free polygon line edition

Development prototype for the interactive edition of a polygon line.
This interface doesn't require JavaScript, but JavaScript will enable faster zoom and scroll position memory.
Color image are converted to grayscale.

Only upload suitable images. See the copyright and other conditions for details.
The maximum allowed file size is 1024Kb. TIFF, JPEG, PNG, GIF, PNM (and other standard formats) are recognized.
We may re-use the uploaded files for further analysis.

You can also try these proposed images.