Top "Opencv" questions

OpenCV (Open Source Computer Vision) is a library for real time computer vision.

Create a new RGB OpenCV image using Python?

Possible Duplicate: OpenCv CreateImage Function isn’t working I wish to create a new RGB image in OpenCV using Python. …

python opencv
OpenCV get pixel channel value from Mat image

Maybe I'm not looking hard enough, but everything seems to want me to use an array. Thus, how do I …

c++ opencv getpixel
Convert RGB to Black & White in OpenCV

I would like to know how to convert an RGB image into a black & white (binary) image. After conversion, …

c++ c image-processing opencv computer-vision
How can I sharpen an image in OpenCV?

How can I sharpen an image using OpenCV? There are many ways of smoothing or blurring but none that I …

image-processing opencv
Checking images for similarity with OpenCV

Does OpenCV support the comparison of two images, returning some value (maybe a percentage) that indicates how similar these images …

image opencv comparison similarity
inverting image in Python with OpenCV

I want to load a color image, convert it to grayscale, and then invert the data in the file. What …

python arrays opencv numpy image-processing
How can I add new dimensions to a Numpy array?

I'm starting off with a numpy array of an image. In[1]:img = cv2.imread('test.jpg') The shape is what …

python arrays opencv numpy
How to crop a CvMat in OpenCV?

I have an image converted in a CvMat Matrix say CVMat source. Once I get a region of interest from …

opencv opencv-mat
Writing an mp4 video using python opencv

I want to capture video from a webcam and save it to an mp4 file using opencv. I found example …

python opencv video
ConvergenceWarning: Liblinear failed to converge, increase the number of iterations

Running the code of linear binary pattern for Adrian. This program runs but gives the following warning: C:\Python27\lib\…

python opencv lbph-algorithm