MSER detector is missing keypoints on binary images (Bug #756)

Added by Ilya Lysenkov over 14 years ago. Updated almost 10 years ago.

Status:Done Start date:
Priority:Normal Due date:
Assignee:- % Done:

0%
Category:features2d
Target version:3.0
Affected version:branch 'master' (3.0-dev) Operating System:Any
Difficulty: HW Platform:Any
Pull request:

Description

MSER is working very strangely on binary images. For example it can miss very stable regions. I've attached an image where a left region is detected and a right region is missed by mser_sample.

sample.png (243 Bytes) Ilya Lysenkov, 2010-12-11 06:43 pm

Associated revisions

Revision 6f288615
Added by Andrey Kamaev almost 12 years ago

Merge pull request #756 from taka-no-me:libavcodec53.25.0

History

#1
Updated by Liu Liu over 14 years ago

I will look into the problem next week. My guess is, the provided sample image is an edge case about how derivative approximated in MSER implementation.

#2
Updated by Ilya Lysenkov over 14 years ago

Fine! Thank you for the quick response.

#3
Updated by Maria Dimashova almost 14 years ago

Hello, liuliu.

Have you looked into the problem? Judging by the sample image there is really a bug in MSER implementation.

#4
Updated by Alexander Shishkov almost 13 years ago

  • Target version deleted ()

#5
Updated by Alexander Shishkov almost 13 years ago

  • Assignee deleted (Liu Liu)

#6
Updated by Vadim Pisarevsky almost 13 years ago

lowering priority of the bug, since there are not many MSER users out there

  • Priority changed from High to Normal

#7
Updated by Alexander Shishkov almost 13 years ago

  • Target version deleted ()

#8
Updated by Vadim Pisarevsky almost 10 years ago

finally!!! fixed in https://github.com/Itseez/opencv/pull/4025. That required almost complete rewrite of MSER

  • Target version set to 3.0
  • HW Platform set to Any
  • Operating System set to Any
  • Affected version set to branch 'master' (3.0-dev)

#9
Updated by Vadim Pisarevsky almost 10 years ago

  • Status changed from Open to Done

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