/// <summary> /// Color Filter /// </summary> /// <param name="sourceBitmap">Set source Bitmap</param> /// <param name="matrixSize">Set matrix size</param> /// <param name="edgeThreshold">Set edge threshold</param> /// <param name="applyBlue">Apply Blue</param> /// <param name="applyGreen">Apply Green</param> /// <param name="applyRed">Apply Red</param> /// <param name="edgeType">Set edge type</param> /// <param name="shiftType">Set shift type</param> /// <returns></returns> public static System.Drawing.Bitmap AbstractColorsFilter(this System.Drawing.Bitmap sourceBitmap, int matrixSize, byte edgeThreshold, bool applyBlue = true, bool applyGreen = true, bool applyRed = true, EdgeTracingType edgeType = EdgeTracingType.Black, ColorShiftType shiftType = ColorShiftType.None) { System.Drawing.Bitmap edgeBitmap = sourceBitmap.GradientBasedEdgeDetectionFilter(edgeThreshold); System.Drawing.Bitmap colorBitmap = sourceBitmap.AverageColoursFilter(matrixSize, applyBlue, applyGreen, applyRed, shiftType); byte[] edgeBuffer = edgeBitmap.GETByteArray(); byte[] colorBuffer = colorBitmap.GETByteArray(); byte[] resultBuffer = colorBitmap.GETByteArray(); for (int k = 0; k + 4 < edgeBuffer.Length; k += 4) { if (edgeBuffer[k] == 255) { switch (edgeType) { case EdgeTracingType.Black: resultBuffer[k] = 0; resultBuffer[k + 1] = 0; resultBuffer[k + 2] = 0; break; case EdgeTracingType.White: resultBuffer[k] = 255; resultBuffer[k + 1] = 255; resultBuffer[k + 2] = 255; break; case EdgeTracingType.HalfIntensity: resultBuffer[k] = ClipByte(resultBuffer[k] * 0.5); resultBuffer[k + 1] = ClipByte(resultBuffer[k + 1] * 0.5); resultBuffer[k + 2] = ClipByte(resultBuffer[k + 2] * 0.5); break; case EdgeTracingType.DoubleIntensity: resultBuffer[k] = ClipByte(resultBuffer[k] * 2); resultBuffer[k + 1] = ClipByte(resultBuffer[k + 1] * 2); resultBuffer[k + 2] = ClipByte(resultBuffer[k + 2] * 2); break; case EdgeTracingType.ColorInversion: resultBuffer[k] = ClipByte(255 - resultBuffer[k]); resultBuffer[k + 1] = ClipByte(255 - resultBuffer[k + 1]); resultBuffer[k + 2] = ClipByte(255 - resultBuffer[k + 2]); break; } } } System.Drawing.Bitmap resultBitmap = new System.Drawing.Bitmap(sourceBitmap.Width, sourceBitmap.Height); BitmapData resultData = resultBitmap.LockBits(new Rectangle(0, 0, resultBitmap.Width, resultBitmap.Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb); Marshal.Copy(resultBuffer, 0, resultData.Scan0, resultBuffer.Length); resultBitmap.UnlockBits(resultData); return(resultBitmap); }