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29,830 questions
Tagged
410
views
no
answers
no
votes
2020-09-08 01:37:49 -0600
Warrior_KC
What is the best way to read frame from online streaming(using cv2.videocapture("sdp_file_name")) in every 5 secs from cv2.read ?
videostream
278
views
no
answers
no
votes
2020-10-04 14:42:35 -0600
supra56
Webcam generated image distorted and python stop working
webcam
opencv
python
14k
views
2
answers
no
votes
2020-09-12 09:57:59 -0600
AbhiTronix
RTSP Streaming, Gstreamer or FFmpeg ?
gstreamer
ffmpeg
c++
livestreaming
1k
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
227
views
no
answers
no
votes
2020-09-09 11:01:37 -0600
eyanson
Detect faces with facemask (COVID) [closed]
Facedetection
camera
6k
views
1
answer
no
votes
2020-09-09 11:56:24 -0600
grafy
opencv-4.4.0\modules\videoio\src\cap_msmf.cpp (682) CvCapture_MSMF::initStream Failed to set mediaType (stream 0, (640x480 @ 30) MFVideoFormat_RGB24(unsupported media type)
bug
803
views
no
answers
no
votes
2020-09-09 15:17:42 -0600
AndrewSweter
Opencv4: Undefined reference to ippiw library symbols
opencv4
ippiw
1k
views
no
answers
no
votes
2020-09-09 19:42:33 -0600
Ajith Nair
detect foreground and background colors from bounding rectangle
boundingBox
accessibility
foreground
backcolor
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
2k
views
1
answer
no
votes
2020-09-14 04:26:34 -0600
RoidDoi
Convert Images (cv::Mat)
convertTo
240
views
no
answers
no
votes
2020-09-10 11:42:21 -0600
bixaw67773
checkerboard for camera calibration - does size matter?
camera
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
689
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
525
views
no
answers
no
votes
2020-09-11 09:23:10 -0600
berak
Why VideoCapture fails to open Aravis Camera?
CaptureVideo
opencv
camera
244
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
777
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
1k
views
1
answer
no
votes
2020-09-22 10:41:03 -0600
ConnorM
Chessboard Calibration DBL_EPSILON error
camera
calibration
stereo
chessboard
638
views
no
answers
no
votes
2020-09-11 15:06:37 -0600
ConnorM
Triangulation - Combining Data from Multiple Cameras
camera
calibration
triangulation
stereo
multiple
2k
views
2
answers
no
votes
2020-09-16 04:01:10 -0600
cudawarped
How Can I use CUDA in Python for fastNlMeanDenosingColored?
gpu
CUDA
denoising
python
75
views
no
answers
no
votes
2020-09-12 22:59:44 -0600
jc508
Help to choose an opencv module/method
opencv
python
array
1k
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
1k
views
no
answers
no
votes
2020-09-13 09:19:24 -0600
x-nikolas
Opencv does not works (Python 3) [closed]
opencv#python#
407
views
no
answers
no
votes
2020-09-13 10:34:12 -0600
Shay
Iris Recognition - Iris localization
iris-detection
531
views
no
answers
no
votes
2020-09-13 19:22:39 -0600
dubbiescoobie99
multiple opencv processes running
Multithreading
c++
opencv
7k
views
3
answers
no
votes
2020-09-15 18:57:23 -0600
heavyswat
OpenCV GPU without compiling ?
opencv
gpu
CUDA
411
views
no
answers
no
votes
2020-09-14 11:00:41 -0600
ncrasta
world coordinates from object detection
opencv
python
1k
views
1
answer
no
votes
2020-09-15 02:00:20 -0600
berak
OpenCV Video Masking
python
102
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
620
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
1k
views
no
answers
no
votes
2020-09-15 18:26:30 -0600
Pedroski55
OpenCV detector is missing, how can I get it?
opencv
python
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