colormap for openings in crack

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Duncan 2014-8-29

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评论： Image Analyst 2014-9-10

I have this image and i would like to produce a colormap.

this is an edge detected image of a crack on concrete. I have already found the distances and coordinate points between each pixel. Now what I would like to do is create a colormap between the edges showing according to the crack opening distances.

Any ideas of how I can go about doing this?

I've thought about plotting straight lines with different line colors but it doesn't look as nice.

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回答（1 个）

Image Analyst 2014-8-29

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Display, with imshow(), the distance map of the region in between the lines. Use caxis() to tell it what value each end of the colormap should correspond to. Then create a colormap to correspond to the distances, e.g. jet(256). Then call colormap(yourColorMap). For example (untested)

imshow(distanceMapImage, []);
axis on;
caxis([0, 10]);
colormap(jet(256));
colorbar;

Post your distance map if you can't figure it out.

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Image Analyst 2014-8-30

Then you need to get a binary image of just branches. Solid, not outlines. You can do this by connecting the open ends and calling imfill. Then call bwdist() and colormap().