[gdal-dev] Default progression order in JP2OpenJPEG driver

Jukka Rahkonen jukka.rahkonen at maanmittauslaitos.fi
Thu Mar 5 22:07:12 PST 2015


Even Rouault <even.rouault <at> spatialys.com> writes:


> When reading with an efficient JPEG2000 decoder, for the same block size, I 
> can't see any really noticeable difference between the 3 profiles, either
when 
> reading a single pixel, random regions at full resolution, or a downsampled 
> region. I presume the difference between the organizations would appear in 
> network streaming contexts rather than with an efficient storage and reader.

Now once you say it I remember why I had a feeling of LRCP being so poor. It
was based an my tests I made a long time ago about serving images for
on-screen browsing through JPIP by using a dial-up modem and speed throttled
to 4 kbps. Very different use case indeed.

-Jukka-



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