Histogram of Oriented Gradients

asked 2017-09-05 01:53:54 -0600

peter_cz
11 ●4 ●7

Hello,

I'm looking for an example of Histogram of Oriented Gradients, is it implented within OpenCV (C/C++ implemetaion)?

Thank you.

answered 2017-09-05 02:12:35 -0600

StevenPuttemans

20029 ●16 ●82 ●207 http://stevenputtemans...

Take a look at the train HOG sample, which basically takes samples, makes a HOG description of them and then trains an SVM, following the Dallal and Triggs approach.

If you only want the HOG computation, you can easily extract it from that sample!

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also: https://github.com/opencv/opencv/blob...

berak ( 2017-09-05 02:41:34 -0600 )edit

Hi Steven, can I advice where to extract from?

peter_cz ( 2017-09-05 04:32:00 -0600 )edit

also see learnopencv.com

sturkmen ( 2017-09-05 06:16:19 -0600 )edit

What do you mean with where to extract from? You can only apply a histogram of oriented gradients on an image patch...

StevenPuttemans ( 2017-09-05 06:37:23 -0600 )edit

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