NDLI: Watermark embedded DCT indexing keys for portable imaging devices

Content Provider	IEEE Xplore Digital Library
Author	Armstrong, A. Jiang, J.
Copyright Year	2002
Description	Author affiliation: Sch. of Comput., Univ. of Glamorgan, UK (Armstrong, A.; Jiang, J.)
Abstract	The maintenance required on modern media databases to allow efficient indexing and retrieval is becoming an ever-increasing burden. An explosion in the content of the Internet, the lowering in costs associated with imaging devices and the digital revolution have placed much higher requirements on the storage of graphics and video, both in commercial domains and at home. Fully automated indexing systems will be very desirable to manage and organise these large amounts of data. We tackle the problem of image indexing in the compressed domain using a neural network extraction technique together with a DCT domain watermark. This approach allows the indexing of the image entirely in the DCT domain, thus benefits from substantial computational savings. Coupled with DCT based watermarking, the technique allows for the real-time embedding of indexing data in popular image (JPEG) and video (MPEG) formats. Such a low-cost combination (both in processing and key storage) makes the method highly suitable for use in portable imaging devices such as digital cameras where it would be highly desirable to have some means of indexing the images they have stored.
Sponsorship	Consumer Electronics Soc
Starting Page	126
Ending Page	127
File Size	239688
Page Count	2
File Format	PDF
ISBN	0780373006
DOI	10.1109/ICCE.2002.1013958
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-06-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Watermarking Discrete cosine transforms Indexing Image storage Image databases Information retrieval Explosions Internet Costs Graphics
Content Type	Text
Resource Type	Article

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