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Selective concealment of characters for privacy protection
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2014 (English)In: Proceedings - International Conference on Pattern Recognition, 2014, 333-338 p.Conference paper (Refereed)
Abstract [en]

A method of concealing characters is proposed for degrading legibility of privacy sensitive textual information in natural scene, such as car license plate numbers and name tags. An important property of the proposed method is that it realizes selective concealing of characters, that is, the proposed method degrades legibility of character regions without degrading the quality of non-character regions. This selective concealment is realized because characters have special concealment characteristics. Specifically, character legibility can be degraded by damaging stroke structure by using exemplar-based image in painting, which does not affect non-character regions. Experimental results of qualitative and quantitative evaluations have proven that the selective concealment is practically possible. Furthermore, the quantitative evaluation through a subjective experiment revealed appropriate setups of image in painting for maximizing selective concealment performance.

Place, publisher, year, edition, pages
2014. 333-338 p.
Keyword [en]
Software engineering, Exemplar-based, Natural scenes, Privacy protection, Quantitative evaluation, Subjective experiments, Textual information, Pattern recognition
National Category
Medical Engineering
URN: urn:nbn:se:kth:diva-167879DOI: 10.1109/ICPR.2014.66ISI: 000359818000055ScopusID: 2-s2.0-84919935602ISBN: 9781479952083OAI: diva2:821211
22nd International Conference on Pattern Recognition, ICPR 2014, 24 August 2014 through 28 August 2014

QC 20150615

Available from: 2015-06-15 Created: 2015-05-22 Last updated: 2015-09-14Bibliographically approved

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Pålsson, Mårten
Medical Engineering

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