private void ConverToGray(ILockBitmap bitmap, int i, int j, IMaybe <object> value) { Color colorPixel = bitmap.GetPixel(i, j); int grayScale = (int)((colorPixel.R * 0.3) + (colorPixel.G * 0.59) + (colorPixel.B * 0.11)); bitmap.SetPixel(i, j, Color.FromArgb(grayScale, grayScale, grayScale)); }
private void AdjustContrast(ILockBitmap bitmap, int i, int j, IMaybe <double> contrast) { //if (contrast < -100) contrast = -100; //if (contrast > 100) contrast = 100; //contrast = (100.0 + contrast) / 100.0; //contrast *= contrast; Color c; c = bitmap.GetPixel(i, j); double pR = c.R / 255.0; pR -= 0.5; pR *= contrast.Value; pR += 0.5; pR *= 255; if (pR < 0) { pR = 0; } if (pR > 255) { pR = 255; } double pG = c.G / 255.0; pG -= 0.5; pG *= contrast.Value; pG += 0.5; pG *= 255; if (pG < 0) { pG = 0; } if (pG > 255) { pG = 255; } double pB = c.B / 255.0; pB -= 0.5; pB *= contrast.Value; pB += 0.5; pB *= 255; if (pB < 0) { pB = 0; } if (pB > 255) { pB = 255; } bitmap.SetPixel(i, j, Color.FromArgb((byte)pR, (byte)pG, (byte)pB)); }
private void AdjustBrightness(ILockBitmap bitmap, int i, int j, IMaybe <int> brightness) { Color c; c = bitmap.GetPixel(i, j); int cR = c.R + brightness.Value; int cG = c.G + brightness.Value; int cB = c.B + brightness.Value; if (cR < 0) { cR = 1; } if (cR > 255) { cR = 255; } if (cG < 0) { cG = 1; } if (cG > 255) { cG = 255; } if (cB < 0) { cB = 1; } if (cB > 255) { cB = 255; } bitmap.SetPixel(i, j, Color.FromArgb((byte)cR, (byte)cG, (byte)cB)); }
public void ConvertToNegative(ILockBitmap bitmap, int i, int j, IMaybe <object> value) { Color colorPixel = bitmap.GetPixel(i, j); bitmap.SetPixel(i, j, Color.FromArgb(255 - colorPixel.R, 255 - colorPixel.G, 255 - colorPixel.G)); }