Verification Code hack

At present, many websites require users to enter a verification code, although it is necessary security measures, but also with the resulting poor user experience.

Recent project needs, cracked some entry-level verification code, here the process is recorded, as a learning beginning.

Verification code type:

1. Color

2. There is interference line

3. No adhesion or a few adhesion

Hack tool:

1.python

2.python language image processing Library pillow

　　

Crack steps

1. Sharpening

2. Convert to Grayscale

3. Two value processing

4.8 Neighborhood Noise reduction algorithm for noise reduction

5. Cutting

6. Use the Google Open source OCR library Tessact to identify individual verification codes

Not to be continued ...

Verification Code hack