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31,827 questions
Tagged
10
views
1
answer
no
votes
2019-11-17 04:39:42 -0500
supra56
i am unable to install opencv using pip
installation-fails
215
views
1
answer
no
votes
2019-11-16 21:37:19 -0500
nishant_elxsi
I tried to link FFMPEG with OpenCV,but I am getting unable to stop the video stream:inappropriate ioctl device error. I tried to install latest version of FFMPEG(4.2.1) and link it to OpenCV(3.4.3) installed.But I am getting the same error.
opencv
ffmpeg
5
views
no
answers
no
votes
2019-11-16 20:28:05 -0500
HelloWorld
When I use bowtrainer.cluster(), if there are a lot of images, the application will exit with a segmentation error (core dump).
exit
18
views
no
answers
no
votes
2019-11-16 20:05:13 -0500
cv_new
A installation problem of OpenCV
opencv4
7
views
no
answers
no
votes
2019-11-16 15:35:56 -0500
sina_asefi87@yahoo.com
Rotate by warpPerspective after getPerspectiveTransform by 4 points in C++
c++
opencv
23
views
1
answer
no
votes
2019-11-16 11:10:34 -0500
Daz
Gamma, Tonemapping, - basics hdr
imageConversion
8
views
no
answers
no
votes
2019-11-16 10:17:53 -0500
Fandi
can roi use binary mask for segmentation?
segmentation
regionofinterest
9
views
no
answers
no
votes
2019-11-16 09:28:36 -0500
Der Luftmensch
cv::Mat and cv::cuda::GpuMat containers
core
Mat
CUDA
gpumat
polymorphism
62
views
no
answers
no
votes
2019-11-16 09:03:16 -0500
cv_new
A problem about building OpenCV4
opencv_contrib
3k
views
3
answers
no
votes
2019-11-16 04:31:36 -0500
Freeman
Best way not to have to copy a Mat back into an OutputArray
outputarray
10
views
no
answers
no
votes
2019-11-16 02:24:14 -0500
aditya_mangalampalli
OpenCV DNN Throws Unsupported Layer Error
dnn
33
views
1
answer
no
votes
2019-11-16 01:02:57 -0500
sturkmen
Is it possible to detect a circle with grey color and blue dot in center
houghcircle
25
views
no
answers
no
votes
2019-11-15 04:37:33 -0500
berak
How to Detect Speaker from facial landmarks of mouth using face_recognition
python
Facedetection
54
views
1
answer
no
votes
2019-11-15 01:54:39 -0500
Yashas
Error compiling openCV 4.1.2 with CUDA 9.0 in Ubuntu 16.04
CUDA9.0
ubuntu
35
views
no
answers
no
votes
2019-11-14 21:57:43 -0500
ashfaq267
How to crop and remove background or add white background
imageprocessing
shadow-removal
bacgroundsubtraction
32
views
1
answer
no
votes
2019-11-14 16:07:17 -0500
Martian
edge detection and contour extraction
cannyedgedetection
opencv
python
contours
edgedetection
18
views
no
answers
no
votes
2019-11-14 12:08:59 -0500
LiamColeE
Best parameters for Tracking medium/fast moving objects with KCF tracker
tracker
KCF
params
20
views
no
answers
no
votes
2019-11-14 08:15:17 -0500
snehal
DICOM Image segmentation and 3d construction using VTK [closed]
python
opencv
vtk
24
views
1
answer
no
votes
2019-11-14 08:14:34 -0500
berak
How to copy a mat object to a integer 2D matrix in opencv java ?
java
19
views
no
answers
no
votes
2019-11-14 05:03:48 -0500
Max Herrmann
Is there a 1-1 correspondence between HALCON and OpenCV calibration parameters?
halcon
calibration
stereo-calibration
intrinsics
32
views
no
answers
-1
votes
2019-11-14 01:01:49 -0500
MHZ
how to crop these areas from image ??
opencv
python
30
views
no
answers
no
votes
2019-11-13 22:01:41 -0500
patrick129
Change camera resolution in C++?
c++
opencv
21
views
no
answers
no
votes
2019-11-13 21:19:49 -0500
amarsaikhan
OpenCV 4.1.2 cannot load .so library in android
android
opencv
15
views
no
answers
no
votes
2019-11-13 14:12:18 -0500
cpp_opencv
DNN symbol lookup error
dnn
lookup
Linking
symbol
compile
21
views
no
answers
no
votes
2019-11-13 12:28:47 -0500
trolstover
libopencv_core.so.4.1 not found?
c++#opencv
6k
views
1
answer
1
vote
2019-11-13 06:55:07 -0500
bot1131357
CV_FOURCC was not declared in this scope
3.0.0
38
views
2
answers
no
votes
2019-11-13 06:25:47 -0500
supra56
How to fix error error: (-215:Assertion failed) size.width>0 && size.height>0 in function 'cv::imshow' when trying to capture a video stream?
opencv
python
24
views
1
answer
no
votes
2019-11-13 03:16:05 -0500
berak
error: use of undeclared identifier 'cv'
Local
local-binary-pattern
23
views
no
answers
no
votes
2019-11-13 02:29:42 -0500
kbarni
Hello, I am begginer with opencv c++ i have old code written in opencv 2 i want to change it .how can i change this cvConvert(Iplimage1, iplimage2); into new opencv c++ api.
IplImage
CvMat
c++opencv
19
views
no
answers
no
votes
2019-11-13 02:27:23 -0500
gpcbitnik
failed to load model with readNetFromModelOptimizer [closed]
opencv
openvino
dnn
1
2
3
4
5
...
1061
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