NDLI: Experiments on Partial Encryption Performance for Image Sets

Content Provider	IEEE Xplore Digital Library
Author	ZuYing Wang Ping Luo Xiaobo Li
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta. (ZuYing Wang)
Abstract	This paper reports our experiments on the effectiveness of partial encryption for image sets. Professional image databases often contain a large number of similar images. This fact provides a unique opportunity for partial encryption coding. When the image set is stored as a representative image (the average) and the differences between the originals and the average, one could either encrypt a small percentage of every image in the set, or encrypt the average image partially and a tiny portion of each difference image. In our experiment, the portion to be encrypted is simply hidden from the reconstruction algorithm. No actual encryption algorithm is used. The performance of encrypting (hiding) different portions of the image set is evaluated by visual inspection and by the PSNRs between the original and the reconstructed images. Our algorithm is presented in detail and a Webcam image set and an ultrasound image set are used in the test. Hiding the average and portions of the differences provides a better encryption performance with a small fraction of the computation cost, compared to partial encryption of all original images
Starting Page	578
Ending Page	582
File Size	447410
Page Count	5
File Format	PDF
ISBN	0780397533
DOI	10.1109/ISSPIT.2006.270867
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-08-27
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cryptography Streaming media Image coding Image databases Image reconstruction Transform coding Public key Signal processing algorithms Inspection PSNR Peak-Signal-to-Noise Ratio Partial encryption Image set JPEG 2000 Bit stream manipulation
Content Type	Text
Resource Type	Article

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2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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