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5,271 questions
Tagged
opencv
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34k
views
no
answers
no
votes
2019-12-17 23:27:22 -0600
clefrks
error: (-215:Assertion failed) !_img.empty() in function 'imwrite [closed]
opencv
ffmpeg
Library
linux
161
views
no
answers
no
votes
2019-12-18 11:04:37 -0600
heisenburg007
Get video input when device not on uvc input
python
c++
opencv
236
views
no
answers
no
votes
2019-12-19 18:25:25 -0600
supra56
How to draw contours on squares drawn with pencil (Python)
opencv
python
contours
491
views
no
answers
no
votes
2019-12-24 14:18:38 -0600
karDilip
OpenCV Java: Iterate through all points in Line as obtained from FitLine & find distance of each point to Contour edge using pointPolygonTest - Little Help Please!
opencv
java
2k
views
no
answers
no
votes
2019-12-27 05:34:46 -0600
arnthorg
Syncing multiple cameras with the multiprocessing library
opencv
python
RaspberryPi
3k
views
no
answers
no
votes
2019-12-28 07:54:19 -0600
berak
Assertion failed (!fixedType() || ((Mat*)obj)->type() == mtype) in cv::_OutputArray::create while Performing DFT
assertion
c++
opencv
dft
149
views
no
answers
no
votes
2019-12-28 19:25:49 -0600
papabiceps
Learning the background model using images
opencv
BackgorundSubtractor
323
views
no
answers
no
votes
2019-12-29 10:39:00 -0600
AstroBen
CUDA: Has anyone tried passing GpuMats to other Python CUDA modules?
CUDA
python
opencv
cupy
545
views
no
answers
no
votes
2019-12-30 04:41:01 -0600
GW
How to get daytime of each frame when use cv2.VideoCapture("ip camera") python?
camera
opencv
python
daytime
cv2VideoCapture
time
690
views
no
answers
no
votes
2020-01-02 12:46:56 -0600
paul espinosa
opencv dnn shows error when use resnet50.cfg from darknet
darknet
opencv
c++dnnopencv
180
views
no
answers
no
votes
2020-01-03 17:14:26 -0600
JWKowns
20x20 Mat gets reshaped to 1x1200, expected 1x400 for kNearest [closed]
opencv
470
views
no
answers
no
votes
2020-01-04 17:41:31 -0600
abbeykevin
What is the best way to get the size and speed of a bubble in a video using python? [closed]
opencv
python
Video
773
views
no
answers
1
vote
2020-01-09 05:00:16 -0600
Sean87
Calibrating camera only for one plane
calibrateCamera
calibration
c++
opencv
1k
views
no
answers
no
votes
2020-01-13 03:16:26 -0600
FishCoder
Run Converted .pb model by using OpenCV's DNN Module
tensorflow
opencv
MaskRcnn
192
views
no
answers
no
votes
2020-01-14 01:44:50 -0600
Pradeep Chandra
How to connect to pelco camera using opencv python
opencv
python
pelco
120
views
no
answers
no
votes
2020-01-14 04:46:07 -0600
DoubleR
FastNlMeanDenoisingMulti - Faster way, improve time
opencv
python
fastNlMeansDenoising
image-processing
denoising
59
views
no
answers
no
votes
2020-01-16 18:07:46 -0600
Reshika
Orienting an Object in an image horizontally
python
opencv
271
views
no
answers
no
votes
2020-01-19 11:32:45 -0600
g40
Take 2: Building cv2_xxx.pyd for Windows x64/Python3.7
python
opencv
cmake
windows
1k
views
no
answers
no
votes
2020-01-24 14:20:35 -0600
hernancrespo
cv2.cvtColor causes to stop Python
python
pyqt5
opencv
618
views
no
answers
no
votes
2020-01-26 10:14:40 -0600
sreev
cuda nppial library not found while opencv compiling opencv-4.2.0
opencv
c++
CUDA
nvidia
238
views
no
answers
no
votes
2020-01-27 05:48:23 -0600
pitchaimuthu321
How to work with leaf disease detection Need a Help openCV
python
opencv
RaspberryPi
Leaf
Disease
detection
195
views
no
answers
no
votes
2020-01-28 07:18:46 -0600
kalv
Site_packages not updated after Windows Build of Open CV
opencv
build
python
665
views
no
answers
no
votes
2020-01-29 04:19:30 -0600
eLtronicsvilla
How can I re-track an object if track(using optical flow) lost?
object-tracking
image-processing
c++
opencv
computervision
opticalflow
1k
views
no
answers
no
votes
2020-02-01 01:18:00 -0600
Mohammad
OpenCV Exposure Compensation Without The Need To Stitch Images
opencv
python
ExposureCompensator
281
views
no
answers
no
votes
2020-02-01 09:11:48 -0600
hernancrespo
Mean of a frame always change? [closed]
opencv
1k
views
no
answers
no
votes
2020-02-03 03:40:51 -0600
Imran B
Cv2.cuda.remap assertion error
python
opencv
CUDA
remap
fisheye
1k
views
no
answers
no
votes
2020-02-06 01:39:59 -0600
Imran B
Image Stitching with cv2.cuda()
CUDA
opencv
python
videostitching
153
views
no
answers
no
votes
2020-02-06 01:53:55 -0600
Zana Zakaryaie Nejad
Does OpenCV uses GEMM for convolution?
opencv
GEMM
Convolution
sepFilter2d
177
views
no
answers
no
votes
2020-02-06 08:13:47 -0600
tsabbir96
Hello, I would like to segment some images based on some conditions, Could you help me with that?
opencv
python
8k
views
no
answers
no
votes
2020-02-06 19:19:04 -0600
gersonmlb
Error cv :: VideoWriter :: open VIDEOIO (CV_IMAGES): raised OpenCV exception: when executing a .exe packaged from a .py
opencv
python
videocapture
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