All Opencv Solutions on Gang of Coders

Total of 176 Opencv Solutions

OpenCV not working properly with python on Linux with anaconda. Getting error that cv2.imshow() is not implemented

Python Opencv Ubuntu Anaconda

Difference in output with waitKey(0) and waitKey(1)

Python 2.7 installing opencv via pip (virtual environment)

Python 2.7 Opencv Pip Virtualenv

How to add noise (Gaussian/salt and pepper etc) to image in Python with OpenCV

Read image grayscale opencv 3.0.0-dev

Python Opencv Grayscale

why cv2.imwrite() changes the color of pics?

Python Opencv opencv3.0

How can I determine distance from an object in a video?

C++Opencv Computer Vision Photogrammetry

Is it possible to use OpenCV or similar library in Javascript?

Javascript Html Opencv Artificial Intelligence Face Detection

How to detect lines in OpenCV?

Python Opencv Image Processing

opencv multi channel element access

C++Image Image Processing Opencv

Converting cv::Mat to IplImage*

Python OpenCV load image from byte string

Python Image Opencv Byte

Get video dimension in python-opencv

Python Opencv Video

Using openCV to overlay transparent image onto another image

Python Python 2.7 Opencv

How to create Haar Cascade (.xml file) to use in OpenCV?

Xml Opencv Emgucv

In OpenCV (Python), why am I getting 3 channel images from a grayscale image?

Python Opencv Image Processing Jpeg Grayscale

g++ ld: symbol(s) not found for architecture x86_64

Using OpenCV in Swift iOS

Ios Swift Opencv Image Processing

Python: how to capture image from webcam on click using OpenCV

Python Python 2.7 Opencv

How do I increase the contrast of an image in Python OpenCV

Python Image Opencv Image Processing Computer Vision

AttributeError: module 'cv2.cv2' has no attribute 'createLBPHFaceRecognizer'

Python Windows Opencv

Detect and visualize differences between two images with OpenCV Python

Python Image Opencv Image Processing Computer Vision

What is the difference between feature detection and descriptor extraction?

Image Processing Opencv Computer Vision Feature Detection Feature Extraction

Writing robust (color and size invariant) circle detection with OpenCV (based on Hough transform or other features)

C++Python C Opencv Computer Vision

Opencv polylines function in python throws exception

Python Opencv Numpy Points

Increasing camera capture resolution in OpenCV

C Image Opencv Webcam Resolutions

Differences between AForge and OpenCV

C#Image Processing Opencv Aforge

How to load png images with 4 channels?

How to detect simple geometric shapes using OpenCV

Image size (Python, OpenCV)

Python Opencv Size

Perspective Transform + Crop in iOS with OpenCV

Objective C Ios Image Processing Opencv Perspective

How to process images of a video, frame by frame, in video streaming using OpenCV and Python

Python Opencv Video Video Streaming

How can one display an image using cv2 in Python

Python Opencv Matplotlib

Convert np.array of type float64 to type uint8 scaling values

Python Image Numpy Opencv Image Processing

DestroyWindow does not close window on Mac using Python and OpenCV

Python User Interface Opencv

How to find corners on a Image using OpenCv

Image Processing Opencv

OpenCV 2.4 VideoCapture not working on Windows

Python Windows Opencv

c++ and opencv get and set pixel color to Mat

C++Opencv Image Processing Pixel Mat

How to import cv2 in python3?

Python 3.x Opencv Numpy

Crop black edges with OpenCV

Image Processing Opencv

OpenCV Python: Draw minAreaRect ( RotatedRect not implemented)

Loading all images using imread from a given folder

No implementation found for long org.opencv.core.Mat.n_Mat() error Using OpenCV

How to find the average colour of an image in Python with OpenCV?

Python Opencv Numpy Image Processing Scikit Image

How do I install Python OpenCV through Conda?

Python Opencv Anaconda Conda

Is there a way to detect if an image is blurry?

Image Processing Opencv

Simple and fast method to compare images for similarity

Image Processing Opencv Computer Vision

Python - Extracting and Saving Video Frames

Python Python 2.7 Opencv

How to remove convexity defects in a Sudoku square?

Python Opencv Computer Vision Sudoku

How to resize an image with OpenCV2.0 and Python2.6

Python Image Image Processing Resize Opencv

ImportError: numpy.core.multiarray failed to import

Python Python 2.7 Numpy Opencv

OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection

C++Objective C Image Processing Opencv Computer Vision

OpenCV – Depth map from Uncalibrated Stereo System

Python Opencv Stereo 3d Disparity Mapping

Checking images for similarity with OpenCV

Image Opencv Image Processing Comparison Similarity

How do I install opencv using pip?

Extracting text OpenCV

C++Opencv Image Processing Text Bounding Box

OpenCV in Android Studio

Android Opencv Android Studio Gradle

cv2.imshow command doesn't work properly in opencv-python

Python Opencv Image Processing

How can I sharpen an image in OpenCV?

