ADPCM for advanced LANDSAT downlink applications

Under funding from the Defense LANDSAT Program Office, a method was developed for compressing multispectral data. A rate-controlled adaptive differential pulse code modulation technique was developed with minimal complexity for downlink applications. This algorithm uses an adaptive 2-D and 3-D predi...

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Main Authors: Brower, B.V., Couwenhoven, D., Gandhi, B., Smith, C.
Format: Conference Proceeding
Language:English
Subjects:
Downlink
Image coding
Image quality
Image resolution
Modulation coding
Pulse modulation
Remote sensing
Satellites
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creator Brower, B.V.
Couwenhoven, D.
Gandhi, B.
Smith, C.
description Under funding from the Defense LANDSAT Program Office, a method was developed for compressing multispectral data. A rate-controlled adaptive differential pulse code modulation technique was developed with minimal complexity for downlink applications. This algorithm uses an adaptive 2-D and 3-D prediction of pixels. The difference between the predicted and original pixel is quantized with a locally adaptive quantizer. This technique has produced compression ratios of up to 2.5:1 losslessly and up to 5:1 with minimal visual image quality loss on LANDSAT and M-7 high resolution multispectral data. This paper describes the ADPCM algorithm and its impact on numerical, visual and machine exploitation performance.< >
doi_str_mv 10.1109/ACSSC.1993.342323
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subjects Downlink
Image coding
Image quality
Image resolution
Modulation coding
Pulse modulation
Remote sensing
Satellites
title ADPCM for advanced LANDSAT downlink applications
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