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我想重现一个应用程序的扫描质量,该应用程序得到这样的图像:RGB 图像并产生良好的结果,如下所示:图像处理。我已经使用了adaptiveThreshold、adaptive_thresholding、otsu过滤器等,但它们都只是把我扔进二进制。我没有得到从纸上去除噪音并获得灰度图像线条的效果。关于解决这个问题的任何想法?