Detect a edge as a function

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Nguyen Tan Duoc
Nguyen Tan Duoc 2015-9-25
评论： Nguyen Tan Duoc 2015-9-25
I have a image that are edges of an object (file attached)
Now, i want to detect all of edges as functions like X and Y vector. X contains position on x-axis, Y contains position on y-axis of every point in a edge (curve). Every edge (curve) has a function (a set of x,y vector). But i have no any algorithm to do that. I need a help

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Walter Roberson
Walter Roberson 2015-9-25
cellfun(@(Col) find(YourImage(:,Col)), 1:size(YourImage,1), 'Uniform', 0)
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Image Analyst
Image Analyst 2015-9-25
If you can get a binary image instead of that, then you can use bwboundaries(). It looks like you used either edge() or bwperim(). Don't use bwperim if you want edge coordinates. You might want to experiment with activecontour() instead of edge().

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