我怎样才能从mahotas中的图像和python中的opencv中减去背景？ [英] How can i subtract the background from an image in mahotas and opencv in python?

问题描述

我有很多像这个或像这个我用这个代码：

I have many image like this or like this and i use this code:

fork = mh.imread(path)
bin = fork[:,:,0]
bin = mh.erode(bin)
bin = (bin < 80)

但是我必须使用这个：

bin = (bin < 127)

对于第一个。

有一种方法可以自动获得没有背景的好图像，或者我必须选择一个中值，希望对我的大多数图像都有好处？

There is a way for automatically obtain a good image without background, or i have to choose a median value hopefully is good for the most of my images?

推荐答案

有一个名为Otsu Threshold的阈值。 此处您有更多信息。

There is a threshold value that is called "Otsu Threshold". Here you have more information.

您可以使用 otsu 在Mahotas或 threshold_otsu scikit-image 中的$ c> ：

You can use otsu to do it in Mahotas or threshold_otsu in scikit-image:

fork = mh.imread(path)
bin = fork[:,:,0]
thresh = mh.otsu(bin)
binary =( bin< thresh)

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