find the contours of the image and then return the coordinates of these points
View Articleopencv .cpp, .hpp
Trying to use OpenCV 3.0 sources without/bypass the libraries. Has anyone tried this approach?. I got way too many errors.
View Articleopencl embedded
hi guys I am trying to run opencv3.0 on embedded board, (freescal ,i.mx6) but ,the board only suppord opencl 1.1 EP。 when i run test example, I got this message: /usr/lib/libOpenCL.so: undefined...
View Article"Gtk-WARNING **: cannot open display:
It's will be too difficult understand my word cause my English Level... sorry. following tutorial [doc.Opencv.org], and in Linux_Eclipse, i met some a problem. when it Debug, [Display Image:3131):...
View Articleis there another type of IDE other then MVS?
hi, Question, do we HAVE to use VS? or is their other ide i can use? i love to use VS but i cant seem to RUN or BUILD any code i make i get this pop up that says ( unable to start program the system...
View ArticleDoes the one class SVM ignore training labels automatically?
If I'm using CVSVM::ONE_CLASS, will the program just ignore the Mat containing my training labels? I have different classes in my data but there's also outliers which I cannot classify and I'd like my...
View ArticleColor histogram for object recognition
Hello, I would like to recognise fruit using color histogram, and svm. But whatever i am doing, the result of the SVM is false. Does someone can give me link to use color histogram for object...
View Articlemeaning of nstripes parameter in parallel_for_ in OpenCV3
What does the parameter "nstripes" mean in paralell_for_() function in OpenCV3? From my initial search, I found the following points. 1. "Specifying proper nstripes can be crucial for good performance"...
View ArticleQT not found when compiling OpenCV on another machine
Hi, I'm having trouble using a self-compiled cmake-based version of OpenCV 3.0. The whole compile procedure works fine, but when I'm trying to use the compiled libs and binaries on anotehr machine,...
View ArticleTrackbar callback as a member function
I am modeling my whole app with one class, let's call it X. As I intend to have many X objects, I need to use a Videocapture object as a member of each X object and I need to have a member function...
View ArticleHow to use OPENCV 2.4.10 with QTCreator 3.4.1
HI all, i want to use opencv with qtcreator on ubutnu 14.04 , can you help me to do this . i have followed this link http://rodrigoberriel.com/2014/11/using-opencv-3-qt-creator-3-2-qt-5-3/ but i get...
View ArticleUndefined reference error while compiling a C program on Raspberry Pi
I have been trying, unsuccessfully, to compile my c program for using openCV on the linux-based operating system run on Raspberry Pi, Raspbian. The goal is to interface with the RPi camera,...
View ArticlecvWarpPerspective : external exception e06d7363
Hello, I'm currently integrating the libDecodeQR library (used to decode QR Codes) in my application in **C++ Builder (XE6)**. I managed to have the **openCV 2.4.0** working and was therefore able to...
View ArticleWhy does cv::ocl::haveOpenCL() not return?
I am trying to use a simple code to check for presence of OpenCL support in Fedora 21. "clinfo" on my system lists my CPU as supporting OpenCL specifications. #include // check OCL if...
View Articleopencv in pypi
Hi, I did : pip search opencv. I get ctypes-opencv , opencv-cython , pyopencv, opencv_engine and few others. Could you clarify which is the right one. Thanks
View Articlehow to detect colors precisely ?
Hello, I want to detect the color from the tube, I am using In range function and HSV plan , its work fine for one by one tube,but as shown in figure, all tube has not exactly same color. ![image...
View ArticleOpencv 2 and 3 coexist?
Hi, Both opencv2 and opencv3 modules are named cv2.pyd. Since, they both work on Py 2.7, can I have opencv2 and opencv3 coexist in same python installation. Somehow just copy them to lib/site-packages....
View ArticleRaspberry Pi C Program with OpenCV - cvGrabeFrame linking error
I have been trying, unsuccessfully, to compile my c program for using openCV on the linux-based operating system run on Raspberry Pi, Raspbian. The goal is to interface with the RPi camera,...
View ArticleHow can I draw a boundary across a particular colour in opencv?
#include #include "opencv2/highgui/highgui.hpp" #include "opencv2/imgproc/imgproc.hpp" #include #include using namespace cv; using namespace std; int main(int argc, char** argv) { VideoCapture cap(0);...
View ArticleWhere can i find the steps to install latest version of openCV in...
I am using Ubuntu 14.04, I want to install the latest version of openCV with updated libraries and repositories. How can i accomplish this?
View Article