Image Processing Opencv

how to convert an RGB image to numpy array?

Python Image Opencv Numpy

How to find out what type of a Mat object is with Mat::type() in OpenCV?

Opencv Opencv Mat

Size of Matrix OpenCV

Opencv Opencv Mat

How can I add new dimensions to a Numpy array?

Python Arrays Opencv Numpy

error: (-215) !empty() in function detectMultiScale

Python Python 2.7 Opencv Image Recognition

ImportError: libSM.so.6: cannot open shared object file: No such file or directory

Python Opencv Python Import Importerror Python Module

Convert image from PIL to openCV format

Python Image Processing Opencv Python Imaging-Library

Python OpenCV2 (cv2) wrapper to get image size?

Python Image Opencv Numpy

ImportError: DLL load failed: %1 is not a valid Win32 application. But the DLL's are there

Python Opencv Dll Path

Pycharm/Python OpenCV and CV2 install error

Python Opencv Pycharm

OpenCV giving wrong color to colored images on loading

Python Image Opencv Colors Rgb

Algorithm to detect corners of paper sheet in photo

Image Processing Opencv Edge Detection Hough Transform Image Segmentation

Should I use libc++ or libstdc++?

Linux Macos Opencv Libstdc++Libc++

How to draw a rectangle around a region of interest in python

Python Opencv Computer Vision Draw

Choosing the correct upper and lower HSV boundaries for color detection with`cv::inRange` (OpenCV)

Python Opencv Computer Vision Hsv Color Detection

imread returns None, violating assertion !_src.empty() in function 'cvtColor' error

OpenCV & Python - Image too big to display

Python Image Opencv Image Processing Computer Vision

Setting Camera Parameters in OpenCV/Python

Python Opencv Camera Python 2.7

How does one convert a grayscale image to RGB in OpenCV (Python)?

Python Image Opencv Image Processing Computer Vision

How to know total number of Frame in a file with cv2 in python

Python Opencv Video Frame Frame Rate

iPhone and OpenCV

Ios Iphone Opencv

What is different between all these OpenCV Python interfaces?

What does OpenCV's cvWaitKey( ) function do?

How do I choose between Tesseract and OpenCV?

Python Opencv Computer Vision Ocr Tesseract

OpenCV Point(x,y) represent (column,row) or (row,column)

Augmented Reality SDK with OpenCV

Opencv Augmented Reality

open cv error: (-215) scn == 3 || scn == 4 in function cvtColor

Python Opencv Photo

RuntimeError: module compiled against API version a but this version of numpy is 9

Python Python 2.7 Opencv Numpy

How to write text on a image in windows using python opencv2

Python Windows Opencv

Does performance differ between Python or C++ coding of OpenCV?

C++Python Performance Opencv

inverting image in Python with OpenCV

Python Arrays Opencv Numpy Image Processing

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

Python Opencv Lbph Algorithm

What are keypoints in image processing?

Opencv Image Processing Sift Surf Keypoint

Image Processing: Algorithm Improvement for 'Coca-Cola Can' Recognition

C++Algorithm Image Processing Opencv

Installing OpenCV for Python on Ubuntu, getting ImportError: No module named cv2.cv

Python Opencv Ubuntu Importerror

How to fill OpenCV image with one solid color?

Image Processing Opencv

Python: How to pip install opencv2 with specific version 2.4.9?

Python Opencv Pip Package

OpenCV Python: cv2.findContours - ValueError: too many values to unpack

Python Opencv Image Processing Opencv Contour

What's 0xFF for in cv2.waitKey(1)?

Python Opencv Hex

Why is Visual Studio 2010 not able to find/open PDB files?

Visual Studio Visual Studio-2010 Visual C++Opencv

Simple Digit Recognition OCR in OpenCV-Python

Python Opencv Numpy Computer Vision Ocr

Accessing certain pixel RGB value in openCV

Combining Two Images with OpenCV

Python Image Processing Opencv Computer Vision

OpenCV Python rotate image by X degrees around specific point

Python Opencv Rotation

Automatic contrast and brightness adjustment of a color photo of a sheet of paper with OpenCV

Python Image Opencv Image Processing Computer Vision

Installing OpenCV fails because it cannot find "skbuild"

Python Opencv Pip

overlay a smaller image on a larger image python OpenCv

Python Opencv Object Detection

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

Computing x,y coordinate (3D) from image point

Opencv Camera Calibration Pose Estimation

How to define the markers for Watershed in OpenCV?

Opencv Image Processing Computer Vision Image Segmentation Watershed

How to detect a Christmas Tree?

C++Python Opencv Image Processing Computer Vision

How can I upgrade NumPy?

