contour in processing

the blob detector make the contour line in Processing. And the result they make here is quite awesome.

 to see the tutorial_
+ for contour map line in processing


https://forum.processing.org/topic/contour-line-maps-from-heightmap https://forum.processing.org/topic/creating-contour-maps http://www.onformative.com/lab/creating-contour-maps/ processing to illustrator http://www.jeffreythompson.org/blog/2012/05/29/easy-processing-illustrator-export-bonus-svg-export/
http://www.processing.org/discourse/beta/num_1126127996.html