Semantic text extraction from CAPTCHA using Neural Networking

Abstract

CAPTCHA stands for Completely Automated Public Turing Test to distinguish Computers and Humans Apart. CAPTCHA is used for a variety of reasons, includ ing internet security. There are various CAPTCHA methods available nowadays, including text-based, sound-based, picture-based, puzzle-based, and so on. The most prevalent variety is text-based CAPTCHA, designed to be easily recognized by hu mans, frequently used to separate people from automated applications, and challeng ing to understand by machines or robots. However, as deep learning advances, it’ll become much easier to create Convolutional Neural Network (CNN) models which will successfully decipher text-based CAPTCHAs. The CAPTCHA-breaking work flow consists of attempts, techniques, and enhancements to the computation-friendly Convolutional Neural Network (CNN) version that aims to reinforce accuracy. In comparison to the break of the whole CAPTCHA shutter at an equivalent time to separate CAPTCHA images for individual characters from 2 pixels on the corner of the sector with a replacement set of coaching data, then offered an efficient division of the network separation to interrupt the transmission of CAPTCHA text. Se mantic textual content segmentation may be a natural step in developing coarse to first-class inference. The inspiration is often placed in classification, which creates a prediction for a whole input.

Description

Cataloged from PDF version of thesis.
Includes bibliographical references (pages 44-46).
This thesis is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Computer Science and Engineering, 2022.

Keywords

CAPTCHA, Convolutional neural networks, Recurrent Neural Networks.

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