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liboyin / img-classify

Household Object Recognition Challenge
GNU General Public License v2.0
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Introduce HOG feature #4

Closed liboyin closed 9 years ago

liboyin commented 9 years ago

http://stackoverflow.com/questions/17159885/histogram-of-oriented-gradients-object-detection http://www.mathworks.com/matlabcentral/fileexchange/28689-hog-descriptor-for-matlab/content/HOG.m

liboyin commented 9 years ago

Manab has tried HOG features with kNN classifier. The accuracy is around 40%. This is both good news and bad news. HOG is a local feature and is not invariant to rotation or scale. 40% accuracy is actually rather good for such a feature. It may be useful in the future.