# nickliqian/cnn_captcha

use cnn recognize captcha by tensorflow. 本项目针对字符型图片验证码，使用tensorflow实现卷积神经网络，进行验证码识别。

Repository: https://github.com/nickliqian/cnn_captcha
Canonical: https://ross.abutalabs.com/products/cnn_captcha
Language: Python
License: Apache-2.0
License Family: permissive
Topics: python, cnn, tensorflow
Last push: 2022-12-08T05:22:24+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 2856, "days_push": 1364, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2881, forks 783 (observed 2026-08-28T04:07:28.023629+00:00)

## What it is
A Python project that uses convolutional neural networks built with TensorFlow to recognize character-based image captchas. It packages validation, training, verification, recognition, and an API server module to streamline end-to-end captcha recognition.

## Use cases
- recognize character captchas from images
- train a CNN model to crack captchas for web scraping
- serve captcha recognition as an HTTP API
- batch-verify captcha recognition accuracy
- learn CNN-based image recognition with a practical example

## When to choose
- you need to recognize static character-based captchas end-to-end
- you want a self-hosted captcha recognition API without paying for OCR services
- you have labeled captcha images and want a ready-made training pipeline

## When to avoid
- you need to recognize click-based or drag-based captchas (use darknet_captcha instead)
- you need actively maintained TensorFlow 2.x code or recent updates
- you need general-purpose OCR for documents rather than captchas

## Facets
- artifact type: library
- maturity: maintenance
- function: machine-learning, deep-learning, ocr, image-processing, http-server
- domain: machine-learning, computer-vision, image-processing, crawlers
- platform: python, windows
- tags: captcha-recognition, cnn, tensorflow, ocr, web-scraping, automation, linux, macos

## Member repositories
- nickliqian/cnn_captcha (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:28.023629+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:35:32.660676+00:00, confidence not recorded.
  - readme: https://github.com/nickliqian/cnn_captcha (fetched 2026-08-28T04:07:28.023629+00:00, sha 760e06b0d8ac)
- Data as of 2026-08-30T08:39:29.467469+00:00.