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Fast content access and retrieval of JPEG compressed images

Mehrabi, M and Zargari, F and Ghanbari, M and Shayegan, MA (2016) 'Fast content access and retrieval of JPEG compressed images.' Signal Processing: Image Communication, 46. 54 - 59. ISSN 0923-5965

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Abstract

© 2016 Elsevier B.V. All rights reserved. Fast content access and content based retrieval of images are among the common web and signal processing applications; on the other hand, JPEG is the dominant format for image compression in a wide range of applications. In this paper, a simple and fast method for content access and retrieval of JPEG coded images is presented which does not require complete decompression of coded images. The presented method uses DCT coefficients of coded blocks in the JPEG bit stream to extract average values of various size picture blocks namely DC values. The DC values provide an approximation of the coded image, which can be employed to construct a lower resolution picture or color histogram of the JPEG coded image for retrieval and other applications without full decompression of the image.

Item Type: Article
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Jim Jamieson
Date Deposited: 08 Jun 2016 14:44
Last Modified: 30 Jan 2019 16:22
URI: http://repository.essex.ac.uk/id/eprint/16690

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