中文说明：
阅读一幅图像，然后绘制其3D直方图，包括R和G或R和B或G和B。我以前从未找到正确的代码
English Description：
Read an image and draw its 3D histogram, including R and g or R and B or G and B. I've never found the right code before
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中文说明：
阅读一幅图像，然后绘制其3D直方图，包括R和G或R和B或G和B。我以前从未找到正确的代码
English Description：
Read an image and draw its 3D histogram, including R and g or R and B or G and B. I've never found the right code before