SEG-Y files need special compression because they don't compress well using gzip and the like. The code is cross-platform C++ using nothing else than standard system libraries. This is a spin-off from the OpendTect project (http://opendtect.org).
- Compresses SEG-Y files, especially floating-point formats
- Detects and repairs spikes. This is necessary to keep the float compression dependable.
SEG-Y is one of the big disasters that some of us have to cope with, in life. I don't think segyzip can help against that, still you can look around in the code and get the beginning of an idea of how SEG-Y needs to be treated. If you really need to read or write SEG-Y, your troubles have just started with digesting this code ...