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I want to extract contours from following image or I am wondering how to partition following image:

line image looks like:

enter image description here

This question is linked: How to superimpose contour lines on transformed image

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  • $\begingroup$ Would this help? Colorize@MorphologicalComponents[ ColorNegate@Import["http://i.stack.imgur.com/agPO0.png"], CornerNeighbors -> False] $\endgroup$ – Szabolcs Feb 20 '14 at 0:03
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i = Import["http://i.stack.imgur.com/agPO0.png"];
(mc = MorphologicalComponents[ColorNegate[i], CornerNeighbors -> False]) // Colorize
Grid@Partition[ Image /@ (Replace[mc, Except[#] -> 0, {2}] & /@ Range@Max@mc), 4]

Mathematica graphics

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