Title :
Reversible compression of multispectral imagery based on an enhanced inter-band JPEG prediction
Author :
Aiazzi, B. ; Alba, P.S. ; Alparone, L. ; Baronti, S.
Author_Institution :
Istituto di Ricerca sulle Onde Elettromagnetiche, CNR, Firenze, Italy
Abstract :
A modified inter-band scheme based on the predictors used by lossless JPEG is proposed for lossless data compression of multispectral images. Basically, the value of the current pixel in the current band is predicted by the best JPEG predictor on the previously encoded band. Improvements are achieved by considering also the corresponding prediction error on the previous band. Coding performances, assessed on a variety of Landsat TM data, are better by about 3% than those of the basic inter-band scheme, and by 7% than those attained by lossless JPEG
Keywords :
data compression; geophysical signal processing; geophysical techniques; image coding; remote sensing; Landsat TM; current band; current pixel; data compression; encoded band; enhanced inter-band JPEG prediction; geophysical measurement technique; image coding; inter-band scheme; land surface; lossless JPEG; lossless compression; multispectral image; multispectral imagery; optical imaging; predictor; remote sensing; reversible compression; terrain mapping; Data compression; Electronic mail; Facsimile; Image coding; Multispectral imaging; Personal communication networks; Pulse modulation; Remote sensing; Satellites; Transform coding;
Conference_Titel :
Geoscience and Remote Sensing, 1997. IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development., 1997 IEEE International
Print_ISBN :
0-7803-3836-7
DOI :
10.1109/IGARSS.1997.609182
