CCSDS 122.0-B-1
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CCSDS 122.0 is a CCSDS lossless to lossy image compression standard originally released in November 2005. The encoder consists of two parts—a discrete wavelet transform transform coder followed by a bitplane encoder on the similar lines as Embedded Zerotree Wavelet by Shapiro.
CCSDS 122.0 makes use of a three-level two-dimensional discrete wavelet transform (DWT) using a biorthogonal 9/7 tap filters, followed by a bit-plane encoder. It has some design commonalities with ICER and JPEG 2000 that use similar wavelet coding schemes.
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.