HOG

[Jean K]

Hello,

I am new to the scikit-image, and interested in using HOG.
However, the one which is implemented doesn't seem to give as good results 
as expected.

As a possible explanation I think mainly of 2 reasons:
1) the way of computing the gradients ( if I'm not mistaking, you use a 
[-1, 1] filter when they use a centered one [-1, 0, 1].
2) They use tri-linear interpolation when here the you seem to use hard 
binning.

Does this make sense or am I missing something?

Also, I tried to write another version, trying to stick as much as possible 
to Dalal&Triggs version, although I don't really know how to assess the 
results it produces. Would that be of interest?

Cheers,

Jean



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