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The transform (DWT) can be computed using either floating-point or integer arithmetic. The integer transform uses non-linear approximation of the 9/7 wavelet and it is used in the lossless coding scheme. The floating-point DWT contributes to the lossy scheme.
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In case the encoded bitstream is to be transmitted over a CCSDS space link, several protocols that have built in error correction and detection can be used to transfer the sequence of segments (the highest coding level in this image format).
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The effects of a single bit error can propagate to corrupt reconstructed image data to the end of the affected segment. Measures must be taken to minimize the number of potential bit errors on the transmission link.
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The transport mechanism for the delivery of the encoded bitstream shall support, in the event of a bit error, the ability to relocate the header of the next segment.
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Unlike ICER that has been used in products and projects outside the space agencies, this image compression system has no history of use outside the space agencies.
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This compression format is sensitive to bit corruption in the deep space channel, but it is unclear if this sensitivity is greater than ICER or JPEG 2000.
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lossless to lossy image compression standard originally released in
November 2005. The encoder consists of two parts—a
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CCSDS 122.0 makes use of a three-level two-dimensional discrete wavelet transform (DWT) using a
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tap filters, followed by a bit-plane encoder. It has some design commonalities with
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transform coder followed by a bitplane encoder on the similar lines as
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There is a known partial fix, but it is not mandatory.
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457:Consultative Committee for Space Data Systems
181:Consultative Committee for Space Data Systems
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320:Space Communications Protocol Specifications
414:Networking, interoperability and monitoring
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51:that use similar wavelet coding schemes.
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299:Spacecraft Monitoring & Control
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452:Lossless compression algorithms
283:Proximity-1 Space Link Protocol
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421:Service-oriented architecture
333:Telemetry modulation systems
140:Active CCSDS recommendations
324:Performance Enhancing Proxy
145:CCSDS 122.0-B-1 description
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25:discrete wavelet transform
425:Message Abstraction Layer
29:Embedded Zerotree Wavelet
278:Command Loss Timer Reset
271:Telemetry command uplink
223:Adaptive Entropy Coder
304:Beacon mode service
292:Telemetry downlink
249:Concatenated codes
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313:Telemetry general
244:Binary Golay code
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234:Error Correction
188:Data compression
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41:biorthogonal 9/7
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447:Space standards
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124:CCSDS 122.0-B-2
116:ISO 26868:2009
113:CCSDS 122.0-B-1
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121:September 2017
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110:November 2005
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31:by Shapiro.
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370:Frequencies
254:Turbo codes
59:Known flaws
17:CCSDS 122.0
441:Categories
262:LDPC codes
134:References
208:JPEG 2000
49:JPEG 2000
357:Proposed
322:(SCPS):
258:Proposed
213:122.0.B1
88:Versions
339:Current
240:Current
194:Images
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35:Encoder
396:K band
382:S band
377:X band
353:OQPSK
219:Data
99:CCSDS
95:date
21:CCSDS
19:is a
405:band
391:band
361:GMSK
348:QPSK
343:BPSK
203:JPEG
198:ICER
47:and
45:ICER
104:ISO
443::
427:)
423:(
403:a
401:K
389:u
387:K
173:e
166:t
159:v
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