ashishuthama

Show HN: Optical Design and Simulation in Matlab

Posted by ashishuthama on Sunday May 03, 2026 @07:01PM
from the show-hn dept.

https://www.mathworks.com/help/images/optical-system-design-and-analysis.html

Hi HN, We have been working an optical design and simulation library as a small start-up-ish team within MathWorks (makers of MATLAB and Simulink).I have seen a few optics and MATLAB posts here, so figured this would be a good place to show case this.A quick link to all the 'good stuff' is in a reddit post with pretty pictures and links: ...

( Read More... | no comments | on HN )

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Re:Pillow-SIMD – Fast, production-ready image resize for x86 on Friday July 07, 2017 @11:45AM (#14719280)

Another data point: MATLAB, glnxa64 AVX2, 12 core

>> maxNumCompThreads(1);

>> im = randi(255, [2560, 1600, 3],'uint8');

>> timeit(@()imresize(im,[320,200],'bilinear','Antialiasing',false))

ans =

    0.0083

>> timeit(@()imresize(im,[320,200],'bilinear'))

ans =

    0.0301

>> maxNumCompThreads(6);

>> timeit(@()imresize(im,[320,200],'bilinear','Antialiasing',false))

ans =

    0.0062

>> timeit(@()imresize(im,[320,200],'bilinear'))

ans =

    0.0113

Oh, missed that lanczos2 part:

>> maxNumCompThreads(1);

>> timeit(@()imresize(im,[320,200],'lanczos2','Antialiasing',false))

ans =

    0.0146

>> maxNumCompThreads(6);

>> timeit(@()imresize(im,[320,200],'lanczos2','Antialiasing',false))

ans =

    0.0049

Since MATLAB tries to do most of the computation in double precision, its harder to extract much from SIMD.