[快速閱讀十一] 伊拉克團(tuán)隊(duì)的TAGC（低光增強(qiáng)效果）算法實(shí)現(xiàn)。

void IM_TAGC_Enhancement(unsigned char *Src, unsigned char *Dest, int Width, int Height, int Stride)
{
    int Channel = Stride / Width;
    float Inv255 = 1.0f / 255;
    if (Channel == 3)
    {
        for (int Y = 0; Y < Height; Y++)
        {
            unsigned char *LinePS = Src + Y * Stride;
            unsigned char *LinePD = Dest + Y * Stride;
            for (int X = 0; X < Width; X++)
            {
                float Blue = LinePS[0] * Inv255;
                float Green = LinePS[1] * Inv255;
                float Red = LinePS[2] * Inv255;
                float L = 0.2126f * Red + 0.7152 * Green + 0.0722 * Blue;
                float A = (Blue + Green + Red) / 3;
                float Gamma = 5.0f + (0.5f - L) * (1 - A) - 2 * L;
                LinePD[0] = ClampToByte((int)(powf(Blue, 2 / Gamma) * 255 + 0.4999999f));
                LinePD[1] = ClampToByte((int)(powf(Green, 2 / Gamma) * 255 + 0.4999999f));
                LinePD[2] = ClampToByte((int)(powf(Red, 2 / Gamma) * 255 + 0.4999999f));
                LinePS += 3;
                LinePD += 3;
            }
        }
    }
}