Sepia Tone 방법
Yeah, I take my color and multiply each r,g,b by the gray value for the pixel: [r|g|b]1 are inputs [r|g|b]2 are outputs gr = 0.30 * r1 + 0.59 * g1 + 0.11 * b1; // get brightness r2 = gr * 1; // add tint g2 = gr * 0.71; b2 = gr * 0.41; if u don't satisfy the effect of the hue , u can also do some other manipulation. e.g. increase the contrast r2 = r2* a; if(r2 > 255) r2 = 255; g2 = g2* a; if(g2 >..