تلخیص
The “Consultative Committee for Space Data
Systems” (CCSDS) has recommended an image data compression
standard: CCSDS 122.0-B-1, to be used onboard space data
systems. This research presents the algorithm implementation of
the CCSDS image data compression standard (CCSDS-IDC) on
“Digital Signal Processor” platform (DSP). The algorithm is
applied to two-dimensional digital grey scale image data from
imaging payload devices and uses two-dimensional “Discrete
Wavelet Transform” (DWT) followed by progressive “Bit Plane
Encoder” (BPE) to generate the compressed encoded bit stream.
This research aims to give an efficient implementation of the
standard in terms of cost, memory utilization, customization
flexibility, power and throughput, on the DSK6713 floating point
DSP platform. DSP and “Synchronous Dynamic RAM”
(SDRAM) based implementation scheme is adopted. SDRAM
dynamic memory allocation scheme is used for program, data
and working memory. DSP multiple ALUs and pipelining has
been utilized for efficient throughput. The results evaluated for
the lossy compression scheme validate the performance of the
algorithm onboard DSP platform. The implementation also
serves as reference practical system to be used in space-borne
applications.
Muhammad Ammar, Yasir Saleem. (2015) Implementation of CCSDS Image Data Compression Standard on DSP Platform, Journal of Space Technology , Volume 5, Issue 1.
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