C#圖象線性變換的辦法。本站提示廣大學習愛好者:(C#圖象線性變換的辦法)文章只能為提供參考,不一定能成為您想要的結果。以下是C#圖象線性變換的辦法正文
本文實例講述了C#圖象線性變換的辦法。分享給年夜家供年夜家參考。詳細以下:
//界說圖象線性運算函數(y=kx+v) private static Bitmap LinearOP(Bitmap a, double k, double v) { Rectangle rect = new Rectangle(0, 0, a.Width, a.Height); System.Drawing.Imaging.BitmapData srcData = a.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite, a.PixelFormat); IntPtr ptr = srcData.Scan0; int bytes = 0; bytes = srcData.Stride * a.Height; byte[] grayValues = new byte[bytes]; System.Runtime.InteropServices.Marshal.Copy(ptr, grayValues, 0, bytes); int temp = 0; for (int i = 0; i < bytes; i++) { temp = (int)(k * grayValues[i] + v + 0.5); temp = (temp > 255) ? 255 : temp < 0 ? 0 : temp; grayValues[i] = (byte)temp; } System.Runtime.InteropServices.Marshal.Copy(grayValues, 0, ptr, bytes); a.UnlockBits(srcData); return a; }
願望本文所述對年夜家的C#法式設計有所贊助。