Near-lossless compression of coherent image data

Author

Aiazzi, Bruno ; Baronti, Stefano ; Alparone, Luciano

Author_Institution

I.R.O.E., CNR, Firenze, Italy

Volume

3

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

490

Abstract

Near-lossless compression, yielding a strictly bounded reconstruction error, is extended to preserve the radiometric resolution of data produced by coherent imaging systems. A noncausal DPCM, based on the rational Laplacian pyramid (RLP), recently introduced by the authors for despeckling, is adjusted to this purpose. The baseband icon of the RLP is DPCM encoded, the intermediate layers are uniformly quantized, and the bottom layer is logarithmically quantized. As a consequence, the relative error, i.e., pixel ratio of original to decoded image, can be strictly bounded by the quantization step size of the bottom layer of the RLP

Keywords

data compression; differential pulse code modulation; image coding; image reconstruction; image resolution; quantisation (signal); DPCM encoded; coherent image data compression; decorrelation; entropy coding; logarithmic quantization; noncausal DPCM; radiometric resolution; rational Laplacian pyramid; reconstruction error; uniform quantization; Biomedical imaging; Decoding; Decorrelation; Discrete cosine transforms; Discrete wavelet transforms; Error correction; Image coding; Pixel; Quantization; Remote sensing;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 2001. Proceedings. 2001 International Conference on

Conference_Location

Thessaloniki

Print_ISBN

0-7803-6725-1

Type

conf

DOI

10.1109/ICIP.2001.958158

Filename

958158