How do I merge multiple bounding boxes that overlap into one bigger bounding box?

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I am trying to detect text from an image (Magic Card) and I managed to create bounding boxes for each of the the candidate characters. However, I would like to merge all overlapping boxes as one larger box for optical character recognition. Is there a way to do this? Below is an image of the bounding boxes I currently have:

Answers (3)

Nut on 1 Jul 2016

Leonard Yeo
Leonard Yeo on 15 Nov 2015
  1 Comment
Max on 17 Nov 2015
This doesn't quite help. I actually already know which boxes overlap but have not figured out exactly a way to connect the individual boxes.

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thang anh
thang anh on 2 May 2018
thank you!now I want to show character major number than the six-day Africa how do you DO! > thanks YOU

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