calibrateCamera Expectations
Hello, I am just trying out opencv, specifically calibrateCamera, and I am attempting to get a baseline for my expectations when using this to calibrate real cameras. S I have generated images using...
View Articlesegfault on python calls from caffe in container
I have a thorny issue - when I call cv2 functions from a certain code (caffe) in a docker container I hit the following segfault, which does not occur if not running in a container; however the nvidia...
View ArticleCalcopticalflowpyrlk function in opencv 3.0
I'm trying to track something in some frames. I know calcopticalflowpyrlk(http://docs.opencv.org/3.0-beta/modules/video/doc/motion_analysis_and_object_tracking.html) is supposed to be used for sparse...
View ArticleEye detection and recognition
Hi, I am newbie to Open CV. I am in a situation where I have to decide whether I have to buy IRIS device for eye detection and recognition or I should do RnD to build application using Open CV which...
View ArticleOpenCv- VideoRecord (1 min or any certain time)?
Hello guys, Greetings from Turkey, I'm working on image processing. (OpenCv 3.0, c++) Actually, I try to doing: 1- Record Video as a 1 minunte, 2- After recording video, read recorded video 3- Do...
View Articlehow to fix error:cannot open file 'libboost_chrono-vc110-mt-gd-1_53.lib
Hi.I want to do projects fatigue detection ,But I encounter an error: Error 4 error LNK1104: cannot open file 'libboost_chrono-vc110-mt-gd-1_53.lib' ...\opencv\LINK opencv2 Please advise what to do to...
View ArticleOpencv detect and tracking logo inside video
i want to detect and tracking logo inside video in order to remove it , the logo moving . if possible add logo.png for hide the logo when showing .
View ArticleOPENCV 3.x - Visual Studio 2015 14.0.25424 Update 3 zlib X64 fail
I finally got the x86 (Win32) build to complete without errors: Install VS 2015, test with HelloWorld on Win32 and X64, Install git, Cmake, Git opencv to D:\opencv_get\opencv, configure VS paths and...
View ArticleOpenCV with CUDA support Problem
Hello, The system I use is Windows 8 with Nvidia Geforce GT 640M LE. The version of Visual Studio is 2013, Opencv is 2.4.9, and the Cuda's version is 6.5. I followed this tutorial :...
View Articlesynch problem
I am using 2 webcams with openCV on Raspberry Pi 3 model B (not simultaneously). If I use "Logitech" one, my python program makes nice pictures and writes them to a timestamped PNG file. Now I start...
View Articlescan a particular image through camera and compare with with original
Hi, 1.Scan a image through the camera and that image matches with original image. i mean after scanning it should match with original how could i create could anybody help me on that.
View ArticleFeature extracting for color
I am trying a color recognition system with the use of machine learning. I have read some papers. They are several feature extracting methods. What is the best feature extracting method for color...
View ArticleHow to Use Gstreamer in iOS
## i want to use gstreamer in iOS ------------------ ## Development environment - branch: 3.1.0-ios-fixed - ios: 9.3 - xcode: 7.3 ------------------ Normal building is completed, but Building with...
View Article3D Reconstructed Scene appearing in 'slices'
I am trying out 3D Reconstruction and while the frontal result looks exactly similar to its 2D scene, the view from the sides are appearing in slices. Does anyone have any suggestions on how I can make...
View ArticleError building opencv 2.4.13 with Qt mingw
Dear All, I am trying to configure OpenCV 2.4.13 with Qt MinGW. The config with CMAKE was successful, however, when I try to build with mingw32-make command I get the following error:...
View ArticleSVM returning a single value during prediction
I have trained an SVM for image classification as shown below. The training seem to be going on well but when I predict a row (any row of the training vector), SVM return just one value (60). What...
View ArticleChange 0,0 image point
Is it possible to change the 0,0 image point? I know it is located at the top left corner of the image and because of the fact that the axes continue with positive values downwards it makes it a little...
View ArticleBug in CV_IS_SUBMAT macro, fails to expand.
Seems within core/cvdef.h there is a typo within this macro, looking at the relationships between the flags and macros I believe the author's intent was to reference CV_SUBMAT_FLAG instead of...
View ArticleStereo Camera Calibration/Rectification with Zed Camera (python)
**Goal:** I want to calibrate and rectify my Zed camera. The input video feed leads to some complications. However, this method produces fewer headaches than buying a new computer which contains an...
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