My users draw their signature in my application using touch events and I convert it to a bitmap. I want to extract unique specifications of each signature and compare it by its
There is a similar question asked: Bitmap (of a signature) comparison in c#
I have also found one article in channel9 http://channel9.msdn.com/coding4fun/blog/Contour-Analysis-for-Image-Recognition-in-C
It requires a complex logic to be created, there are various products available for signature verification and recognition, I have found following code written in vb 6.0 which might be of some help: http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=38215&lngWId=1
In nutshell it requires lots of efforts, so you can ask client if by specifying some unique code or question the requirement "matching of signature" can be fulfilled.