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How was the hogdescriptor::getDefaultPeopleDetector() trained

asked 2013-07-09 09:38:05 -0500

miat123 gravatar image

updated 2013-07-19 06:22:15 -0500

I am curious to know how the float detector[] in DefaultPeopleDetector() was trained. With this I mean what database,parameters,SVM were used. If somebody can identify the exact steps that would be very helpful.

Thank you.

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yea, and why has the getDaimlerPeopleDetector() a different size, and thus cannot be used ?

berak gravatar imageberak ( 2013-07-09 09:48:43 -0500 )edit
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Hi berak, i guess the size of the DaimlerPeopleDetector() is 48x96 since the training images from the Daimler Benchmark dataset has this size. The dataset and the paper where it is described can be found here: http://www.gavrila.net/Research/Pedestrian_Detection/Daimler_Pedestrian_Benchmark_D/Daimler_Mono_Ped__Detection_Be/daimler_mono_ped__detection_be.html

Siegfried gravatar imageSiegfried ( 2013-07-09 10:21:16 -0500 )edit
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thanks, siegfried, sorry, btw, for hijacking the question ;)

berak gravatar imageberak ( 2013-07-09 10:23:02 -0500 )edit

to use DaimlerPeopleDetector just set winsize to 48X96

Spas Hristov gravatar imageSpas Hristov ( 2013-07-12 01:58:26 -0500 )edit
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thanks, @Spas.

berak gravatar imageberak ( 2013-07-12 02:15:00 -0500 )edit

Has anybody figured it out ?

nexocv gravatar imagenexocv ( 2015-11-19 11:15:30 -0500 )edit

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answered 2013-07-12 05:30:58 -0500

I'm trying same thing, but without success... I'm using SVM lite, but when I try to detect someone I'm getting just 1 positive in the center of the image...

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I had the same thing. In my case, the reason was due to the fact that the computed weights were all equal to 0. I suggest you to check them out...

nexocv gravatar imagenexocv ( 2015-11-25 11:57:55 -0500 )edit
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Asked: 2013-07-09 09:38:05 -0500

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Last updated: Jul 19 '13