COPERM: transform-domain energy compaction by optimal permutation

Nicholas D. Sidiropoulos, Marios S. Pattichis, Alan C. Bovik, John W. Havlicek

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Compaction by optimal permutation (COPERM) is a tool transform-domain energy compaction of broadband signals, whose foundation is a simple but powerful idea: Any signal can be transformed to resemble a more desirable (e.g., from a transform-domain compaction viewpoint) signal from a class of 'target' signals (e.g. DCT basis functions) by means of a suitable permutation of its samples. One application of transform-domain energy compaction is in lossy compression. We pursue one possible thread in detail and demonstrate some interesting broadband image compression results.

Original languageEnglish (US)
Pages (from-to)1679-1688
Number of pages10
JournalIEEE Transactions on Signal Processing
Issue number6
StatePublished - 1999
Externally publishedYes

Bibliographical note

Funding Information:
Manuscript received July 10, 1997; revised October 9, 1998. This work was supported in part by the Air Force Office of Scientific Research, Air Force Systems Command, USAF, under Grant F49620-93-1-0307 and by the Army Research Office under Contract DAAH 049510494. Part of this work was performed while the first author was with the Institute for Systems Research, University of Maryland, College Park. The associate editor coordinating the review of this paper and approving it for publication was Dr. Mahmood R. Azimi-Sadjadi.


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