COPERM: Transform-domain energy compaction by optimal permutation

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