将RGB转换为HSV 在书上看到的 希望能帮上忙-of HSV to RGB conversion in the book saw the hope of any help here

一段HSV、RGB相互转换的代码，看来应该是简化算法

PNG开放源接口 The interface has been designed to be as simple and intuitive as possible. It supports plotting and reading in the RGB (red, green, blue), HSV (hue, saturation, value/brightness) and CMYK (cyan, magenta, yellow, black) colour spaces, bas