extended color meaning in English

稀释色料
延伸色

According to principles and human perception of color , a hsl ( hue saturation light ) color space , which is perceptively consistent with human vision , is selected and divided . the similarity between two colors is re - defined in order to accord with human discernment for colors . the method of extending color histogram is presented to match images with different colors
从人类色彩感知的角度出发，研究了用于图象检索的色彩空间，特征提取和相似性度量等问题，将hsl色彩空间进行了划分，对每两种色彩之间的相似度进行了重新定义，便其更好地符合人对图象色彩的辨别能力。