2014-02-25 22:10:22 -0600 | answered a question | Load cascade classifier from memory? I have put an valid implementation about this on github. see https://github.com/pengx17/facedetect/blob/master/src/facedetect.cpp |
2013-04-12 15:05:51 -0600 | received badge | ● Nice Answer (source) |
2013-04-11 22:44:03 -0600 | received badge | ● Critic (source) |
2013-04-09 22:14:36 -0600 | commented question | Executable never terminates when using OpenCL functions I guess this may be due to memory leak bug of the ocl module. |
2013-04-03 02:37:23 -0600 | answered a question | OCL error - cl_khr_fp64 Hi, this is a known bug and it should have been fixed now. Can you try it again? |
2013-03-25 03:59:46 -0600 | received badge | ● Good Answer (source) |
2013-03-24 06:47:08 -0600 | received badge | ● Nice Answer (source) |
2012-08-20 00:44:43 -0600 | received badge | ● Editor (source) |
2012-08-20 00:42:54 -0600 | answered a question | findChessBoardCorners work on some images but fail in others I think findChessBoardCorners function is dedicated for camera calibration and not suitable for finding cross corners on cylindrical chess pattern. In the document description it says:
Maybe you need to think about another method for your problem. |
2012-08-20 00:28:49 -0600 | commented answer | Opencl support (bm,sgbm etc) I just pulled the latest trunk repository and built with mingw-32. I tried to run the ocl test cases, but there were no problem at all. |
2012-08-19 20:34:25 -0600 | answered a question | how to download from code.opencv git://code.opencv.org/opencv.git and you can find a mirror at github: |
2012-08-19 03:05:30 -0600 | commented answer | Opencl support (bm,sgbm etc) I am using 64 bit Win 7 as well but developing with Visual Studio 2010 at 32 bit. Can you try visual studio compiler instead of MinGW to see if it works? |
2012-08-18 22:30:19 -0600 | received badge | ● Supporter (source) |
2012-08-18 22:27:27 -0600 | received badge | ● Autobiographer |
2012-08-18 14:32:35 -0600 | received badge | ● Teacher (source) |
2012-08-18 11:05:25 -0600 | commented answer | Opencl support (bm,sgbm etc) Oh I never tried to use MinGW compiler on Windows. I did not know if there are OpenCV OCL module developers tried to compile it with MinGW, but I found a thread regarding a similar crashing problem with you on AMD support forum. http://devgurus.amd.com/message/1164914#1164914 I will ask the QA team to compile OCL module with MinGW on Windows later. Hopefully I will get the feedback sometime next week. |
2012-08-18 04:23:47 -0600 | commented answer | Opencl support (bm,sgbm etc) What's your AMD APP SDK version ? And make sure link correct OpenCL.lib file. |
2012-08-18 00:52:19 -0600 | commented question | cv::FileStorage for custom Types Problem I am not sure if the code you pasted above is correct or not, but write and read functions in the code snippet you provided are for instances of class BpcaParams not Alg_Params. |
2012-08-18 00:48:50 -0600 | answered a question | Opencl support (bm,sgbm etc) Using ocl module is pretty much alike using gpu module. To use OCL module, you must call getDevice() once before call any of the ocl module functions. It is like this: This function will detect if there is any valid GPU devices in all OpenCL enabled platforms on your machine; particularly, the ocl module should have best compatibility with an AMD graphic card. Most ocl module functions require input matrices of type oclMat. oclMat is similar with Mat, but it encapsulates some OpenCL device's buffer object (cl_mem) and controls buffer release, transferring, etc. To convert a Mat to an oclMat object, simply call Alternatively, you could explicitly call oclMat then can be fed into ocl module functions once the memory data is uploaded to opencl device's memory. To access the oclMat's data, you need to download the gpu buffer data into host memory. Similar with upload operations, you could either call or Normally you do not need to worry about memory releasing. oclMat will deconstruct its encapsulated cl_mem buffer once they are not referenced any more. To sum up,, the usage of the OCL module is simply:
There is some sample ocl module programs provided in the trunk repository. You could refer to them as a start. BTW, if you are not familiar with OpenCL, I recommend you to read some basics about OpenCL's basics before include OpenCL into your project. |
2012-08-17 22:43:39 -0600 | answered a question | cv::FileStorage for custom Types Problem I am not sure if the code you pasted above is correct or not, but write and read functions in the code snippet you provided are for instances of class BpcaParams not Alg_Params. |