C#圖象亮度調劑的辦法。本站提示廣大學習愛好者:(C#圖象亮度調劑的辦法)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#圖象亮度調劑的辦法正文
本文實例講述了C#圖象亮度調劑的辦法。分享給年夜家供年夜家參考。詳細以下:
//界說數字圖像處置之(亮度調劑函數) private static Bitmap BrightnessP(Bitmap a, int v) { System.Drawing.Imaging.BitmapData bmpData = a.LockBits(new Rectangle(0, 0, a.Width, a.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format24bppRgb); int bytes = a.Width * a.Height * 3; IntPtr ptr = bmpData.Scan0; int stride = bmpData.Stride; unsafe { byte* p = (byte*)ptr; int temp; for (int j = 0; j < a.Height; j++) { for (int i = 0; i < a.Width * 3; i++,p++) { temp = (int)(p[0] + v); temp = (temp > 255) ? 255 : temp < 0 ? 0 : temp; p[0] = (byte)temp; } p += stride - a.Width * 3; } } a.UnlockBits(bmpData); return a; }
願望本文所述對年夜家的C#法式設計有所贊助。