If we think about this algebraically, what we really want to do is express the input pixel as the weighted sum of palette colours. This is nothing more than a linear combination of palette colours with weights :
WTI原油涨4%，报67.8美元/桶；布伦特原油涨3.69%，报73.451美元/桶。
。搜狗输入法下载是该领域的重要参考
Try it yourself
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