Hello,
I would like to know how many samples are necessary or usefull to train the CascadeClassifier with HOG Features for Pedastrian detection.
I tried to find out about the 'hogcascade_pedestrians.xml' in 'data/hogcascades' but didn't find any usefull information. Not even in the commit message.
Thanks.
You should read this paper: Histograms of Oriented Gradients for Human Detection, Navneet Dalal and Bill Triggs, CVPR 2005, PDF It explains almost everything on how to use HOG and linear SVM for pedestrian detection. It uses two dataset (MIT and INRIA) and specifies the number of samples used. Using the same parameters, you should be able to train a good pedestrian detector.
[ Additional information ]
HOG cascade is not supported in OpenCV 3.0 ( see here ), instead you can use HOGDescriptor
OpenCV 3.x have a sample application to train custom HOG+SVM detector train_HOG.cpp
Asked: 2013-06-24 03:27:13 -0600
Seen: 3,648 times
Last updated: Jan 01 '16
I would like to add to my question: If somebody knows with witch data 'hogcascade_pedestrians.xml' was trained, it would be nice to know.