Need help - building 3.0 with Cuda 7.5 on Windows VS2012, static lib output
If I configure CMake without CUDA (uncheck with WITH_CUDA, and uncheck all BUILD_opencv_cudaxxx modules), everything works fine. However, when I include CUDA - I have one issue in CMake, and if I...
View ArticleBuilding with VTK when VTK Backend is Opengl2
Hi - when I configure CMake for a build WITH_VTK, I get an error that it is looking for vtkRenderOpenGL. However, because my VTK build is with OpenGL2 backend, there is no such module and the actual...
View ArticleCUDA SURF Keypoint Detection on GPU ROI
I am trying to implement a GPU version of some regular OpenCV code I have. In particular, I perform Surf keypoint detection on only a user specified ROI of a larger Mat. My non-GPU code looks like: Mat...
View ArticleTry to measure times of image stitching using OpenCV Stitcher. Different...
I made little application to stitch few images using OpenCV. It's mainly to measure times of stitching. Here is a function to load photos using path in txt file: void ReadPhotos(string sourceIN){...
View Article360° Stiching
Hi, I'm trying to create a 360° Pamorma, so I used the OpenCV Stichling Library. I found an interesting and pretty well working code in github....
View ArticlecalcOpticalFlowBM function
Hello, I have question. I writing program and I need CalcOpticalFlowBM. It can't be anything else because I need this block matching method. Although in version 3.0.0 despite anything I include program...
View ArticleHow to use OpenCV to find if a person is wearing a hat or glasses?
I would like to use Computer Vision to do the following: A picture is taken as input from the user. The program checks if the person in the picture is wearing a hat or glasses and decides validity or...
View Articleheader for keyline
I was trying to use the line_descriptor class (BinaryDescriptorMatcher) and for that I had to use the KeyLine structure. When I try to include the "descriptor.hpp" is says that can't fine the file....
View Articlevisual studio express 2013 on win 8.1
hey there guys im here trying to follow any YT Video trying to find a setup with full details for my setup, usually ppl leave small details behind and this being the main reason why im yet to run...
View Articlemat from buffer
I try to capture video from frame grabber. What I did is I point raw data from buffer into Mat as follow: myMat = Mat(Size (x, y), CV_8UC1, ImaqBuffer); Image below (picture 1) show what I got from...
View Articlecv::fitline for C++
Hello, I try the fitline with this coding as I understand that the Input vector of 2D or 3D points, stored in std::vector<> or Mat. The contours is already in vector 2D form yet I still get the...
View ArticleHelp translate c++ to python | nearest points | line | polylines
I asked a question about contours, and how to fill blank spaces with "dashed" contour. @LBerger and @sturkmen gently gave me solutions, and I choose the @sturkmen code ( http://pastebin.com/EXuKpgY6 )...
View ArticleOpencv java with compare 2 products
I'm writing applications using opencv with java. Applications that check 2 identical products not available ?, his example as a template product, taking other products checked, if correct then keep,...
View Articleblob draw and number of pixels
Hi, i detected the blobs with the SimpleBlobDetector class . how can i draw these blobs or extract to matrix? How do I calculate the number of pixels inside the blob? and How can I determine its...
View ArticleconvexityDefect for point or line
Hi, When my program call convexityDefects with a contour which is a line or a point an exception is thrown at in...
View ArticleIs it possible to zoom and focus using OpenCV on Android?
Hi There! I am doing some image detection on Android with OpenCV. I noticed that the OpenCV camera is quite blurry if one tries to hold it up to a small object. Is there a way to zoom the camera and/or...
View ArticleOpenCV in C++ Builder (RAD Studio XE7)
Hi all, Would you kindly give some information on if it is possible to use OpenCV with Embarcadero RAD Studio XE7 C++ Builder or not, I will be pleased. Sincerely yours,
View ArticleOpenCV 3.0.0 and FFMPEG building errors
Hello, OpenCV was building fine untill I added FFMPEG libraries. The FFMPEG version I use is 2.8. This is the error i'm getting: Scanning dependencies of target opencv_videoio [ 39%] Building CXX...
View Articlehow to set XML cascade for detecting eyes and face on perspective view of faces
I was working on rotated face detecting using SVM ,that I needed to pre process like detecting eyes and faces, I use CascadClassifier and xml files that are located in data folder .I have 10 views of...
View ArticleHow to show a transparency png image always on the top
I would like to show a transparent png image always on the top (1) the transparency parameter can be defined by users (2) it is always shown on the top I also try to show a png image with transparent...
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