portation: opencv 2.4.3 -> opencv 3.1., cvGetMat was not declared in this scope...

cv.cvtColor(img, cv.COLOR_BGR2GRAY) doesn't work...

how to use cv::Mat imgbuf created by pointer to video data...

Confused by OpenCV image representation...

OpenCV Rectangle are black when image is saved as bitmap...

What does this OpenCV installation error mean and how can I resolve it?...

How to get the PTS or frame number of the frame got by VideoCapture::read?...

OpenCV 3.1.0: Save and load trained SVMs...

Android : How to put object on particular location of screen using openCv?...

unrolled label of a Cap using chessboard pattern (OpenCV c++)...

Python: Perform Grey Image to RGB...

Render String as a Library Attribute in Python OpenCV...

OpenCV python inRange method causes error in C++ module...

Unable to access 6 channel Mat of type 16UC(6)...

How to calculate the fps of a video (with processing) using opencv...

Can't draw the epipolar lines in camera calibration and 3D- reconstruction using opencv & py...

How to use the PCACompute function from Python in OpenCV 3?...

opencv3.1 on windows. object has no attribute 'MinDistancePredictCollector'...

Detecting simple geometric shapes using OpenCV [Java]...

imshow() in OpenCV doesn't work for cv::Mat type CV_32F?...

Unable to detect ArUco markers with OpenCV 3.1.0...

How can I know tracking is lost using KCF tracker...

OpenCV - How to properly call bm3dDenoising()?...

Put Greyscale Images into one List - (Error: (-215) scn == 3 || scn == 4 in function ipp_cvtColor)...

OpenCV 3.1 optimization...

Python2: Resize image plotted using Matplotlib...

How to Choose which OpenCV to use in CMakeLists.txt when I have two OpenCV (same versions) in my com...

open cv3.1, python 3.5...

OpenCV 3.2.0 windows, OpenCL shows devices in C++ but not in python...

OpenCV get coordinates / radius in pixel...