Open Access

Compression at the Source for Digital Camcorders

EURASIP Journal on Advances in Signal Processing20072007:024106

https://doi.org/10.1155/2007/24106

Received: 2 October 2006

Accepted: 30 March 2007

Published: 22 May 2007

Abstract

Typical sensors (CCD or CMOS) used in home digital camcorders have the potential of generating high definition (HD) video sequences. However, the data read out rate is a bottleneck which, invariably, forces significant quality deterioration in recorded video clips. This paper describes a novel technology for achieving a better utilization of sensor capability, resulting in HD quality video clips with esentially the same hardware. The technology is based on the use of a particular type of nonuniform sampling strategy. This strategy combines infrequent high spatial resolution frames with more frequent low resolution frames. This combination allows the data rate constraint to be achieved while retaining an HD quality output. Post processing via filter banks is used to combine the high and low spatial resolution frames to produce the HD quality output. The paper provides full details of the reconstruction algorithm as well as proofs of all key supporting theories.

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Authors’ Affiliations

(1)
Department of Electrical Engineering (EE), Technion-Israel Institute of Technology
(2)
School of Electrical Engineering and Computer Science, University of Newcastle

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Copyright

© Nir Maor et al. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.