SVD::MODIFY_A flag does nothing (Bug #1441)

Added by Junichi Ido over 13 years ago. Updated almost 13 years ago.

Status:Cancelled Start date:
Priority:High Due date:
Assignee:Vadim Pisarevsky % Done:

0%
Category:core
Target version:2.4.0
Affected version: Operating System:
Difficulty: HW Platform:
Pull request:

Description

"SVD::MODIFY_A" flag to modify decomposed matrix does not work properly on OpenCV 2.3 (or later) in which Lapack has not been used in OpenCV and new Jacobi SVD algorithm has been added.

Associated revisions

Revision e3b92a95
Added by Roman Donchenko over 11 years ago

Merge pull request #1441 from look4pritam:prism-stereo

History

#1
Updated by Vadim Pisarevsky over 13 years ago

I do not see a problem if matrix is not modified. On large matrices the processing time dominates the copying time by a lot, on small matrices the temporary buffer is allocated on stack, so it's also not a problem. In fact, on small matrices the new version is much faster than the Lapack-based one.

  • Status changed from Open to Done
  • (deleted custom field) set to wontfix

#2
Updated by Andrey Kamaev almost 13 years ago

  • Status changed from Done to Cancelled
  • Target version set to 2.4.0

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