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2017-07-11 21:03:20 -0600 asked a question How to implement a opencv's insertObjectAnnotation()?

The matlab's insertObjectAnnotation() in computer vision toolbox inserts a rectangle with a label into the image mostly used in object detection, how to implement such a function in OpenCV.

Here is a example image:image description

2016-08-15 21:51:34 -0600 received badge  Supporter (source)
2016-08-03 04:23:42 -0600 commented question get hierarchy of extremal regions with MSER/ERFilter

How do you think that MSER discards the hierarchy of regions?