I have a image region labelling programme which was coded with python and library of PyQt4, I want to implement the magic wand function like photoshop and GMIP to selection a region referring a object and then to label the region. Could you tell me how to implement that or Are there some libray which can be used to deal with the issue.
Thank you, I have found that a [blog]: http://www.losingfight.com/blog/2007/08/28/how-to-implement-a-magic-wand-tool/ "blog of Andy Finnel" which includes the detail of implementing such algorithm. I also found that downscaling the image that you will process and then rescale the image up is a good ideal for performance reason.