Thank you for your replay. I'm a software engineer from china,China now have broad market prospect in Machine vision application and I am also work in this field. I am doing a survey on surface inspection recently, and want to make a surface inspection product. I download the visionappster and try it yesterday. I am glad to recommend it to my colleague.I think visionappster is similar to machine vision software like cognex or visionmaster,it aslo can publish algorithm from different community. Looking forward that will publish more algorithms and create sustainable value. best wishes to you.