颜色处理的理论基础源代码，包括灰度化与伪彩色处理，颜色调整，亮度/对比度调整，颜色量化与减色，抖动，增强CDib等。-Deal with the theoretical basis for the color source code, including the gray-scale and pseudo-color processing, color adjustment, brightness/contrast adjustment, color quantization and Hypoc