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Robust image obfuscation for privacy protection in web 2.0 applications

: Poller, A.; Steinebach, M.; Liu, H.


Memon, N.D. ; Society for Imaging Science and Technology -IS&T-; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Media watermarking, security, and forensics 2012 : 23 - 25 January 2012, Burlingame, California, United States; proceedings
Bellingham, WA: SPIE, 2012 (Proceedings of SPIE 8303)
ISBN: 978-0-8194-8950-0
Paper 830304
Conference "Media Watermarking, Security, and Forensics" <2012, Burlingame/Calif.>
Electronic Imaging: Science and Technology Symposium (IS&T) <2012, Burlingame/Calif.>
Conference Paper
Fraunhofer SIT ()

We present two approaches to robust image obfuscation based on permutation of image regions and channel intensity modulation. The proposed concept of robust image obfuscation is a step towards end-to-end security in Web 2.0 applications. It helps to protect the privacy of the users against threats caused by internet bots and web applications that extract biometric and other features from images for data-linkage purposes. The approaches described in this paper consider that images uploaded to Web 2.0 applications pass several transformations, such as scaling and JPEG compression, until the receiver downloads them. In contrast to existing approaches, our focus is on usability, therefore the primary goal is not a maximum of security but an acceptable trade-off between security and resulting image quality.