2015
DOI: 10.33107/ijbte.2015.4.1.02
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Labeled-Image CAPTCHA: concept of a secured and universally useful CAPTCHA

Abstract: Captcha (Completely Automated Public Turing test to tell Computers and Humans Apart) is a widely used online security tool that ensures that a computer program is not posing as a human user. While smart programs with advanced image processing capability have already cracked picture based captcha systems there is a need for making the test harder. This paper presents a design prototype of a simplified type of labeled-image captcha where a picture of a common animal or household item is marked with a number of d… Show more

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