Top "Opencv" questions

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

I'm currently in Ubuntu 14.04, using python 2.7 and cv2. When I run this code: import numpy as np import cv2 img = …

python opencv photo

Python OpenCV2 (cv2) wrapper to get image size?

How to get the size of an image in cv2 wrapper in Python OpenCV (numpy). Is there a correct way …

python image opencv numpy

How do I install opencv using pip?

I need to install cv2 for a script that has been written for me. I tried pip install cv2 and …

python opencv

Size of Matrix OpenCV

I know this might be very rudimentary, but I am new to OpenCV. Could you please tell me how to …

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Simple Digit Recognition OCR in OpenCV-Python

I am trying to implement a "Digit Recognition OCR" in OpenCV-Python (cv2). It is just for learning purposes. I would …

python opencv numpy computer-vision ocr

Setting Camera Parameters in OpenCV/Python

I am using OpenCV (2.4) and Python (2.7.3) with a USB camera from Thorlabs (DC1545M). I am doing some image analysis …

python opencv camera python-2.7

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

I'm learning image processing using OpenCV for a realtime application. I did some thresholding on an image and want to …

python opencv image-processing

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

I have an Ubuntu 14.04 system, on which I want to install OpenCV and use it with Python 2.x. I installed …

python opencv ubuntu importerror

Using other keys for the waitKey() function of opencv

I'm working on a program (python ,opencv) in which I use the spacebar to go to the next frame, and …

python opencv

OpenCV !_src.empty() in function 'cvtColor' error

I am trying to do a basic colour conversion in python however I can't seem to get past the below …

python opencv