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Abstract:

Inspired by previous work on the modelling of wavelet coefficients, and on the observed differences between distributions of wavelet coefficients belonging to different landscapes, we present a lossless compressor of multispectral images based on the prediction of wavelet coefficients, conditioned to the landscape. This compressor operates blockwise. The wavelet transform is applied to each block, and detail coefficients from the two finest scales are predicted by means of a linear combination of other coefficients, which may belong to the same band as the predicted coefficient, or to a previously coded band. The weights for the lineal combination are estimated on-line: for each detail subband, the compressor is trained on all the detail coefficients belonging to the same class. In addition, a different band ordering is considered for each block. Differences in prediction are coded with a conditional entropy coder. Preliminary results reveal that we obtain more accurate predictions.

Registro:

Documento: Conferencia
Título:Classification and prediction of wavelet coefficients for lossless compression of landsat images
Autor:Acevedo, D.; Ruedin, A.
Ciudad:San Diego, CA
Filiación:Departamento de Computatión, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Departamento de Computatión, FCEyN, Pab. I, CP 1428, Ciudad de Buenos Aires, Argentina
Palabras clave:Classification; Lossless; Multispectral; Prediction; Wavelet coefficients; Classification (of information); Codes (symbols); Entropy; Wavelet transforms; Coded band; Landsat images; Multispectral images; Wavelet coefficients; Image compression
Año:2006
Volumen:6300
DOI: http://dx.doi.org/10.1117/12.677384
Título revista:Satellite Data Compression, Communications, and Archiving II
Título revista abreviado:Proc SPIE Int Soc Opt Eng
ISSN:0277786X
CODEN:PSISD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v6300_n_p_Acevedo

Referencias:

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Citas:

---------- APA ----------
Acevedo, D. & Ruedin, A. (2006) . Classification and prediction of wavelet coefficients for lossless compression of landsat images. Satellite Data Compression, Communications, and Archiving II, 6300.
http://dx.doi.org/10.1117/12.677384
---------- CHICAGO ----------
Acevedo, D., Ruedin, A. "Classification and prediction of wavelet coefficients for lossless compression of landsat images" . Satellite Data Compression, Communications, and Archiving II 6300 (2006).
http://dx.doi.org/10.1117/12.677384
---------- MLA ----------
Acevedo, D., Ruedin, A. "Classification and prediction of wavelet coefficients for lossless compression of landsat images" . Satellite Data Compression, Communications, and Archiving II, vol. 6300, 2006.
http://dx.doi.org/10.1117/12.677384
---------- VANCOUVER ----------
Acevedo, D., Ruedin, A. Classification and prediction of wavelet coefficients for lossless compression of landsat images. Proc SPIE Int Soc Opt Eng. 2006;6300.
http://dx.doi.org/10.1117/12.677384