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
29,830 questions
Tagged
434
views
no
answers
no
votes
2020-07-07 17:12:23 -0600
Francois Gervais
cv2.VideoCapture.read() prevent hidapi from receiving more data
usb
USBcamera
1k
views
no
answers
no
votes
2020-07-08 08:55:49 -0600
laura
OpenCL error CL_INVALID_VALUE in findChessboardCornersSB
opencl
cpp
c++
opencv
2k
views
4
answers
no
votes
2020-07-12 01:28:57 -0600
AibohphobiA
YUV422(16bit) to RGB(24bit) conversion
cvCvtColor
127
views
no
answers
no
votes
2020-07-06 23:40:14 -0600
vegPY
Attributeerror on the jetson nano, after opencv 4.1.1 build
python
1k
views
no
answers
no
votes
2020-07-07 16:59:27 -0600
MostafaTheReal
CUDNN, OpenCV, compile warning: “warning: overloaded virtual function “cv:: …” is only partially overridden in class"
nvidia
Jetson
nvcc
123
views
no
answers
no
votes
2020-07-06 21:08:55 -0600
intiger
make avi with cuda
cudacodec
9k
views
1
answer
no
votes
2020-07-07 04:27:25 -0600
supra56
closing video with any key
cv2.waitKey
706
views
no
answers
no
votes
2020-07-06 11:56:56 -0600
drakorg
VideoCapture.read() error description when returning false
videocapture
errorcode
125
views
no
answers
no
votes
2020-07-06 10:53:09 -0600
Horst
Multithreading Problem
multi-thread
136
views
no
answers
-1
votes
2020-07-06 08:25:13 -0600
adamtry
Black line following racecar [closed]
Line
linefollowing
racecar
1k
views
no
answers
no
votes
2020-07-06 07:28:46 -0600
bbboat
Still cant get "FFMPEG: tag 0x00000021/'!???' is not found" error after build from source
opencv-python
videowriter
948
views
no
answers
no
votes
2020-07-06 05:35:59 -0600
albeh95
How to check if an image is total black [closed]
check
4k
views
2
answers
3
votes
2020-07-07 03:40:47 -0600
berak
can't run HoughCircles on image
opencv
python
image-processing
1k
views
no
answers
no
votes
2020-07-12 04:56:24 -0600
Danny_00
Laser pointer ideas?
python
laser
461
views
no
answers
no
votes
2020-07-05 21:17:54 -0600
intiger
cuda videowriter throw exception
cudacodec
videowriter
1k
views
no
answers
no
votes
2020-07-08 11:53:32 -0600
bernard55
in opencv.js function cv.findTransformECC what is inputMask?
OpenCV.js
FindTransformECC
900
views
no
answers
no
votes
2020-07-05 10:20:01 -0600
shiva
Drawing rectangle on NV12 frame without conversion
nv12
cvRectangle
182
views
no
answers
no
votes
2020-07-06 03:41:46 -0600
berak
Existing models on images of cars taken horizontally? [closed]
drone
vehicle
2k
views
no
answers
no
votes
2020-07-08 14:51:11 -0600
supra56
"no element rtspsrc" gstreamer+opencv in win10
rtspsrc
gstreamer
windows
239
views
no
answers
no
votes
2020-07-04 13:10:17 -0600
ajpaezm
Help understanding if fabricant provides OpenCV ready device.
openni
videocapture
335
views
no
answers
no
votes
2020-07-04 07:05:56 -0600
vchill
Unable to build opencv on windows
c++
opencv
opencv_contrib
203
views
no
answers
no
votes
2020-07-04 04:45:41 -0600
albeh95
Isolate object to better detect it
objectdetection
413
views
no
answers
no
votes
2020-07-04 02:42:41 -0600
Proziiis
How to measure circle diameter with camera [closed]
vision
object-measurement
picture
camera
1k
views
1
answer
1
vote
2020-07-17 14:53:12 -0600
George Profenza
How to use OpenCV 4 in Java on Raspberry PI (armv6 and armv7 Raspian)?
java
arm
jni
177
views
no
answers
no
votes
2020-07-03 16:09:56 -0600
mikekelly
why does opencv_createsamlples only create 1000 sample vector file
opencv_createsamples
opecv_traincascade
455
views
no
answers
no
votes
2020-07-04 15:56:56 -0600
ejmeitz
namedWindow does not update when resizing
cvNamedWindow
namedwindow
255
views
no
answers
no
votes
2020-07-03 08:55:01 -0600
Boilan
Missing python binding, stitcher API [closed]
python
image-stitching
2k
views
1
answer
no
votes
2020-10-09 02:45:32 -0600
RashidLadj
OpenCV solvePnPRansac() function
opencv
python
3dreconstruction
computervision
camera
solvePnP
600
views
2
answers
no
votes
2020-07-03 09:45:27 -0600
holger
i am doing a project to predict age and gender using tensorflow and opencv. and how to add path for xml file.
python3
opencv4
425
views
1
answer
no
votes
2020-07-03 08:05:08 -0600
supra56
Opencv can't show live webcam footage.What is wrong with my code ?
contours
« previous
1
...
23
24
25
26
27
...
995
next page »
Links
Official site
GitHub
Wiki
Documentation
Contributors
Tags
python
×5
opencv
×4
c++
×2
camera
×2
cudacodec
×2
videocapture
×2
videowriter
×2
3dreconstruction
×1
arm
×1
check
×1
computervision
×1
contours
×1
cpp
×1
cv2.waitKey
×1
cvCvtColor
×1
cvNamedWindow
×1
cvRectangle
×1
drone
×1
errorcode
×1
FindTransformECC
×1
gstreamer
×1
image-processing
×1
image-stitching
×1
java
×1
Jetson
×1
jni
×1
laser
×1
Line
×1
linefollowing
×1
multi-thread
×1
namedwindow
×1
nv12
×1
nvcc
×1
nvidia
×1
objectdetection
×1
object-measurement
×1
opecv_traincascade
×1
opencl
×1
opencv4
×1
opencv_contrib
×1
opencv_createsamples
×1
OpenCV.js
×1
opencv-python
×1
openni
×1
picture
×1
python3
×1
racecar
×1
rtspsrc
×1
solvePnP
×1
usb
×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
×
