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en:addons:capmonster:learning:create-project

1. Creating project and loading captcha images.

To start working run the program and press “Create new porject”, as simple as that.

Loading captcha images

For the first, you should load solved catpcha images basing on which you will train your module. There are two ways to do it:

1) Load only captcha images and solve them via recognition services… For it you should enter login and password for one of the services in program settings and select recognition results. In this case we recommended to recognize captchas by groups. Collection for catching symbols can be recognized in standard way and collections for training and testing should be recognized with 100% accuracy. It can be achived by sending captcha images to several people at the same time, some services, for example Anti-Gate, provide this facility.

2) Create project for ZennoPoster which allows to download and solve multiple captcha images. Sample project can be downloaded here. As a result you should get captcha images with their text in text file with same name.

Or captcha images should be stored with their text value as file name, i.e. if captcha text is “qwe”, captcha image should have “qwe.jpg” file name. The program accepts such images as well.

How many images required?

If you create module for simple captcha with low symbol distortion or without distortion, 300 images will be enough. For complex captchas - 1000 images required. All these captchas should be recognized by services, which will cost you from several cents till a couple of dollars. But you can count how many captcha images are needed exactly and save few tens of cents.

Why captcha images required:

  • for collecting symbols. You can count images in the following way - every symbol requires from 3 till 150 samples depending on captcha complicity. Check how many symbols and their types the captcha contains.
  • for preventing false recognition (required 10 times less images than for collecting symbols).
  • for testing recognition module (approximately 100 images)

Sorting images

Captcha images will be sorted into collections automatically after loading. But you can do it manually. Re-sorting is not possible, so, if you are not sure how to sort images into groups, use automatic option.

en/addons/capmonster/learning/create-project.txt · Last modified: 2015/10/15 13:06 by vladz