qbeart's profile - activity

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2014-02-13 01:59:32 -0600	asked a question	Poor OpenCL performance Hi, I am trying to perform the detectMultiScale function on GPU using OpenCL module. It is supposed to run faster but it is not. In fact it is even 3-4 times slower than the CPU implementation. I have tested it on both Intel HD Graphics 4000 and NVidia GT650M, and I got the same result. I want to know if anyone ran into the same problem, and if there is a solution. OpenCV version : 2.4.7.2
2013-07-30 02:58:32 -0600	asked a question	analysis of the vertical and horizontal histogram Hi,I ran into the term "analysis of the vertical and horizontal histogram" explained as "showing the intensity differences between successive rows, pixel-wise". I didn't get the point here. I wonder if there is an OpenCV implementation for this operation or should I implement it by myself? Any clue will help. Thanks.