Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Subtile decoding: only apply IDWT on areas that participate to the window of interest #1001

Merged
merged 7 commits into from
Aug 21, 2017

Conversation

rouault
Copy link
Collaborator

@rouault rouault commented Aug 20, 2017

Continuation of #990 (although in theory it could be applied independantly, but in practice stage2 only makes sense with stage1).

This lowers 'bin/opj_decompress -i ../MAPA.jp2 -o out.tif -d 0,0,256,256' down to 0.860s (IDWT 5x3 case)

Note: for IDWT 5x3 the function that does subtile decoding doesn't use the recent SSE2/AVX2 optimizations

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

1 participant