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Alex Susu's profile - activity

2015-02-12 01:44:55 -0500 asked a question SparseMat - better design

Hello,

I would very much like to redesign the sparse matrix support in OpenCV. Is anybody else interested, knowledgeable on this issue?

More exactly, I need to support operations such as matrix multiplication, add, etc and they don't look to be supported. Therefore, I believe a better format for efficiency for sparse matrix representation should be CSR/CSC, not DOK (Dictionary of Keys), as it is right now. Also, I need to use in OpenCV operations on sparse matrices such as warpPerspective, etc which boil down to remap .

Thank you,

Alex

2015-02-12 01:44:55 -0500 answered a question Sparse Matrix solve

Hi, As far as it seems, OpenCV doesn't support linear systems solving for sparse matrices - does it support for dense matrices? But, there are other packages like UMFPACK (see http://faculty.cse.tamu.edu/davis/sui...) that can do this. Now, one can, in principle, easily integrate it with OpenCV. Best regards, Alex