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Here's an image:

enter image description here

Can one, using the marching squares algorithm, write a program that given an input image like above, produces the following output:

Two chained line segments, one forming the above contours (hill-like), the other one forming the encapsuled circle contour?

If not, how else would you recommend doing it?

Phonon
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Schrödingcatbug
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  • http://stackoverflow.com/questions/17232672/drawing-isotherm-linesor-contour-using-java-given-specific-points if u ve gotten the answer then please help here. – Satya Narayan Das Jun 22 '13 at 14:45

1 Answers1

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If the marching squares algorithm is like marching cubes, it will give you both contour lines.

You can also just subtract neighboring pixels from each other (see: edge detection), if the example image is representative of your images, that you want to process.

bjoernz
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