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783 questions
Tagged
1k
views
no
answers
no
votes
2017-05-11 12:14:01 -0600
john_turnbull
Ubuntu 16.04 Python after install OpenCV 3.1 and OpenCV_contrib 3.1, some extra modules are missing like Tracking and sfm
python
opencv_contrib
2k
views
no
answers
no
votes
2017-07-03 04:50:14 -0600
doudou2017
How to solve CMake Warning at cmake/OpenCVPackaging.cmake:23 (message): CPACK_PACKAGE_VERSION does not match version provided by version.hpp header! [closed]
opencv
7k
views
1
answer
no
votes
2017-07-04 00:40:04 -0600
berak
How does VideoCapture from USB Webcam on Windows using DirectShow and MJPG work?
mjpg
mjpeg
webcam
videocapture
directshow
620
views
no
answers
no
votes
2017-07-23 22:54:20 -0600
reid
DMA directly into UMat data
UMat
gpu
DMA
567
views
no
answers
no
votes
2017-07-25 09:42:48 -0600
berak
Building OpenCV Visual Studio 14 2015 Unicode Errors
visual-studio-2015
build
unicode
1k
views
no
answers
no
votes
2017-08-03 04:32:14 -0600
Raki
Matplotlib to replace imshow()
matplotlib
opencv
python3
2k
views
2
answers
no
votes
2017-11-22 08:31:24 -0600
fywa_prolge
cv::cudacodec::createVideoReader segfault
CUDA
9.0
NVCUVID
8k
views
1
answer
no
votes
2018-11-08 12:04:09 -0600
Eduardo
OpenCV + Darknet - Error when initializing darknet
yolo
object
detection
darknet
dnn
Initialization
4k
views
1
answer
no
votes
2018-01-19 13:16:04 -0600
mshabunin
Opencv 3.4.0 + Opencv contrib + MinGW 4.9.2 + ERROR while compiling (mingw-make)
OpenCV3.4.0
contrib
mingw
error
compiling
make
1k
views
no
answers
no
votes
2018-01-22 02:53:16 -0600
Micka
cuDNN in OpenCV DNN module?
dnn
opencv_dnn
gpu
cuDNN
643
views
1
answer
no
votes
2018-07-03 06:10:09 -0600
berak
dnn example question.
dnn
facenet
3k
views
1
answer
no
votes
2018-08-15 12:39:27 -0600
wmmc88
How do I properly build Android OpenCV from sources?
build_sdk.py
build
contrib
android
795
views
no
answers
no
votes
2018-10-26 07:12:19 -0600
sean2018
Opencv on MacOS Xcode can not use imread to read image based on c++
c++opencv
macos
1k
views
1
answer
no
votes
2019-01-23 05:05:02 -0600
JohnnyWang
How to fix the issue about cvCreateCameraCapture
android
opencv
ffmpeg
91
views
no
answers
no
votes
2019-01-23 10:56:37 -0600
peter_cz
How to detect workgroup size used?
dnn
814
views
1
answer
no
votes
2019-02-09 13:46:09 -0600
cudawarped
gpu decoder- all CUDA-capable devices are busy or unavailable in function 'allocate'
gpu#decoder
150
views
no
answers
no
votes
2019-04-25 20:01:02 -0600
zack
GaussianBlur in windows10 vs2017 and ubuntu g++ has different speed?
ubuntu
time
vs2017
881
views
no
answers
no
votes
2019-06-06 19:34:23 -0600
TomH
can't open URL video source with opencv-python cv2.VideoCapture()
opencv
python
520
views
no
answers
no
votes
2019-09-08 21:23:55 -0600
karl liu
failed to compile OpenCV with CUDA at opencv_cudev module
build
897
views
no
answers
no
votes
2019-10-03 12:52:46 -0600
bevilacq12
Trying to make OpenCV conan package with FFmpeg support, not working
conan
package
ffmpeg
1k
views
no
answers
no
votes
2019-12-30 20:45:29 -0600
supra56
Build OpenCV 4.x for Android with c++_static
build
319
views
no
answers
no
votes
2020-02-07 10:14:08 -0600
yangjingru
opencv cpp dnn objection detection not in accordance with tensorflow object detection of python
dnn
opencv
cpp
tensorflow
objection
detection
208
views
no
answers
no
votes
2020-03-17 22:40:39 -0600
ashishkrshrivastava
Changes in PR not getting build on custom builders [closed]
build
pr
custom
740
views
1
answer
no
votes
2020-04-27 01:10:39 -0600
berak
OpenCV 3.4, build with MinGW 8.1.0
mingw-w64
opencv
3.4.10
520
views
no
answers
no
votes
2020-04-29 09:52:02 -0600
Emanuel Ferreira
Failing to use IE Backend (Compiling CV with IE)
opencv
python
InferenceEngine
807
views
no
answers
no
votes
2020-06-02 12:03:55 -0600
dedetuga
Building Opencv4.3 Android shared libs error
build
android
opencv
linux
ubuntu
1k
views
no
answers
no
votes
2020-08-19 11:39:40 -0600
Fabrice_06
Wrong FPS and FRAME_COUNT read from a wmv file with opencv4.0 under python
get
CAP_PROP_FPS
CAP_PROP_FRAME_COUNT
585
views
no
answers
no
votes
2020-09-11 09:23:10 -0600
berak
Why VideoCapture fails to open Aravis Camera?
CaptureVideo
opencv
camera
926
views
2
answers
no
votes
2019-09-21 02:42:38 -0600
LBerger
RPi 3B+ setting OPENCV_ENABLE_NONFREE:BOOL=ON does not enable "non-free algorithms" after cmake
nonfree
cmake
build
RaspberryPi3
806
views
1
answer
no
votes
2013-09-15 10:34:30 -0600
Abid Rahman K
Python bindings on Mac Os X Mountain Lion
python
videocapture
webcam
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