Top "Opencv" questions

Simple and fast method to compare images for similarity

I need a simple and fast way to compare two images for similarity. I.e. I want to get a …

image-processing opencv computer-vision

Can't use SURF, SIFT in OpenCV

I'm trying a simple thing like detector = cv2.SIFT() and get this bad error detector = cv2.SIFT() AttributeError: 'module' object …

python opencv sift surf

openCV program compile error "libopencv_core.so.2.4: cannot open shared object file: No such file or directory" in ubuntu 12.04

I compiled and installed openCV 2.4.2 in ubuntu 12.04. Under /usr/local/include I can see the directories /usr/local/opencv and /…

c++ ubuntu opencv g++

How can I convert a cv::Mat to a gray scale in OpenCv?

How can I convert a cv::Mat to a gray scale? I am trying to run drawKeyPoints func from opencv, …

c++ variables opencv grayscale

How do I resolve "Please make sure that the file is accessible and that it is a valid assembly or COM component"?

I am building a project with OpenCV in C#. It requires a dll file called cvextern.dll. but, when adding …

c# .net dll opencv

Convert Mat to Array/Vector in OpenCV

I am novice in OpenCV. Recently, I have troubles finding OpenCV functions to convert from Mat to Array. I researched …

c++ arrays opencv vector synthesis

What does cv::normalize(_src, dst, 0, 255, NORM_MINMAX, CV_8UC1);

What does the cv::normalize(_src, dst, 0, 255, NORM_MINMAX, CV_8UC1); do in OpenCV? I went through the documentation and …

opencv

Displaying a webcam feed using OpenCV and Python

I have been trying to create a simple program with Python which uses OpenCV to get a video feed from …

python opencv webcam

OpenCV & Python - Image too big to display

I have an image that is 6400 × 3200, while my screen is 1280 x 800. Therefore, the image needs to be resized for display …

python image opencv image-processing imshow

Could not find module FindOpenCV.cmake ( Error in configuration process)

I wrote a CMakeLists.txt for a project in C++, which uses OpenCV libraries. When I try to create the …

opencv cmake