Histograms of oriented gradients implementation

[thespecialone]

Hello,

I wonder if I can implement HOG with labview and vision assistant or vision builder ?

If yes, can anyone guide me ?( what are the steps to follow etc..)

I need that because I am trying to build a human recognition VI

THANK YOU

[Klemen]

Hello,

there are quite a few papers regarding the HOG human detection.

I have only used HOG in Matlab some time ago, but for business card classification and not human classification.

I can suggest the following:

1. take a look at this post:

http://forums.ni.com/t5/LabVIEW/Histogram-of-Oriented-Gradients-HoG-weighted-histograms/td-p/1973807

They claim that they successfully implemented HOG algorithm.

2. use OpenCV since they have HOG already implemented for human detection. Find some example code and modify it and use it as a dll in labview.

http://docs.opencv.org/modules/gpu/doc/object_detection.html

Best regards,

K

[Klemen]

...or implement it yourself:

http://www.cs.bilkent.edu.tr/~cansin/projects/cs554-vision/pedestrian-detection/pedestrian-detection...

[thespecialone]

thanks for replying..i don't know anything about opencv so i just need to know if it is a software or a feature in a software etc..? just to be able to get it.

thank you

[Klemen]

Hello,

yesterday i have implemented the dll HOG code in labview, based on opencv HOGDescriptor class. i will post the source code today here:

https://decibel.ni.com/content/blogs/kl3m3n


Best regards,
K

[thespecialone]

Dear Klemen,

Apparently this is perfect thanks a lot.But the vi is not working because I don't have the opencv software.Do I need any other software like Microsoft visual studio for example ? I told I don't know anything about opencv that's why I am confused .

Thanks for your continuous help.

[Klemen]

Hello,

the code was compiled with Visual Studio 2010 x86 so install OpenCV and add

"C:\Program Files (x86)\OpenCV 2.4.5\opencv\build\x86\vc10\bin"

(this is for OpenCV 2.4.5 build)

to system path.

Best regards,

K

[thespecialone]

hello, i took the files posted on your blog (vi,dll file, c++ code) but when i am trying to run the vi some kind of error appears(please see the attachment) any idea?

[Klemen]

Hello,

please attach the error.

Best regards,

K

[thespecialone]