Introduction
Captcha OCR is a captcha recognizer. We support the captcha which is generated by ASPX captcha generator (5 numberic charators), NCKU, and THSRC.
For the users, we also create extensions on Google Chrome and Microsoft Edge. You can download and install by link:
Usage
This function is easy to use. Only need to put your base64 string
(which is transform from captcha image) after parameter base64_str,
and you will get a response contain recognition result.
You can also use POST method to achieve. And the type of body must be application/json.
Example
If you want to recognize captcha from ASPX captcha generator:
://ocr.holey.cc/aspx_5c?base64_str=<base64_string>If you want to recognize captcha from CHT:
://ocr.holey.cc/cht?base64_str=<base64_string>If you want to recognize captcha from NCKU:
://ocr.holey.cc/ncku?base64_str=<base64_string>If you want to recognize captcha from Taiwan Railway:
://ocr.holey.cc/railway?base64_str=<base64_string>If you want to recognize captcha from THSRC:
://ocr.holey.cc/thsrc?base64_str=<base64_string>Accuracy
| ASPX_5C | NCKU | Taiwan Railway | THSRC |
|---|---|---|---|
Train/Test = 10000/10000
Best accuracy: 99.03% |
Train/Test = 10000/10000
Best accuracy: 100.00% |
Train/Test = 10000/10000
Best accuracy: 98.08% |
Train/Test = 10000/10000
Best accuracy: 99.06% |
| CHT_Classify | CHT_4C | CHT_5C | CHT_6C |
|---|---|---|---|
Train/Test = 50000/10000
Best accuracy: 99.09% |
Train/Test = 10000/10000
Best accuracy: 99.08% |
Train/Test = 10000/10000
Best accuracy: 99.06% |
Train/Test = 10000/10000
Best accuracy: 99.08% |
Contact
If you have any questions about this project, please contact us:
- By website: Homepage of author
- By email: [email protected]