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clippit / p-NJU

Assistant GUI Client of p.nju.edu.cn
http://pnju.dayanjia.com
7 stars 6 forks source link

recognition of 4-digits captcha #2

Closed clippit closed 11 years ago

clippit commented 12 years ago

neet to be updated to adapt the new captcha

rdgt321 commented 12 years ago

I have just writen an algorithm to impl the recognition of 4-digits captcha.It uses 2 steps to deal with it.Because the captcha from p.nju.edu.cn is very clear and neat.So it just a simple dividing the captcha into 5 ares and convert the image to gray(use a specific threshold).After that,it calcls the sum of the point and feature-cross-yline times in each area.it can simply mapping from pic-info to txt. PS:I don't know if git can show java codes in here or not.:) or I can send the example source code to you by RenRen or QQ:).

clippit commented 11 years ago

has been solved in v0.3 706b0ddc7d73a390c84189cf1d6c9d0ea8a5281e