2013-11-05 08:00:52 -0600 | received badge | ● Student (source) |
2013-04-26 08:56:38 -0600 | commented answer | HOG descriptor (descripe shape and motion) the last thing i want to ask about that ,i must compute the gradient of graysacle image using function [grad, angleOfs] = hog.computeGradient(im); before i passe it to descriptors = hog.compute(grad, 'Locations', {keypoints.pt}); or use image directly and passes it to hog.compute(image) function |
2013-04-26 07:37:10 -0600 | commented answer | HOG descriptor (descripe shape and motion) thanks for ur reply but i know the difference between but i want to implement HoF descriptor using implemented code of hog descriptor function but with different input parameter so i will passes the gradient of optical flow (result from 2 consective frame)to cv.hogdescriptor fuction (is this true or not ) as i mentioned in last line of my code . |
2013-04-26 06:39:13 -0600 | asked a question | HOG descriptor (descripe shape and motion) can anyone help me please,i use hog descriptor to descripe detected interest poins , hog descriptor steps:
How can i update it to compute HOF (histogram of optical flow)?? As the ouput of optical flow is gradient magnitudes from optical flow fields , so really i compute gradient for optical flow, so i don't need to compute gradient again in embeded code of HOG first shape decriptor second motion descriptor |