Isovalue

[stefan.l]

20140402_1215_Radar_region.png (6.19 KiB) Viewed 8709 times

20140402_1215_Radar_region_interpolation.png (7.99 KiB) Viewed 8709 times

20140402_1215_Radar_region_interpolation_combination.png (47.81 KiB) Viewed 8707 times

Good evening,

I would like to convert an image into isolines. You can see that there are value range in this picture.
It's pixelised and I'd like to convert it into smooth isolines like in the seconde picture (a sort of interpolation) and why not change the value of the color of a value range.
Could you tell me if it's possible ?

Warm regards.

Stefan

[fmw42]

Not with IM directly. But you may be able to do smoothing with autotrace or potrace, which convert your image to vector format.

[stefan.l]

Thanks a lot for your reply.

I don't want to make a vectorized picture.
I saw that it was possible to isoline a picture on ImageMagick web site but can't succeed in finding where I found this topic.

Warm regards

[fmw42]

see http://www.imagemagick.org/Usage/draw/#svg_output for smoothing shapes. But it uses autotrace