Python Opencv Numpy Homebrew Anaconda

Resize an image without distortion OpenCV

Python Image Python 3.x Opencv

Python OpenCV - imshow doesn't need convert from BGR to RGB

Converting an OpenCV Image to Black and White

Python Image Processing Opencv Computer Vision

Rotate image and crop out black borders

Python Algorithm Opencv Aabb

openCV video saving in python

How to get image width and height in OpenCV?

Python C++Opencv

.Net (dotNet) wrappers for OpenCV?

C#.Net Opencv Mono Cross Platform

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

C#.Net Dll Opencv

Using other keys for the waitKey() function of opencv

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

Opencv Apt Get Pkg Config

Clone an image in cv2 python

DLL load failed error when importing cv2

Python Opencv Cv2

sift = cv2.xfeatures2d.SIFT_create() not working even though have contrib installed

Opencv Python 3.5

Cannot find module cv2 when using OpenCV

Python Python 2.7 Opencv Raspberry Pi

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

Can't use SURF, SIFT in OpenCV

Python Opencv Sift Surf

opencv.imshow will cause jupyter notebook crash

Python Opencv Ubuntu Jupyter Notebook

How to use opencv in using Gradle?

Android Opencv Gradle Android Gradle-Plugin

Convert opencv image format to PIL image format?

Python Opencv Image Processing Type Conversion Python Imaging-Library

How to crop a CvMat in OpenCV?

Opencv Opencv Mat

Writing an mp4 video using python opencv

Python Opencv Video

How to use OpenCV's connectedComponentsWithStats in Python?

Python Opencv Connected Components

Convert RGB to Black & White in OpenCV

C++C Image Processing Opencv Computer Vision

Easiest way to rotate by 90 degrees an image using OpenCV?

C++Image Opencv Rotation

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

C++Opencv Ubuntu 11.04

Print out the values of a (Mat) matrix in OpenCV C++

Create a new RGB OpenCV image using Python?

Recommended values for OpenCV detectMultiScale() parameters

C++Opencv Cascade Classifier

Rotate an image without cropping in OpenCV in C++

How to convert a python numpy array to an RGB image with Opencv 2.4?

Python Opencv Numpy

PyLint not recognizing cv2 members

Opencv Visual Studio-Code Pylint

How to crop an image in OpenCV using Python

What are the differences between CV_8U and CV_32F and what should I worry about when converting between them?

How to verify the correctness of calibration of a webcam?

Opencv Computer Vision Camera Calibration

How do I remove the background from this kind of image?

Python Opencv Image Processing Scikit Image

OpenCV undistortPoints and triangulatePoint give odd results (stereo)

C++Opencv Triangulation

Opencv - Grayscale mode Vs gray color conversion

Python Python 2.7 Opencv

OpenCV TypeError: Expected cv::UMat for argument 'src' - What is this?

Python Opencv Typeerror Src

OpenCV - Apply mask to a color image

Python Opencv Image Processing Mask

Detect face then autocrop pictures

Python Linux Opencv Crop Face Detection

Why OpenCV Using BGR Colour Space Instead of RGB

What does CV_8UC3 and the other types stand for in OpenCV?

Tensorflow vs OpenCV

Opencv Tensorflow Artificial Intelligence

Find OpenCV Version Installed on Ubuntu

using OpenCV and SVM with images

Using make with -j4 or -j8

C Opencv Makefile

How to check for openCV on Ubuntu 9.10

Linux Ubuntu Opencv

OpenCV error: the function is not implemented

Classification of detectors, extractors and matchers

C++Image Processing Opencv Computer Vision Feature Detection

Extracting a region from an image using slicing in Python, OpenCV

Python Opencv Image Processing

Install opencv for Python 3.3

Python Opencv Python 3.x

cv2.imshow() function is opening a window that always says not responding - python opencv

Opencv Python 2.7

Convert Mat to Array/Vector in OpenCV

C++Arrays Opencv Vector Synthesis

"In-source builds are not allowed" in cmake

Linux Opencv Cmake

Copy an cv::Mat inside a ROI of another one

C++Opencv Copy Roi

Installing OpenCV 2.4.3 in Visual C++ 2010 Express

C++Visual C++Opencv

Camera position in world coordinate from cv::solvePnP

C++Opengl Opencv Computer Vision Pose Estimation

Removing watermark out of an image using OpenCV

C++Opencv Image Processing Watermark

Displaying a webcam feed using OpenCV and Python

Python Opencv Webcam

Executing cv::warpPerspective for a fake deskewing on a set of cv::Point

C++Opencv Image Processing Perspective Skew

Haar Cascades vs. LBP Cascades in Face Detection

Opencv Cascade Face Detection Haar Wavelet Viola Jones

Simple illumination correction in images OpenCV C++

C++Opencv Image Processing Contrast

OpenCV/Python: read specific frame using VideoCapture

Python Python 2.7 Opencv

OpenCV: IplImage versus Mat, which to use?

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

C++Ubuntu Opencv G++