Top "Opencv" questions

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

Python - OpenCV - imread - Displaying Image

I am currently working on reading an image and displaying it to a window. I have successfully done this, but …

python image opencv imshow
Package opencv was not found in the pkg-config search path

I have installed OpenCV using the instructions in https://help.ubuntu.com/community/OpenCV $ sudo su $ sudo apt-get install build-essential $ …

opencv apt-get pkg-config
OpenCV resize fails on large image with "error: (-215) ssize.area() > 0 in function cv::resize"

I'm using OpenCV 3.0.0 and Python 3.4.3 to process a very large RGB image (107162,79553,3). While I'm trying to resize it using the …

image opencv python-3.x image-processing opencv3.0
ImportError: DLL load failed: %1 is not a valid Win32 application

I have this issue where I try to import cv2 on python and get the following error message. >>&…

python opencv importerror
linux/videodev.h : no such file or directory - OpenCV on ubuntu 11.04

I tried to install OpenCV2.2 on Ubuntu 11.04. But OpenCV compilation fails stating an error related to linux/videodev.h file. …

c++ opencv ubuntu-11.04
How do I increase the contrast of an image in Python OpenCV

I am new to Python OpenCV. I have read some documents and answers here but I am unable to figure …

python image opencv image-processing computer-vision
How to create Haar Cascade (.xml file) to use in OpenCV?

If you are familiar with OpenCV library, you know what Haar Cascade image object detection is. By image object detection …

xml opencv emgucv
How to Apply Mask to Image in OpenCV?

I want to apply a binary mask to a color image. Please provide a basic code example with proper explanation …

c++ image image-processing opencv mask
How to use opencv in using Gradle?

I want to use Android Studio to develop an app using Gradle build tool. I can not insert the OpenCV …

android opencv gradle android-gradle-plugin
ImportError: libSM.so.6: cannot open shared object file: No such file or directory

When trying to import OpenCV, using import cv2 I get the following error: /usr/local/lib/python2.7/dist-packages/cv2/__init__.…

python opencv python-import importerror python-module