2018-02-08 03:22:04 -0600 | received badge | ● Supporter (source) |
2014-07-08 07:00:42 -0600 | commented question | exception in cvWaitKey function (libopencv_highgui library) StevenPuttemans: obviously I'm not using of cvWaitKey. I used of C++ wrapper and this wrapper converts data to C_API in runtime. It means, finally you run the cvWaitKey not waitKey. for more details, you can see the C++ wrapper of highgui in trunk. |
2014-07-06 10:00:07 -0600 | received badge | ● Editor (source) |
2014-07-06 09:59:14 -0600 | asked a question | exception in cvWaitKey function (libopencv_highgui library) Hi guys, I have opencv 2.4.9 in my mac. I installed it with homebrew package manager and with qt, c++11 and tbb dependencies ("Built from source with: --c++11, --with-qt, --with-tbb"). I don't know why from previous week, It throws an exception due to cvWaitKey and Qtcore when I want to show a video or an image. In this duration In never changed the libraries that may be corrupted opencv. I also installed the opencv and qt again but the problem has preserved. I'm confused, Can anyone help me ?? |
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2012-07-13 02:18:28 -0600 | received badge | ● Popular Question (source) |
2012-07-10 11:50:35 -0600 | asked a question | Is stereoRectifyUncalibrated efficient? hello everybody, I'm using of OpenCV 2.4 for rectification of images with findFundamentalMatrix and stereoRectifyUncalibrated. nearly 2 weeks ago, I saw a matlab code about rectify and I became interested to compare the result between them. at the first I thought that the result of opencv will be better than matlab but after several experiments, I found that the matlab code is better. but why? I searched in internet about them and I found that they use of two difference algorithm according by 2 papers. I think the opencv uses of "Theory and Practice of Projective Rectification" paper by "Richard I. Hartley" that you can found here. But the base of matlab algorithm code is a paper from "A. Fusiello, E. Trucco and A. Verri" with "Quasi-Euclidean Uncalibrated Epipolar Rectification" title that you can find here and the matlab source code is here. if you see the compRect.m file, you will notice that they use of non-linear least square method (Levenberg–Marquardt algorithm) to find the extrinsic parameters (rotation matrix and focal point). And my question: why opencv don't use of second method while the result of that is better than opencv. If somebody used of second method (matlab code) already, please explain his experience. |
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2012-07-08 17:33:30 -0600 | received badge | ● Student (source) |
2012-07-08 17:29:59 -0600 | asked a question | what is CV_FM_RANSAC_ONLY ? Hello everybody,
I'm working with opencv 2.4.2 and I find that after opencv 2.4.1, |