First time here? Check out the FAQ!
Hi there! Please sign in
help
faq
tags
users
badges
This forum is disabled, please visit
https://forum.opencv.org
ALL
UNANSWERED
Ask Your Question
RSS
Sort by »
date
activity ▼
answers
votes
84 questions
Tagged
cv2
×
532
views
no
answers
no
votes
2020-11-24 10:44:25 -0600
daniel_vdc
Unable to open or export written video
cv2
opencv
python
4k
views
no
answers
-2
votes
2020-11-21 14:28:23 -0600
berak
cv2.error: OpenCV(4.4.0)error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor', 14errors module cv2
cv2
python
assertionerror
facial_expression
8k
views
no
answers
no
votes
2020-11-16 12:19:57 -0600
Zapero
cv2.error: OpenCV(4.5.0-dev) /home/pi/opencv/modules/highgui/src/window.cpp:651: error: (-2:Unspecified error) [closed]
cv2
625
views
no
answers
no
votes
2020-11-16 09:42:46 -0600
ArkadiuszN
How to get an rvec replacement from quaternion or euler values
aruco
rvec
cv2
278
views
no
answers
no
votes
2020-11-16 06:56:32 -0600
Srivatsav
cv2 python package folder structure
opencv
python
cv2
8k
views
1
answer
no
votes
2020-11-11 01:54:57 -0600
Anthony Of Sydney
Here is another rtsp cv2.VideoCapture onvif camera Nonmatching transport and -215:Assertion failed size and width > 0
rtsp
cv2
url
ffmeg
1k
views
no
answers
no
votes
2020-09-29 05:45:21 -0600
herbata666
Android - access hardware camera with Opencv-python and Kivy
ffmpeg
videocapture
cv2
501
views
1
answer
no
votes
2020-09-27 09:11:36 -0600
Chris
How to color the pixels in an image depending on whether they are inside/outside a zone/circle?
python
image
image-processing
mask
cv2
circle
1k
views
1
answer
-1
votes
2020-09-15 15:45:48 -0600
annikalinguistics
Continue video capture in background until new routine
cv2
opensesame
450
views
no
answers
no
votes
2020-08-08 19:31:47 -0600
falalala
Why does OpenCV VideoCapture using a URL not work on Heroku?
heroku
cv2.videocapture
cv2
python
414
views
no
answers
no
votes
2020-07-19 06:40:59 -0600
Niessoh
Why is setting frame height and width prevents saving the webcam stream to disk?
opencv
python
cv2
13k
views
2
answers
1
vote
2020-07-12 03:33:50 -0600
supra56
cv2 imshow displaying black images sometimes
cv2.imshow
ubuntu20.04
cv2
python
5k
views
no
answers
no
votes
2020-06-29 13:07:56 -0600
Riya208
How to superimpose heatmap of size (1024, 1024) on Image of size (1024, 1024, 3)?
cv2
cvtColor
heatmap
cv2addWeighted
126
views
no
answers
no
votes
2020-05-05 02:54:54 -0600
Dogu
How can I detect things with lines
cv2
opencv
python
numpy
449
views
no
answers
no
votes
2020-04-13 21:53:17 -0600
supra56
looping kiosk tkinter app with cv2
Tkinter
python
cv2
GUI
opencv
python3
3k
views
1
answer
no
votes
2020-04-02 13:32:38 -0600
crackwitz
How to save OpenCV image in MySQL database?
python
mysqlopencv
cv2
10k
views
1
answer
no
votes
2020-03-10 23:17:14 -0600
frankcarey
TypeError: Expected cv::UMat for argument 'img'
2d-image
cv2
numpy
edgedetection
368
views
no
answers
no
votes
2020-03-10 12:59:21 -0600
dunnoguy
How to live stream to a website using cv2 library
opencv
cv2
flask
webserver
webpage
cvhaartraining
1k
views
no
answers
no
votes
2020-02-03 15:19:07 -0600
berak
Auto image capture with stepper pauses
cv2
Stepper
automation
2k
views
no
answers
no
votes
2019-12-27 08:28:20 -0600
Marius Gaus
No module named 'cv2' but opencv is installed
python
cv2
opencv-python
8k
views
1
answer
no
votes
2019-12-17 01:35:22 -0600
arafat
No module named 'cv2'
python
opencv
install
cv2
5k
views
1
answer
no
votes
2019-10-28 11:42:53 -0600
supra56
isOpened() returns false on files
cv2
python
Open
Video
551
views
no
answers
no
votes
2019-09-17 07:16:18 -0600
bob mu
Python opencv writes frames to videos, memcpy errors leading to segmentation errors
cv2.VideoWrite
MPEG
segmentation
python
cv2
351
views
no
answers
-1
votes
2019-09-01 16:19:31 -0600
SajjadRostami
Video be freeze over Socket
cv2
flask
streamer
numpy
582
views
no
answers
no
votes
2019-05-16 21:22:08 -0600
HKTURAN
Object detection slow processing video [closed]
cv2
python
1k
views
1
answer
no
votes
2019-04-15 08:53:39 -0600
cudawarped
Building OpenCV with CUDA support
cv2
CUDA
python
155
views
no
answers
no
votes
2019-02-14 13:25:36 -0600
rode
OpenCV Raspberry pi3b+ call camera CSI
CV
cv2
RaspberryPi
6k
views
1
answer
no
votes
2019-02-14 05:01:16 -0600
berak
How to generate checkerboard for camera calibration?
opencv
cv2
python
4k
views
1
answer
no
votes
2019-01-27 21:20:27 -0600
supra56
VideoCapture freezes immediately after calling in code | Python 3
opencv
python
videocapture
cvWaitKey
cv2
computervision
169
views
no
answers
no
votes
2019-01-02 13:35:06 -0600
AdigTiwari
opencv2 creating bubble/ball game [closed]
bubble
cv2
1
2
3
next page »
Links
Official site
GitHub
Wiki
Documentation
Contributors
Tags
cv2
×30
python
×18
opencv
×9
numpy
×3
flask
×2
videocapture
×2
2d-image
×1
aruco
×1
assertionerror
×1
automation
×1
bubble
×1
circle
×1
computervision
×1
CUDA
×1
CV
×1
cv2addWeighted
×1
cv2.imshow
×1
cv2.videocapture
×1
cv2.VideoWrite
×1
cvhaartraining
×1
cvtColor
×1
cvWaitKey
×1
edgedetection
×1
facial_expression
×1
ffmeg
×1
ffmpeg
×1
GUI
×1
heatmap
×1
heroku
×1
image
×1
image-processing
×1
install
×1
mask
×1
MPEG
×1
mysqlopencv
×1
Open
×1
opencv-python
×1
python3
×1
RaspberryPi
×1
rtsp
×1
rvec
×1
segmentation
×1
Stepper
×1
streamer
×1
Tkinter
×1
ubuntu20.04
×1
url
×1
Video
×1
webpage
×1
webserver
×1
Copyright
OpenCV foundation
, 2012-2018. Content on this site is licensed under a
Creative Commons Attribution Share Alike 3.0
license.
Powered by Askbot version 0.10.2
Please note: OpenCV answers requires javascript to work properly, please enable javascript in your browser,
here is how
dummy
×
