本文实例讲述了C#图像线性变换的方法。分享给大家供大家参考。具体如下：
//定义图像线性运算函数（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; }
希望本文所述对大家的C#程序设计有所帮助。
【C#图像线性变换的方法】相关文章：