Crop an non rectangle area
I want to crop a area which is not like rectangle using use OpenCV C++ with different 4 coordinates. or i want to color not selected region to get the selected area clear . Please tell me the solution...
View ArticleLine detection and tracking algorithm for autonomous robot.
Hi there! I am wokring on an autonomous robot which has to run in a lane 2m wide with a yellow line marking the outer boundary and white line marking the inner boundary. What I have thought of is, that...
View ArticleHow to find Delaunay Neighborhood of all the vertices in OpenCV.
Delaunay Neighborhood of a vertex is its immediate spatial neighbors in the Delaunay Triangulation i.e. the vertices which share an edge with that vertex. I wish to find Delaunay Neighborhood for all...
View ArticleWhere to get MAT sources and how configure it for CMAKE?
I am new to OpenCV. I try to build OpenCV on Windows XP 32bit. I want to use MAT library because I plan to use this code...
View ArticleUsing the IR image as a mask for RGB image
I'm passing the RGB, Depth and IR image through from libfreenect2 to opencv, and I am having trouble working out how to use the the IR image as a mask over the RGB image to remove everything except...
View Articleparser.has() alway retruning true
Hello, I´m trying to use CommandLineParser and I have a problem : even if I don´t put anything when I lauch the program (only ./prog ), the function parser.has returns true, as if something was given...
View Articlei am doing project using opencv on raspberian wheezy (Linux) platform.Can...
I have two images, one source and one target. I want to get the histograms of both source and target. Finally match the histogram of target wrt source. The opnenCv method 'equalizeHist' does it for...
View ArticleImage Calibration Depth from RGB
Hi, I have a dataset where is a depth and rgb images taken by Kinect. And i have the information about bounding box on Rgb image, but not for depth, and this two sensor are not calibrate. I have also...
View ArticleParallel version of SIFT?
I know that SIFT is considered (according to many paper) the most accurate detector & descriptor available. Btw, it's one the slowest solutions also. So, there is any parallel implementation...
View ArticleHow to install and use pre-build opencv 2.4.13 for IOS on OSX El Capitan
I am trying to install opencv 2.4.13 for IOS to be used fir IOS project build in Xcode 7.3.1 I have downloaded opencv from here:...
View ArticleLot os Issues in Xfeature 2D
error: no member named 'exp32f' in namespace 'cv::hal' cv::hal::exp32f(W, W, len); error: no member named 'magnitude32f' in namespace 'cv::hal'; did you mean 'magnitude cv::hal::magnitude32f(X, Y,...
View Articlecudalegacy 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 ArticleGet a probability out of svm
I'm using SVM classifier and i did the training with 6 classes. Is it possible to get a probability when using an SVM in OpenCV? Thank you.
View Articleproblems with using Haar Cascade
I have problems with using Haar Cascade. I'd like to train каскад to find certain birds(Toucan) on the photos.. Cascade works if I just cut out Toucan with frame and background, but with bird it finds...
View ArticleOpenCV 3.1: cvflann::anyimpl::bad_any_cast
Hi there, I have an iOS project running OpenCV 3.1. I have this bit of code that crashes ONLY in debug mode. If I run this exact same code but change Xcode to run the project in release mode, the...
View ArticleHow to normalize image with opencv and java
I want to normalize an image using opencv and java before resizing it (changing size will make some changes in the image so i should normalized it this is the reason for choosing normalization).How...
View ArticleSuddenly cannot compile opencv applications, windows 10
I have been using openCv for a while, but have just moved to windows 10. Now, existing applications will compile, but I cannot make a new one. In a new project (visual studio 2015, release 64) I am...
View Articleunable to read image using opencv-2.4.13
I have statically cross compiled opencv-2.4.13 for ARM. I use this command to compile my code : g++ cppcode.c -L/Desktop/opencvBuild -lopencv_highgui -lopencv_imgproc -lopencv_core...
View ArticleHow to find the highest middle point in a flood filled image in opencv?
Hey I am new to OpenCV and Image Processing stuff and need help in order to find the highest middle point of a flood filled image or the highest middle point of a contour. These are the pictures of a...
View ArticleHow to use Opencv 3 particle filter api
I have built the opencv_contirb for opencv 3.1, and I got the tracking module. The document : http://docs.opencv.org/trunk/dc/d75/classcv_1_1TrackerSamplerAlgorithm.html#gsc.tab=0 The 3.0 doc also...
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