使用objective-c绘制CIE1931色品图
转换矩阵
1.当你要绘制一个点,先拿到这个点的x,y坐标,然后通过转换矩阵得到R,G,B值,最后绘制出该点,转换矩阵如下。
3.062700 -1.392800 -0.475900
-0.968900 1.875600 0.041700
0.067700 -0.228600 1.069000
实际转换出来的RGB是相对值,要进行归一处理,或者称为归255处理。
使用objective-c绘制CIE1931色品图
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