How to use HOG (Histogram of Oriented Gradients) visualisation?

Question

Aravind Chakravarti 2018-4-2

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https://ww2.mathworks.cn/matlabcentral/answers/392055-how-to-use-hog-histogram-of-oriented-gradients-visualisation

评论： kalyan s 2021-7-8

Hi,

I am implementing HOG myself (not using extractHOGFeatures) for my coursework. I could able to implement HOG completely by referring Dalal paper. The hardest part is visualisation of the extracted features. Actually visualisation is tougher than creation of HOG iteself!

I tried http://www.vlfeat.org/overview/hog.html, but it seems the implementation of HOG is little different from MATLAB.

Does any one know how to visualise HOG once it is manually extracted? It will be a great help.

Thanks in advance!

Regards, Aravind

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Hategan Paula-Ioana 2021-6-25

Hi,

can you help me with the code for HOG?

Because I'm struggling now to work on it and I have some problems.

Could you post the code here?

thank you!

kalyan s 2021-7-8

Hi,I have implemented HOG by myself without any builtin function.I got HOG feature vector (3780X1) as output,but i am unable to visualize the HOG image with the feature vector.If you have got a way to do it,kindly help me

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Answer 1

Abhishek Ballaney 2018-4-6

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https://ww2.mathworks.cn/matlabcentral/answers/392055-how-to-use-hog-histogram-of-oriented-gradients-visualisation#answer_313719

https://in.mathworks.com/help/vision/ref/extracthogfeatures.html

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Aravind Chakravarti 2018-4-6

Thanks. But I am implementing manually. I don't want to use built-in extractHogFeatures I have already implemented HOG but I needed some routine which can give visualization

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