2020-03-26 01:24:50 -0600 | received badge | ● Popular Question (source) |
2019-05-23 04:55:43 -0600 | received badge | ● Taxonomist |
2019-03-12 11:37:05 -0600 | received badge | ● Notable Question (source) |
2017-12-09 04:30:45 -0600 | received badge | ● Popular Question (source) |
2017-09-22 13:55:01 -0600 | received badge | ● Famous Question (source) |
2016-08-10 08:36:36 -0600 | received badge | ● Notable Question (source) |
2016-04-07 06:35:29 -0600 | received badge | ● Teacher (source) |
2016-01-25 08:11:04 -0600 | received badge | ● Popular Question (source) |
2015-04-27 04:32:26 -0600 | commented question | OpenCV3.0 WINDOWS_NORMAL flag not working With QT it is working fine. But with vtk not. |
2015-04-26 14:48:16 -0600 | asked a question | Error on cv::cuda::DescriptorMatcher::knnMatch While trying to use the knnMatch function Any idea what it means? I am using a very simple code like the following: Where |
2015-04-23 10:43:59 -0600 | asked a question | Why cv::cuda::DescriptorMatcher not a subclass of cv::DescriptorMatcher They both provide the same interface. In my opinion Because of this people cannot use the advantage of dynamic polymerphysm (will have to use ifs to distinguish, care and call objects of different types). A beautiful analogy would be the class |
2015-04-22 09:42:39 -0600 | asked a question | Python binding for opencv 3.0, cv2.so link issue After recently updating the code of OpenCV 3.0 trunk, I got the following error while trying to import cv2 in python. So cv2.so actually exist, but some other library it is dependent on (with the symbol _ZTIN2cv12_OutputArrayE) is missing! This happened just after I pulled the latest code; it was working with the earlier version of 3.0 trunk. |
2015-04-22 04:42:16 -0600 | commented question | OpenCV3.0 WINDOWS_NORMAL flag not working It was working before, but does not work after the latest pull yesterday. I'll try compiling everything with OPENGL and share the info. |
2015-04-22 03:52:44 -0600 | commented question | OpenCV3.0 WINDOWS_NORMAL flag not working Hi break, any updates or comments? |
2015-04-21 09:52:08 -0600 | commented question | OpenCV3.0 WINDOWS_NORMAL flag not working @break, Ubuntu 14.04. I am not sure what gui toolkit is. Do you mean the GUI framework highgui uses in the background? I am not sure what it uses (how can I know?). But the cmake cache shows WITH_VTK to be true. And WITH_QT and WITH_OPENGL false. |
2015-04-21 09:03:25 -0600 | asked a question | OpenCV3.0 WINDOWS_NORMAL flag not working Hi, I just pulled the latest code from the trunk and now I observe that all the windows formed by cv::namedwindow is not resizable and is huge (probably as big as the input image which is huge as well). Following is the simple code for the reference: What is wrong? |
2015-04-20 14:13:04 -0600 | commented question | ‘AlgorithmInfo’ does not name a type while building opencv_contrib It makes so much of sense! I could build on latest opencv_contrib module. Thank you! |
2015-04-20 08:33:51 -0600 | asked a question | ‘AlgorithmInfo’ does not name a type while building opencv_contrib I am getting the following error while trying to build opencv with the contrib module The code is latest and pulled just now.
