Adaptive coding: Difference between revisions

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[[Image:Damaged_N00153918.jpg‎|thumb|center|450px|The Cassini camera was pointing toward DIONE at a distance of approximately 548,210 kilometers. The image was taken using the CL1 and CL2 filters on May 17, 2010.]]
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====Cassini Lossless Compression====
* Both converted (8-bit) and unconverted (12-bit) data can be losslessly compressed. The Cassini hardware data compressor uses Huffman encoding.
* Each compressed image can be reconstructed on the ground with no loss to the information content of the image, provided the image entropy does not exceed the threshold where 2:1 compression is reached.
 
* Due to camera problems and the need to reduce file size, there is a slight modification to the image coding scheme so that each compressed line is effectively bandwidth limited on the number of bits available to encode it.
Each compressed image can be reconstructed on the ground with no loss to the information content of the image, provided the image entropy does not exceed the threshold where 2:1 compression is reached.
 
 
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