There is also a small PHP demo linked from the LinuxDevices article ( http://www.linuxfordevices.com/c/a/Linux-For-Devices-Articles/Elphel-camera-under-the-hood-from-Verilog-to-PHP/) - http://community.elphel.com/jp4/jp4demo.php . It explains JP4 and there is source code there too.
Andrey On Tue, Nov 17, 2009 at 1:41 AM, Sebastian Pichelhofer < [email protected]> wrote: > JP4 rearranges same color pixels from the bayer pattern in 8x8 pixel blocks > to reduce high image frequencies that a pure bayer pattern would have > (better for JPEG compressor as JPEG basically reduces the most detailed > information = highest image frequency first). > > I am afraid there is no other code than the FPGA that shows how to create > JP4. > > Are you building a camera and want to compress the images in the camera? > > Regards Sebastian > > Jay Thompson wrote: > >> Hello, >> >> I've recently come across the Elphel project as I have been working on raw >> digital imagery / video workflows. I have a sequence of raw frames from a >> KAI-2093 that I would like to attempt to process with the Elphel's jp4 / >> avisynth workflow as well as experiment with a number of 'on the fly' >> demosaicers. I am wondering if there is a general implementation of the jp4 >> compressor? I have seen the FPGA code but I cannot do anything with it. >> >> Thank you, >> jt >> >> _______________________________________________ >> Support-list mailing list >> [email protected] >> http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com >> > > > _______________________________________________ > Support-list mailing list > [email protected] > http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com >
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