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CCSDS 122.0-B-1 is a CCSDS Lossless to Lossy Image compression standard released on November 2005. This CCSDS standard is a discrete wavelet transform (DWT) transform coder followed by a Rice encoder & a Bitplane encoder on the similar lines as Embedded Zerotree Wavelet by Shapiro. ==Encoder== CCSDS 122.0-B-1 is a ''3 Level 2D-DWT'' using a biorthogonal 9/7 (LPF/HPF) tap filters, followed by a bit-plane encoder. It has some design commonalities with ICER and JPEG2000 that use similar wavelet coding schemes. The encoder can use either floating point or Integer DWT. Integer DWT is the lossless coding scheme, while the floating point DWT contributes to the lossy scheme. Lesser known features 9/7 INTEGER TRANSFORM *An alternative transform in this Recommended Standard is a non-linear approximation to a 9/7 DWT. This extra available non-linear transform can be used to achieve lossless compression. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「CCSDS 122.0-B-1」の詳細全文を読む スポンサード リンク
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