Histogram of oriented gradients
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Histograms of oriented gradients 2014/08/22 ked
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description
A summary of HOG
Transcript of Histogram of oriented gradients
Histograms of oriented gradients
2014/08/22ked
Authors
Navneet Dalal and Bill Triggs
Authors
Navneet Dalal
A founder of Flutter (A gesture recognition startup company created in
2010)
Authors
Navneet Dalal
A founder of Flutter (A gesture recognition startup created in 2010)
Overview – HOG
Gradient
Cell & block
Cell 8 x 8 pixels
Block 2 x 2 cells 50% overlap for neibhbors
Example
For a 64 x 128 image
Quantization
Parameters – bins
Parameters – cell & blcok
Histogram normalization
Feature description
Compare to SIFT-- by authors
SVM weight
Thx.