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| author | Even Rouault <even.rouault@spatialys.com> | 2017-06-20 17:56:25 +0200 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2017-06-20 18:01:34 +0200 |
| commit | fa55b52d19f39765d7f108d654a8f87035a5772f (patch) | |
| tree | dafaf2cdfe139ed1775c06e5c30b7f7ac409b92b /wrapping/java | |
| parent | 919ed5f8b8681aeae54ce3884b3ecca56cadc2e0 (diff) | |
Improve performance of inverse DWT 5x3 (#953)
* Use single-pass lifting inverse wavelet transform.
* For vertical pass, use SSE2 when available so as to process 8 columns
in parallel. This is the most beneficial improvement, since the
vertical pass involves a lot of cache trashing.
With the bench_dwt utility with default arguments (16383x16383 image),
time goes from 4.064 s to 1.212 s.
Diffstat (limited to 'wrapping/java')
0 files changed, 0 insertions, 0 deletions