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Morpho filter reduce sharp

asked 2016-09-30 18:53:06 -0500

greenworld gravatar image

updated 2016-09-30 18:53:25 -0500

Hi everyone, How I can restore the sharp of a triangle after use morpho filter, My program as below: erode(imgThresholded, imgThresholded, getStructuringElement(MORPH_ELLIPSE, Size(size, size))); dilate(imgThresholded, imgThresholded, getStructuringElement(MORPH_ELLIPSE, Size(size, size))); //morphological closing (fill small holes in the foreground) dilate(imgThresholded, imgThresholded, getStructuringElement(MORPH_ELLIPSE, Size(size, size))); erode(imgThresholded, imgThresholded, getStructuringElement(MORPH_ELLIPSE, Size(size, size)));

The orgImg:

image description

The Output after using Morpho

image description

I just want to fill the holes without change the size and sharp of triangle. Can you suggest some method to solve my problem. Thank you!

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answered 2016-09-30 21:06:00 -0500

Tetragramm gravatar image

You can't easily do that. That's not how morphology works. However, if that is representative of all your images, you can pretty simply solve the problem without morphology. First use Flood Fill to set the white background to a different color. Then find all remaining white pixels. Replace them with the nearest color. Then use Flood Fill again to return the background to white.

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Thank you!

greenworld gravatar imagegreenworld ( 2016-10-01 05:27:24 -0500 )edit

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Asked: 2016-09-30 18:53:06 -0500

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Last updated: Sep 30 '16