在彩色图像中,一般有3个通道,分别是R、G、B三个通道,每个通道上都有一个相同大小的矩阵,矩阵上的元素取值范围为0~255。 灰度图像则只有一个通道,即只有一个矩阵,元素取值范围为0~255. 现在请你写一个方法,将一张彩色图片转为灰度图片。 其中,彩色转灰度的方式可以采用平均法,即将R、G、B 3个通道的每个像素点加和取平均。
##提交方式
github工程源代码文件链接+结果截图
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