After adding a forward declaration EDIT: After grepping AlgorithmInfo I found that there is no defination of AlgorithmInfo at all! EDIT2: Comparing to the previous version of code I found AlgorithmInfo is defined at opencv2/core.hpp line 3006. But in the latest code, it is not present there at all! |
2015-04-17 10:16:27 -0600 | commented question | Behavior of CommandLineParser::has() ah, known issue again. Should be a simple fix; how much time does it take to fix that? |
2015-04-17 07:43:20 -0600 | asked a question | Behavior of CommandLineParser::has() I suppose CommandLineParser::has("something") should be true when the command line has When run with the input I was expecting it to be |
2015-04-15 03:13:53 -0600 | asked a question | Non-planar camera calibration input Why is it mandatory to provide an initial guess when calibrating from a non-planer rig? Does the initial guess affect the output result considerably? Why (such difference between planer and non-planar case)? I am trying to calibrate a camera using some 3D->2D correspondences (need not be non-planar) I found in some way. But the results I am getting is really bad with very high reprojection error. Any one successfully used opencv to calibrate their camera using non-planar rig and using something other than their provided chessboard methods? Thanks! |
2015-04-02 10:10:06 -0600 | received badge | ● Enthusiast |
2015-03-30 12:31:51 -0600 | asked a question | input arguments of python's cv2.calibrateCamera I get the following error when I try to calibrate camera using cv2.calibrateCamera: I initially had nx3 and nx2 array for pts3d and pts2d. I then tried to reshape pts3d and pts2d in the following form as the function takes vectors of vector point3d (and correspondingly pts2d) as input: [1 x n x 3] and [1 x n x 2] [k x n' x 3] and [k x n' x 3], where k is some random value [1 x n x 1 x 3] and [1 x n x 1 x 2] nothing works and it always gives the same error. I saw the code sample code of cameraclibration provided which runs fine, and their input is of [k x n x 3]. I really don't know what is wrong with my implementation. Following is my code to be precise: the error happens at the time of the function call. It would be nice to know what can be wrong here. |
2015-02-26 08:50:02 -0600 | received badge | ● Supporter (source) |
2015-02-16 18:15:47 -0600 | received badge | ● Scholar (source) |
2015-02-16 18:11:22 -0600 | commented question | Opencv 3.0 dev python documentation @StevenPuttemans, I can definitely post all the inconsistencies I find, and I will; but I believe that updating documentation/tutorial should be a part of the coding process. I understand that OpenCV is community dependent; most of the opensource libraries are. But when you are migrating heavily used classes over different modules, changing its signatures, you got to at least look at the repercussion of the changes in the pipeline and update tutorial. When I was an active developer at the library PCL, our strategy was to update the corresponding documentation and tutorials for any change you do to an existing class. The same should be done for OpenCV as well. |
2015-02-16 08:02:18 -0600 | commented question | Persisting data between Opencv-Python and Opencv-C++ @berak Ah, so its a GSoC idea. It actually should not take much time, isn't it? |
2015-02-16 06:47:21 -0600 | received badge | ● Self-Learner (source) |
2015-02-16 04:55:04 -0600 | received badge | ● Editor (source) |
2015-02-16 04:44:33 -0600 | received badge | ● Student (source) |
2015-02-16 04:41:15 -0600 | asked a question | Persisting data between Opencv-Python and Opencv-C++ Hello, is there any simple interface which can be used for persisting data between Opencv-Python and Opencv-C++? That is I want to write some data (metrices) from Opencv-Python and read it later with Opencv-C++ (and vice versa). One way is to convert numpy arrays to cv::Mat manually which in my opinion is ugly. Also, I did not get any simple solution for doing that in the latest opencv. All the available solution I found dates back to 3 years which uses modules like cv and functions like cv.fromarray which are not available in the latest version (?). |
2015-02-16 04:35:59 -0600 | asked a question | Opencv 3.0 dev python documentation Hi, After using the python binding for Opencv 3, I found quite a lot of features have been changed. For example the new drawKeypoints function is: see the extra mandatory outImage argument (which does not make any sense) ? These extra changes are not really documented in the Opencv 3 python documentation. Other than that the documentation in general is highly inconstant (for example they still use |
2015-02-16 04:21:11 -0600 | commented question | cannot import xfeatures2d in OpenCV 3- Python binding Hi, I traced everything and found the issue. The python module was not getting compiled (and hence pointing to the old installation) as cmake could not find PYTHON_INCLUDE_DIR (for some unknown reason, I have no idea, cmake could find PYTHON_LIBRARY and the interpreter but not the include directory) which is the reason though opencv_contrib was getting build, cv2.so was not. By doing some hit and trial in cmake, I could get Opencv 3 working in python, although Opencv 3 has issues on a very different level! Hope it helps. |
2015-02-15 08:20:09 -0600 | asked a question | cannot import xfeatures2d in OpenCV 3- Python binding I am trying to access SIFT and SURF features from opencv 3 in python. As suggested by other people, I followed the installation of opencv_contrib. Some of the logs of the installation are: After that I import cv2 in python but could not import xfeatures2d. Also, |