1、算法
r = r*128/(g+b +1);
g = g*128/(r+b +1);
b = b*128/(g+r +1);
2、代码实现
public Bitmap render(Bitmap bitmap){if(bitmap == null)return null;int width = bitmap.getWidth();int height = bitmap.getHeight();int[] pixels = new int[width * height];bitmap.getPixels(pixels ,0 , width , 0 , 0 , width , height);for(int i=0 ; i<height ; i++){for(int j=0 ; j<width ; j++){int pixel = pixels[i*width +j];int r = (pixel & 0x00ff0000)>>16;int g = (pixel & 0x0000ff00)>>8;int b = (pixel & 0x000000ff);r = r*128/(g+b +1);r = colorSafe(r);g = g*128/(r+b +1);g = colorSafe(g);b = b*128/(g+r +1);b = colorSafe(b);pixels[i*width +j] = (pixel & 0xff000000) + (r<<16)+ (g<<8) +b;}}return Bitmap.createBitmap(pixels ,width , height , Config.ARGB_8888);}public int colorSafe(int value) {if(value<0){value = 0;}if(value>255){value = 255;}return value; }
)
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