---
license: mit
task_categories:
- image-to-text
- token-classification
tags:
- image
- ocr
- captcha
- security
pretty_name: Outlined Text Captcha Images
size_categories:
- 1K<n<10K
---

This image collection was web scrapped from a single site. 
It comes from the **SimpleCaptcha** library, which uses a variety of formats including this one: **outlined alphanumeric characters with a stroke**.

## Image description:

- Horizontal Gradient.
- RGB Channels.
- JPG Format.
- 5 characters.
- Characters may repeat.
- Numeric and lowercase alphanumeric.

## Vocab:

- Alpha: a b c d e f g h k m n p r v w x y (17 unique)
- Number: 2 3 4 5 6 7 8 9 (8 unique)
- Total chars = 25 unique characters

This dataset intends to help improve security on websites.
Visit [Simple Captcha Library Website](https://simplecaptcha.sourceforge.net/).