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How to perform Sobel filter and HOG ?

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Najwa Samlan
Najwa Samlan el 13 de Oct. de 2019
Comentada: KALYAN ACHARJYA el 20 de Oct. de 2019
Hi. I need some help. I want to extract features from signature image by using HOG features. But before that, I need to
1)Calculate horizontal and vertical brightness values at each pixel. Then, get the horizontal and vertical gradient magnitude and direction.
2) At HOG stage, seperate blocks into 8x8 cell and each cell contain its own magnitude and direction
How can I code this ? Urgent, I really need help. Im stuck right now
a= getimage(handles.axes2)
[Gx,Gy]=imgradientxy(a,'Sobel')
[Gmag,Gdir]=imgradient(Gx,Gy)

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KALYAN ACHARJYA
KALYAN ACHARJYA el 13 de Oct. de 2019
Editada: KALYAN ACHARJYA el 13 de Oct. de 2019
How to perform Sobel filter and HOG ?
Read Input image, say "I"
Sobel, see detail here
result=edge(I);
HoG, see detail here
features_data=extractHOGFeatures(I)
Hope it helps!
  2 comentarios
Najwa Samlan
Najwa Samlan el 14 de Oct. de 2019
Ok I see it. But how can I combine to display both at the same axes ?
KALYAN ACHARJYA
KALYAN ACHARJYA el 20 de Oct. de 2019
You mean both images?? or look imsowpair

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