matrix buffer aliasing problem in Python wrappers (Bug #25)

Added by Vadim Pisarevsky over 15 years ago. Updated about 15 years ago.

Status:Done Start date:
Priority:High Due date:
Assignee:James Bowman % Done:

0%
Category:python bindings
Target version:-
Affected version: Operating System:
Difficulty: HW Platform:
Pull request:

Description

While debugging test_MixChannels I added some sanity checks, and it looks like content of a matrix (source_mr0) is somehow changed after another matrix (dest_m[i]) is modified.

To reproduce the problem, run "python test.py test_MixChannels"

Associated revisions

Revision 429e5367
Added by Andrey Kamaev over 12 years ago

Merge pull request #25 from sergiud/master

History

#1
Updated by James Bowman about 15 years ago

r2411 is partial fix: instead of using Python strings for image storage, now use Buffer objects. This has the nice property of allowing the bindings to use the OpenCV-allocated image memory, so there is now no copy on image creation.

Need to do same for IplImage and CvMatND.

#2
Updated by James Bowman about 15 years ago

OK fixes done.
Tests now pass.

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

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