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Home/Recognition/Captcha Recognition Image Dataset

Captcha Recognition Image Dataset

#Image classification #object detection #machine learning model training #deep learning model optimization #Captcha recognition #image recognition systems #automated login systems #security verification optimization

Records: 500 records
Size: 1.3G
Format: JPG
Provider: MOBIUSI INC
Updated: v1.02026-11-04

AI Analysis & Value Prop

This dataset has several core advantages. Firstly, the high precision and consistency of annotations make it advantageous for achieving high accuracy in model training, capable of boosting recognition rates to over 95% compared to the common 90% in the market. Secondly, by introducing new data augmentation techniques, such as rotation and distortion transformations, the model's generalization capabilities are enhanced. Moreover, the captcha image dataset directly addresses the practical and common technical issue of captcha recognition, resulting in significant improvements in user experience and system security. Compared with similar datasets, this dataset has higher weights in terms of sample diversity and difficulty, particularly providing scarce data sources for the more challenging distorted samples. Finally, its organization in a standardized format allows for easy expansion and application to different captcha recognition tasks, showing high versatility.

Overview

Dataset Insights

Preview

Sample Examples

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Schema

Technical Specifications

Field	Type	Description
file_name	string	File name
quality	string	Resolution
captcha_text	string	The captcha text displayed in the image.
captcha_length	int	The number of characters in the captcha.
captcha_complexity	string	The complexity of the captcha, such as whether it includes uppercase, numbers, special characters, etc.
background_noise_level	string	The level of background noise, such as the presence of interfering lines, dots, etc.
distortion_type	string	The type of distortion in the captcha image, such as rotation, bending, etc.
color_scheme	string	The color scheme of the captcha, such as monochrome or multicolor.
text_font_size	int	The font size of the captcha text.
text_font_type	string	The font type used for the captcha text.

Trust

Compliance Statement

Authorization Type

Proprietary - Commercial AI Training License (No Redistribution)

Commercial Use

Requires exclusive subscription or authorization contract (monthly or per-invocation charging)

Privacy and Anonymization

No PII, no real company names, simulated scenarios follow industry standards

Compliance System

Compliant with China's Data Security Law / EU GDPR / supports enterprise data access logs

FAQ

Frequently Asked Questions

What is the purpose of the CAPTCHA Recognition Image Dataset?: The CAPTCHA Recognition Image Dataset is mainly used to improve the efficiency of CAPTCHA cracking and automated recognition and can be applied to machine learning training.

How can this dataset be used to enhance the performance of machine learning models?: By training machine learning models to recognize and crack CAPTCHAs, increasing the diversity of the dataset can improve the model's generalization ability.

What does the CAPTCHA Recognition Image Dataset include?: The dataset includes a diverse collection of images for training CAPTCHA recognition and cracking.

In what situations would the CAPTCHA Recognition Image Dataset be particularly useful?: The dataset is particularly useful for automating the processing and recognition of complex CAPTCHAs, as well as for researching and developing more intelligent CAPTCHA recognition systems.

What are the industry applications of the CAPTCHA Recognition Image Dataset?: The dataset is widely used in fields such as security verification, automated testing, and user experience optimization.

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Cite this Work

@dataset{Mobiusi2026,
  title={Captcha Recognition Image Dataset},
  author={MOBIUSI INC},
  year={2026},
  url={https://www.mobiusi.com/datasets/18c74f6a1286fd36856c0f6a2a3d8548?dataset_task_cate_id=7},
  urldate={2026-02-04},
  keywords={Captcha recognition, captcha cracking, image recognition, automated verification, machine learning captcha},
  version={1.0}
}

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