How to delete the branches?

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rui gao 2019-9-23

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评论： rui gao 2019-10-4

I have a matrix which just consist by 0 and 1, like the figure above (1 is black and 0 is white). It's kind of river, but there is some noise like the red arrows above.

Is there some ways to identify these small segment lines and delete these small segment lines?

Calculating the length (pixel) of these small segment lines is not necessary, but I am interested to know it.

Any suggestion will be appreciated.

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rui gao 2019-9-23

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Maybe I can delete these segment lines in ArcGIS as the small segment lines can be identified as short length.

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darova 2019-9-23

在 MATLAB Online 中打开

See if bwmorph can manage it

I1 = bwmorph(I,'spur',inf)

rui gao 2019-9-24

Oops, for this kind of situation, the left red line should be remained, but it was deleted.

Maybe, we should add something ???

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darova 2019-9-24

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I have an idea:

Find pairs of branch/end points smaller than desired length
Select circle area between points. Find biggest area in this circle (if there are) and remove it
Place modificated circle area into original image