TagCaptcha : annotating images with CAPTCHAs

Morrison, Donn Alexander; Marchand-Maillet, Stéphane; Bruno, Eric

doi:10.1145/1600150.1600166

Proceedings chapter

English

TagCaptcha : annotating images with CAPTCHAs

Contributors

Morrison, Donn Alexander; Marchand-Maillet, Stéphane

; Bruno, Eric

Presented at

New York (USA)

Published in

Proceedings of the ACM SIGKDD Workshop on Human Computation, HCOMP '09, p. 44-45

Publisher

ACM

Publication date

2009

Abstract

Image retrieval has long been plagued by limitations on automatic methods because they cannot reliably extract semantic data from low-level features. The result is that users must formulate awkward and inefficient queries in terms these systems can understand. Humans, on the other hand, have the ability to quickly and accurately summarise visual data. This dichotomy, named the semantic gap, is a fundamental problem in image retrieval. We aim to narrow the semantic gap in a typical retrieval scenario by motivating users to provide semantic image annotations. We propose a system of collecting image annotations based on the need for human verification on the web. Similar in principle to work by von Ahn et al. [2, 3], the idea is to exploit the requirement of users to pass tests in order to incrementally annotate images.

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

MORRISON, Donn Alexander, MARCHAND-MAILLET, Stéphane, BRUNO, Eric. TagCaptcha : annotating images with CAPTCHAs. In: Proceedings of the ACM SIGKDD Workshop on Human Computation, HCOMP ’09. New York (USA). [s.l.] : ACM, 2009. p. 44–45. doi: 10.1145/1600150.1600166

Proceedings chapter (Published version)

Identifiers

PID : unige:47665
DOI : 10.1145/1600150.1600166

Additional URL for this publication

http://dl.acm.org/citation.cfm?doid=1600150.1600166

ISBN

978-1-60558-672-4

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03/12/2025 07:38:04

TagCaptcha : annotating images with CAPTCHAs

Contributors

Presented at

Published in

Publisher

Publication date

Abstract

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

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Additional URL for this publication

ISBN

Technical informations

Creation

First validation

Update

Status update

Last indexation