Niblack's adaptive thresholding (Feature #4024)


Added by Sancho McCann over 10 years ago. Updated over 9 years ago.


Status:Open Start date:2014-11-24
Priority:Low Due date:
Assignee:Sancho McCann % Done:

0%

Category:imgproc, video
Target version:3.0 Estimated time:6.00 hours
Difficulty:Medium Pull request:https://github.com/Itseez/opencv_contrib/pull/181

Description

I'm interested in including Niblack's adaptive thresholding in OpenCV.

Currently, the adaptive threshold is based on the mean within a block plus an offset that is a constant parameter.

Niblack's threshold is based on the mean within a block plus an offset that is a constant parameter in [0,1] times the standard deviation of the pixel intensities within the block.


Associated revisions

Revision 2fc92448
Added by Vadim Pisarevsky almost 10 years ago

Merge pull request #4024 from jet47:cuda-minmaxloc-one-row-input

History

Updated by Ilya Lavrenov over 10 years ago

Hi Sancho,
Could you implement this type of adaptive thresholding? And send us an appropriate pull request.
Thanks.

  • Assignee changed from Vadim Pisarevsky to Sancho McCann
  • Status changed from New to Open
  • Difficulty changed from Easy to Medium
  • Target version changed from 2.4.11 to 3.0

Updated by Steven Puttemans about 10 years ago

  • Pull request set to https://github.com/Itseez/opencv_contrib/pull/181

Updated by Maksim Shabunin over 9 years ago

Issue has been transferred to GitHub: https://github.com/Itseez/opencv/issues/4868

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