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29,830 questions
Tagged
488
views
1
answer
no
votes
2019-12-29 06:38:44 -0600
berak
Java DNN Help
cv2.dnn
190
views
1
answer
2
votes
2019-12-29 03:08:04 -0600
berak
Help required in contributing code to opencv 3.4 branch
tutorial
github
522
views
no
answers
no
votes
2019-12-28 19:52:18 -0600
2Smoker
Does CV_DISABLE_OPTIMIZATION disable all optimizations?
cmake
optimization
255
views
no
answers
no
votes
2019-12-28 19:25:49 -0600
papabiceps
Learning the background model using images
opencv
BackgorundSubtractor
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
1k
views
1
answer
no
votes
2019-12-28 02:23:32 -0600
cudawarped
dnn with cuda on 4.20
CUDA
3k
views
1
answer
no
votes
2019-12-28 13:11:31 -0600
cudawarped
Can't find GpuMAT() functions in v4.2.0-dev compiled with python & CUDA
python#cuda#opencv
123
views
no
answers
no
votes
2019-12-27 09:08:04 -0600
Galactic3D
Real-time location mapping using 3d model
real-time
mapping
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
2k
views
no
answers
no
votes
2019-12-27 05:34:46 -0600
arnthorg
Syncing multiple cameras with the multiprocessing library
opencv
python
RaspberryPi
732
views
no
answers
1
vote
2019-12-27 01:57:05 -0600
evgevd
DNN forwards only first image
c++dnnopencv
dnn
dnn.forward
365
views
no
answers
no
votes
2019-12-26 13:12:32 -0600
Vkkindia
GCR and UCR - python Possible
gcr
ucr
python
260
views
no
answers
no
votes
2019-12-26 12:00:26 -0600
BadMachine
Triangulate points using Hartley & Zisserman (iterative) method [closed]
triangulation
890
views
1
answer
no
votes
2019-12-26 09:29:07 -0600
supra56
Error of opening camera with OpenCV
cv2.videocapture
camera
11k
views
3
answers
no
votes
2020-01-14 23:45:29 -0600
Sherman
opencv 4.1.2 - TypeError: Expected Ptr<cv::UMat> for argument '%s'
TypeError
4.1.2
304
views
1
answer
no
votes
2019-12-27 03:17:36 -0600
cudawarped
cuda fastfeaturedetector
CUDA
Jetsonnano
copencvpython
FastFeatureDetector
1k
views
1
answer
no
votes
2019-12-27 07:00:36 -0600
cudawarped
Building OpenCV 4 requires CC 5.3 or higher - RTX 2080TI
opencv4
opencv4.2
CUDA
dnn
DNN_BACKEND_CUDA
202
views
no
answers
no
votes
2019-12-25 10:08:23 -0600
PeymanTGH
Calibrate camera using cube [closed]
calibrateCamera
1k
views
no
answers
no
votes
2019-12-25 10:51:23 -0600
muaz65
Issue with cv2.PerspectiveTransform and Direct Point Specific Homography Translation [Python]
perspectiveTransform
HomographyMatrix
translationMatrix
cv#opencv#python
9k
views
1
answer
no
votes
2019-12-26 08:21:42 -0600
supra56
Unable to find and draw biggest contour
copencv
FindContour
max
527
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
713
views
no
answers
no
votes
2019-12-24 07:27:20 -0600
Dimitar TB
How do I create a 3D map of keypoints from a single camera?
SLAM
3dreconstruction
c++#opencv
146
views
no
answers
no
votes
2019-12-24 02:43:28 -0600
azkaaprianta
MACE face authentication always return not same person
FaceRecognizer
MACE
2k
views
no
answers
no
votes
2019-12-24 01:38:33 -0600
LangdalePikes
How to improve identification confidence using LBPHFaceRecognizer
LBPHFaceRecognizer
identification
confidence-score
654
views
no
answers
no
votes
2019-12-23 21:06:24 -0600
clay
waitkey(1) freezes display output when previewing in multiple threading
waitkey
freezes
display
5k
views
1
answer
no
votes
2020-01-06 06:52:43 -0600
cudawarped
openCV 4.2 with CUDA 10.2
CUDA10.2
opencv4.2
434
views
no
answers
no
votes
2019-12-26 09:07:59 -0600
supra56
Detecting Certain Classes with OpenCV DNN
c++#dnn#opencv
108
views
no
answers
no
votes
2019-12-22 21:12:00 -0600
lunasdejavu
warpPerspective errors if do it separately by channels
cvWarpPerspective
327
views
2
answers
1
vote
2019-12-23 22:18:23 -0600
sturkmen
Getting absolutely different result from deblur c++ example [closed]
Deconvolution
Wiener
focus
deblur
104
views
no
answers
no
votes
2019-12-21 23:55:00 -0600
tech5
Continue path of vertical lines
opencvpython
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