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29,830 questions
Tagged
1k
views
1
answer
-1
votes
2020-09-15 15:45:48 -0600
annikalinguistics
Continue video capture in background until new routine
cv2
opensesame
672
views
no
answers
no
votes
2020-09-15 10:34:47 -0600
rtvideos
Removing lag from camera video stream using Opencv/Gstreamer
qt
c++
gstreamer
camera
116
views
no
answers
no
votes
2020-09-15 10:13:23 -0600
yvkae5
HoughCircles call ignores radius parameters (C++; OpenCV 2.4.13)
houghcircle
c++
opencv
1k
views
1
answer
no
votes
2020-09-15 02:00:20 -0600
berak
OpenCV Video Masking
python
345
views
no
answers
-1
votes
2020-09-14 21:48:51 -0600
Virtuall Kingg
How many IP cameras can openCV handle for real time processing?
copencv
ipcamera
multiplecameras
446
views
no
answers
no
votes
2020-09-14 11:00:41 -0600
ncrasta
world coordinates from object detection
opencv
python
774
views
no
answers
-1
votes
2020-09-14 05:26:11 -0600
hoseinimage
unspecified error & Process finished with exit code 0 [closed]
error
math
exit-code
4k
views
1
answer
no
votes
2020-09-14 04:26:34 -0600
RoidDoi
Convert Images (cv::Mat)
convertTo
2k
views
1
answer
no
votes
2020-09-14 02:19:42 -0600
berak
Where to find opencv_createsamples.exe in windows
copencv
python
opencv-windows
opencv_on_windows
2k
views
1
answer
no
votes
2020-09-14 01:16:33 -0600
larryhems
AttributeError: 'module' object has no attribute 'xfeatures2d'
python
xfeatures2d
SIFT
opencv-3.0.0
704
views
no
answers
no
votes
2020-09-13 19:22:39 -0600
dubbiescoobie99
multiple opencv processes running
Multithreading
c++
opencv
501
views
no
answers
no
votes
2020-09-13 10:34:12 -0600
Shay
Iris Recognition - Iris localization
iris-detection
5k
views
1
answer
2
votes
2020-09-13 09:50:07 -0600
AbhiTronix
how to stream preprocessed video over network
opencv
Network
1k
views
no
answers
no
votes
2020-09-13 09:19:24 -0600
x-nikolas
Opencv does not works (Python 3) [closed]
opencv#python#
1k
views
1
answer
2
votes
2020-09-13 04:17:10 -0600
berak
why the order of colors in drawChessboardCorners() changes?
calibrateCamera
chessboard
1k
views
3
answers
1
vote
2020-09-13 03:28:30 -0600
sturkmen
Opencv multiple circle detection in a image
houghcircle
contours
imageprocessing
findContours
image-processing
86
views
no
answers
no
votes
2020-09-12 22:59:44 -0600
jc508
Help to choose an opencv module/method
opencv
python
array
951
views
no
answers
no
votes
2020-09-12 16:47:55 -0600
Pawel Kranzberg
Using findHomography to align scanned documents; How do I avoid obviously-bad (non-planar/3D) transforms?
image-registration
findHomography
17k
views
2
answers
no
votes
2020-09-12 09:57:59 -0600
AbhiTronix
RTSP Streaming, Gstreamer or FFmpeg ?
gstreamer
ffmpeg
c++
livestreaming
529
views
no
answers
1
vote
2020-09-12 00:29:22 -0600
freeheartsz
how to use yolov3 with opencv.js in browser
OpenCV.js
Yolov3
804
views
no
answers
no
votes
2020-09-11 15:06:37 -0600
ConnorM
Triangulation - Combining Data from Multiple Cameras
camera
calibration
triangulation
stereo
multiple
1k
views
no
answers
no
votes
2020-09-11 13:10:58 -0600
berak
People Counter with Raspberry Pi 4 on Vertical View
OpenCV-2.4.9
raspberrypi4
footfall
283
views
no
answers
no
votes
2020-09-11 11:13:40 -0600
poornapragna
When to use fisheye camera calibration?
calibration
camera
cameraCalibration
fisheye
lens
lensdistortion
586
views
no
answers
no
votes
2020-09-11 09:23:10 -0600
berak
Why VideoCapture fails to open Aravis Camera?
CaptureVideo
opencv
camera
757
views
1
answer
no
votes
2020-09-11 02:28:44 -0600
berak
SystemError: <class 'cv2.UMat'> returned NULL without setting an error
UMat
perspectiveTransform
15k
views
no
answers
no
votes
2020-09-10 22:12:36 -0600
NiftyNev
cap_msmf.cpp (435) [ WARN:0] on cv2.VideoCapture break
cv2.videocapture
readwebcam
break
cap_msmf.cpp
253
views
no
answers
no
votes
2020-09-10 11:42:21 -0600
bixaw67773
checkerboard for camera calibration - does size matter?
camera
1k
views
no
answers
no
votes
2020-09-10 05:48:17 -0600
RashidLadj
Estimate camera pose from homography?
camera-pose
pose-estimation
homography-matrix
1k
views
no
answers
-1
votes
2020-09-10 03:17:14 -0600
hoseinimage
ValueError: setting an array element with a sequence.
findHomography
function
2k
views
1
answer
no
votes
2020-09-10 02:08:23 -0600
berak
How to create 4D mat, like dnn::blobFromImage do?
4D
Mat
blobfromImage
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