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Integer cosine transform for image compressionThis article describes a recently introduced transform algorithm called the integer cosine transform (ICT), which is used in transform-based data compression schemes. The ICT algorithm requires only integer operations on small integers and at the same time gives a rate-distortion performance comparable to that offered by the floating-point discrete cosine transform (DCT). The article addresses the issue of implementation complexity, which is of prime concern for source coding applications of interest in deep-space communications. Complexity reduction in the transform stage of the compression scheme is particularly relevant, since this stage accounts for most (typically over 80 percent) of the computational load.
Document ID
19940025116
Document Type
Other
Authors
Cheung, K.-M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Pollara, F. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Shahshahani, M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 6, 2013
Publication Date
May 15, 1991
Publication Information
Publication: The Telecommunications and Data Acquisition Report
Subject Category
COMPUTER PROGRAMMING AND SOFTWARE
Funding Number(s)
PROJECT: RTOP 310-30-71-83-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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NameType 19940025116.pdf STI