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2014-07-27 01:10:34 -0500 asked a question HOG feature failure

Yesterday I got this question asked at an interview. The interviewer said that one of his friends set up a video camera on the ceiling of his office looking down directly to the floor. He tried to detect and count humans using HoG features, but it failed. Why did it fail? I am studying HoG features but I am not able to understand what the answer should be. Please help.

2013-08-20 12:11:54 -0500 asked a question Depth image stitching

Hello,

I am getting two images with the corresponding depth images from a kinect. I am stitching the two RGB images with the stitcher class. Now I want to stitch the depth images using the same transformation, but I am not sure how to extract the transformation matrices from the stitcher class and use the same to warp the depth images. Any help with a small code fragment will be helpful, thanks.