cudalegacy not compile -- nppiGraphcut missing
trying to build v3.1 opencv with cuda support. standard cmake. project of: opencv_cudalegacy and doing 'Build' 1>------ Build started: Project: opencv_cudalegacy, Configuration: Debug x64 ------...
View ArticleFlann Index in Java
It seems to me Flann::Index is not available via the Java wrappers. (C++ docs here: http://docs.opencv.org/master/d1/db2/classcv_1_1flann_1_1Index.html) What are my alternatives if I want to do...
View ArticleIntel acquires Itseez : no question
Hi I hope that's a [good news](http://opencv.org/intel-acquires-itseez.html) for opencv users and for open source communauty.
View ArticleBuilding opencv 3.1.0 on Ubuntu 16.04
Hi, I'm trying to build opencv from scratch on ubuntu 16.04 following instructions from here. (http://milq.github.io/install-opencv-ubuntu-debian/), but keep running into this libtiff error see...
View ArticleOpenCV Contrib Face module with Java wrapper - returning multiple prediction
I'm using [OpenCV Contrib Face module](https://github.com/Itseez/opencv_contrib/tree/master/modules/face) in Java. Java wrapper is automatically generated from C++ source code based on...
View ArticleCan someone help me in installing opencv in windows with contrib for python?
I tried the installation in many ways, but every time facing some errors while building the contrib using VS. Can someone tell the procedure to install opencv with contrib ?
View Articleminimum value per pixel (w.r.t channel) in a 3 channel image
Hi everyone, Is there any function in openCV which can return the minimum/maximum value of a pixel w.r.t channel in a 3 channel image (e.g. a BGR image) like the following available in MATLAB: temp =...
View ArticleCompute camera height
I have a dataset of images taken by Kinect (RGB+Depth). This dataset is for person detection so I do have the bounding box or/and the skeleton of the person. I need to compute or estimate the height of...
View ArticleHow to tile multiple live camera feeds in one window
I have live feeds from four GigE cameras. Is it possible to display all the four feeds in a single window.
View ArticleError “bad_alloc” or “Fatal Signal 11” when train decision tree using opencv...
I am trying to train my tree but the app crashes and shows "bad_alloc" or "Fatal Signal 11". I have been searching for an answer but I have not found anything useful... Could someone help me?:( Mat...
View ArticleCapture from two webcam
i have two web cams ( Laptop's cam and an USB webcam ) i tried to capture from two cams at the same time with the code below. it is working but one of the cams is lagging. when i make two exe file (...
View ArticleHow to find borders and crop the image
In my project, I am try to detect a handwritten character. How to find borders of image based on pixel colour and crop image. I wrote some code but it perfectly crops only at top left side written...
View ArticleVisual Studio, NuGet doesn't download lib/dll
Hey guys, related to this question posted here: http://answers.opencv.org/question/28558/package-received-by-nuget-does-not-contain-dll-files/ I am facing a similiar issue. I have made a new project...
View ArticleNeural network implementation using opencv and java
I should use opencv with java language but when i tried to implement neural network i got errors in this instruction ann.train(trainData, Ml.ROW_SAMPLE,train_labels); // Creating Training Data Mat...
View ArticleMat convert to int array to byte array
I need to convert a Mat to int array and byte array in C ++. How can I do this?
View ArticleHow to return and show only cropped area on CameraView?
I cand cropped CameraFrame. When I return the cropped area then I'm getting error. public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) { Mat imgSrc = inputFrame.rgba; Point...
View ArticleI'm using opencv for Image Processign, but getting one error when dataset is...
OpenCV Error: Assertion failed (s >= 0) in cv::setSize, file ..\..\..\..\opencv\modules\core\src\matrix.cpp, line 116 Exception in thread "AWT-EventQueue-0" CvException [org.opencv.core.CvException:...
View Articlewhat is the best methods to detect linear features from multiple images and...
I have taken 5 images over overlapping area. what is the best method to detect the exact lines in each image and match them. it is very important to have the same start and end point for each line
View ArticleInformative websites related to OpenCV
i think it will be useful if we add links of informative websites related to OpenCV here. Lets create a list together. Last additions : http://scikit-learn.org/stable/auto_examples/index.html...
View ArticleApache Spark JavaCV Histogram
Has anyone used javacv/apache spark? I'm trying to run a histogram and no matter what I set I get. java.lang.RuntimeException: No native JavaCPP library in memory. (Has Loader.load() been called?) when...
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