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dc.contributor.advisorMostakim, Mr. Moin
dc.contributor.advisorKhondaker, Ms. Arnisha
dc.contributor.authorChowdhury, Iftekhar Kabir
dc.contributor.authorJarif, Md. Nahiyan
dc.contributor.authorShowmik, Sadman
dc.contributor.authorOishi, Farah Farhin
dc.contributor.authorBin Jinnat, Afif
dc.date.accessioned2022-12-14T07:34:21Z
dc.date.available2022-12-14T07:34:21Z
dc.date.copyright2022
dc.date.issued2022-05
dc.identifier.otherID: 18101463
dc.identifier.otherID: 18101348
dc.identifier.otherID: 18101124
dc.identifier.otherID: 18101033
dc.identifier.otherID: 18101047
dc.identifier.urihttp://hdl.handle.net/10361/17648
dc.descriptionThis thesis is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Computer Science and Engineering, 2022.en_US
dc.descriptionCataloged from PDF version of thesis.
dc.descriptionIncludes bibliographical references (pages 44-46).
dc.description.abstractCAPTCHA 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.en_US
dc.description.statementofresponsibilityIftekhar Kabir Chowdhury
dc.description.statementofresponsibilityMd. Nahiyan Jarif
dc.description.statementofresponsibilitySadman Showmik
dc.description.statementofresponsibilityFarah Farhin Oishi
dc.description.statementofresponsibilityAfif Bin Jinnat
dc.format.extent46 Pages
dc.language.isoen_USen_US
dc.publisherBrac Universityen_US
dc.rightsBrac University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
dc.subjectCAPTCHAen_US
dc.subjectConvolutional neural networksen_US
dc.subjectRecurrent Neural Networks.en_US
dc.subject.lcshNeural networks (Computer science)
dc.titleSemantic text extraction from CAPTCHA using Neural Networkingen_US
dc.typeThesisen_US
dc.contributor.departmentDepartment of Computer Science and Engineering, Brac University
dc.description.degreeB. Computer Science and Engineering


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