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How to convert the image with the following information: ColorType: truecolor Format: png bitDepth: 24
to a png grayscale image with bitdepth=8 in matlab ?
从文档中imwrite
imwrite
对于彩色图像，BitDepth 值是每个平面的位数
您要求 matlab 编写 3 个颜色通道，每个通道 8 位，结果为 24 位。如果要灰度，rgb2gray先用转成灰度，再写。
rgb2gray