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:

• Captcha Recognizer (Google Chrome)
• Captcha Recognizer (Microsoft Edge)

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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.

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 NCKU:

://ocr.holey.cc/ncku?base64_str=<base64_string>

If you want to recognize captcha from THSRC:

//ocr.holey.cc/thsrc?base64_str=<base64_string>

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Accuracy

ASPX_5C	NCKU	THSRC
Train/Test = 10000/5000, Best accuracy: 98.85%	Train/Test = 10000/5000, Best accuracy: 100.00%	Train/Test = 11000/5000, Best accuracy: 96.86%

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Contact

If you have any questions about this project, please contact us:

• By website: Homepage of author
• By email: [email protected]