User:Andy1978: Difference between revisions
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m (→Core: strike FFTW multithreading) |
m (added snippets section (chain matrix multiplication)) |
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First post on mailing list in 12.01.2013 http://octave.1599824.n4.nabble.com/corner-cornermetric-equivalent-in-octave-td4648802.html | First post on mailing list in 12.01.2013 http://octave.1599824.n4.nabble.com/corner-cornermetric-equivalent-in-octave-td4648802.html | ||
== Snippets == | |||
=== chain matrix multiplication === | |||
a=[1 2; 3 4]; | |||
b=[4 2; 8 1]; | |||
c=[2 3; 1 -1]; | |||
m=cat(3,a,b,c); | |||
s=cell(3,1); | |||
s{1}=a;s{2}=b; s{3}=c; | |||
a*b*c | |||
s{1}*s{2}*s{3} | |||
mtimes(num2cell(m,[1,2]){:}) | |||
mtimes(s{:}) | |||
== brainstorming == | == brainstorming == | ||
* something like autobuilder for octave would be cool. Jordi mentioned http://hydra.nixos.org/jobset/gnu/octave-default | * something like autobuilder for octave would be cool. Jordi mentioned http://hydra.nixos.org/jobset/gnu/octave-default | ||
* perhaps http://www.phoronix-test-suite.com/? | * perhaps http://www.phoronix-test-suite.com/? | ||
Revision as of 06:24, 2 May 2013
ToDo
Core
- fix imread bug with opaque images, see https://savannah.gnu.org/bugs/?func=detailitem&item_id=36820
- remove removed but still referenced function in "seealso" blocks
FFTW multithreaded https://savannah.gnu.org/patch/?7922
Forge
image
- implement SURF, integralImage is cumsum(cumsum(a,1),2)
corner/cornermetric, harris
First post on mailing list in 12.01.2013 http://octave.1599824.n4.nabble.com/corner-cornermetric-equivalent-in-octave-td4648802.html
Snippets
chain matrix multiplication
a=[1 2; 3 4];
b=[4 2; 8 1];
c=[2 3; 1 -1];
m=cat(3,a,b,c);
s=cell(3,1);
s{1}=a;s{2}=b; s{3}=c;
a*b*c
s{1}*s{2}*s{3}
mtimes(num2cell(m,[1,2]){:})
mtimes(s{:})
brainstorming
- something like autobuilder for octave would be cool. Jordi mentioned http://hydra.nixos.org/jobset/gnu/octave-default
- perhaps http://www.phoronix-test-suite.com/?