factor == 0) { return; }
(int Stride, byte[] imageBytes, int Width, int Height, PixelFormat pixelFormat) = new BitmapDataExtractor(filePath);
byte[] WorkBytes = new byte[Height * Stride];
// configuring blue red green color
int nPixel = 0;
for (int h = 0; h < Height - 3; h++)
{
for (int c = 0; c < Stride; c += 1)
{
// blue
nPixel = (((
(imageBytes[h * Stride + c] * matrix.TopLeft) + (imageBytes[h * Stride + c + 3] * matrix.TopMid) + (imageBytes[h * Stride + c + 6] * matrix.TopRight)
+ (imageBytes[(h + 1) * Stride + c] * matrix.MidLeft) + (imageBytes[(h + 1) * Stride + c + 3] * matrix.Pixel) + (imageBytes[(h + 1) * Stride + c + 6] * matrix.MidRight) +
(imageBytes[(h + 2) * Stride + c] * matrix.BottomLeft) + (imageBytes[(h + 2) * Stride + c + 3] * matrix.BottomMid) + (imageBytes[(h + 2) * Stride + c + 6] * matrix.BottomRight)) / matrix.Factor) + matrix.Offset);
if (nPixel < 0)
{
nPixel = 0;
}
if (nPixel > 255)
{
nPixel = 255;
}
WorkBytes[(h + 1) * Stride + c + 3] = (byte)nPixel;
// green
nPixel = (((
(imageBytes[h * Stride + c + 1] * matrix.TopLeft) + (imageBytes[h * Stride + c + 4] * matrix.TopMid) + (imageBytes[h * Stride + c + 7] * matrix.TopRight)
+ (imageBytes[(h + 1) * Stride + c + 1] * matrix.MidLeft) + (imageBytes[(h + 1) * Stride + c + 4] * matrix.Pixel) + (imageBytes[(h + 1) * Stride + c + 7] * matrix.MidRight) +
(imageBytes[(h + 2) * Stride + c + 1] * matrix.BottomLeft) + (imageBytes[(h + 2) * Stride + c + 4] * matrix.BottomMid) + (imageBytes[(h + 2) * Stride + c + 7] * matrix.BottomRight)) / matrix.Factor) + matrix.Offset);
if (nPixel < 0)
{
nPixel = 0;
}
if (nPixel > 255)
{
nPixel = 255;
}
WorkBytes[(h + 1) * Stride + c + 4] = (byte)nPixel;
// red
nPixel = (((
(imageBytes[h * Stride + c + 2] * matrix.TopLeft) + (imageBytes[h * Stride + c + 5] * matrix.TopMid) + (imageBytes[h * Stride + c + 8] * matrix.TopRight)
+ (imageBytes[(h + 1) * Stride + c + 2] * matrix.MidLeft) + (imageBytes[(h + 1) * Stride + c + 5] * matrix.Pixel) + (imageBytes[(h + 1) * Stride + c + 8] * matrix.MidRight) +
(imageBytes[(h + 2) * Stride + c + 2] * matrix.BottomLeft) + (imageBytes[(h + 2) * Stride + c + 5] * matrix.BottomMid) + (imageBytes[(h + 2) * Stride + c + 8] * matrix.BottomRight)) / matrix.Factor) + matrix.Offset);
if (nPixel < 0)
{
nPixel = 0;
}
if (nPixel > 255)
{
nPixel = 255;
}
WorkBytes[(h + 1) * Stride + c + 5] = (byte)nPixel;
}
}
BitmapBsSaver.Save(WorkBytes, outputFileName, Width, Height, pixelFormat);
}
