First time here? Check out the FAQ!
Hi there! Please sign in
help
faq
tags
users
badges
This forum is disabled, please visit
https://forum.opencv.org
ALL
UNANSWERED
Ask Your Question
RSS
Sort by »
relevance ▼
date
activity
answers
votes
486 questions
Tagged
38k
views
no
answers
no
votes
Dec 18 '19
clefrks
error: (-215:Assertion failed) !_img.empty() in function 'imwrite [closed]
opencv
ffmpeg
Library
linux
1k
views
1
answer
no
votes
Jul 18 '18
Evren
Performance issue with Android arm64-v8a custom build [closed]
android
arm64-v8a
opencv_performance
c++_static
922
views
1
answer
no
votes
Aug 21 '13
Patrick Tyll
HTC One, OpenCV & Native Activity
#htcone
#android#opencv
#native
1k
views
2
answers
no
votes
Nov 21 '13
stuarta
Building opencv-2.4.6.1 or 2.4.7 on CentOS 5
centos5
1k
views
no
answers
no
votes
Aug 24 '15
jeremyrutman
some functions not available
createFisher
136
views
no
answers
no
votes
Jun 10 '16
Dysth
Interpreting Valgrind results about a 3D reconstruction program
c++
Valgrind
opencv
151
views
no
answers
no
votes
Jun 28 '16
atv
dpm incredibly slow?
opencv
dpm
1k
views
no
answers
no
votes
Oct 29 '16
peterzcc
HIGH GPU Memory Usage by OpenCV Python Module [closed]
memory
1k
views
1
answer
no
votes
Mar 16 '17
adn
Missing ts from Release build
build
ts
tests
324
views
no
answers
2
votes
Jan 23 '18
deekshith_mr95
crash while building with ffmpeg and contrib in raspberry pi 3 model B(debian)
ffmpeg
build
RaspberryPi
c++
ipcamera
Builderror
3k
views
no
answers
1
vote
Jan 26 '18
berak
disable openCL for opencv 3.4
opencl
1k
views
no
answers
no
votes
May 7 '18
YayIguess
OpenCV failing to compile with CUDA support
CUDA
compile
3k
views
1
answer
no
votes
Aug 15 '18
wmmc88
How do I properly build Android OpenCV from sources?
build_sdk.py
build
contrib
android
91
views
no
answers
no
votes
Mar 12 '19
arosad2
K.lib not found
build
1k
views
no
answers
no
votes
Jul 26 '19
supra56
Windows 10 building openCV.js
opencvjs
1k
views
1
answer
no
votes
Apr 26 '0
berak
Ubuntu下编译opencv4.3.0+opencv_contrib4.3.0 android sdk
ubuntu
opencv4.3.0
android
SDK
opencv_contrib
2k
views
4
answers
no
votes
Dec 30 '18
gromtron
Building OpenCV with CUDA (Win10, VS 2017)
cuda10
Windows10
Visualstudio2017
10k
views
1
answer
no
votes
Aug 14 '12
powlee
VideoCapture is not working in OpenCV 2.4.2
installation
ffmpeg
stream
videocapture
2k
views
1
answer
1
vote
Jun 1 '14
Alexander Smorkalov
OpenCV build options, big difference in speed after android library linking
opencv
manager
speed
build
options
android
536
views
1
answer
no
votes
Jul 19 '15
StevenPuttemans
Improve training cascade speed
traincascade
21k
views
1
answer
no
votes
Oct 9 '16
gfx
sys/videoio.h: No such file or directory
opencv
ubuntu
build
3k
views
no
answers
no
votes
Aug 5 '16
monajalal
ImportError: No module named 'cv2' in OSX for OpenCV3 using Python3.5.2
python
Opencv3.0
OSX
843
views
2
answers
no
votes
Mar 25 '17
picaso
How to use MOG in python openCV 3.2.0 version [closed]
opencv#bgsegm
1k
views
no
answers
no
votes
Aug 3 '17
Raki
Matplotlib to replace imshow()
matplotlib
opencv
python3
256
views
no
answers
no
votes
Sep 27 '17
berak
videoCapture::open doesn't see default camera
videocapture
2k
views
no
answers
no
votes
Dec 21 '17
Paula
Error in make OpenCV - file in wrong format
make
cmake
442
views
no
answers
no
votes
Jun 12 '18
Amir Raouf
Why this error exists at building opencv?
opencv#ubuntu#cmake
475
views
no
answers
no
votes
Dec 26 '18
egorii
Which simple methods to speed up OpenCV code exists? [closed]
optimization
2k
views
1
answer
no
votes
Sep 17 '19
Spinner79
cmake build error on raspbian raspberry pi 4
cmake-error
254
views
no
answers
no
votes
Dec 18 '19
sid311
How to specify IPP version with CMake for versions 4.1.2/4.2.0?
IPP
lippicv
« previous
1
...
4
5
6
7
8
...
17
next page »
Links
Official site
GitHub
Wiki
Documentation
Contributors
Tags
build
×6
opencv
×6
android
×4
ffmpeg
×3
c++
×2
ubuntu
×2
videocapture
×2
#android#opencv
×1
arm64-v8a
×1
Builderror
×1
build_sdk.py
×1
centos5
×1
cmake
×1
cmake-error
×1
compile
×1
contrib
×1
createFisher
×1
c++_static
×1
CUDA
×1
cuda10
×1
dpm
×1
#htcone
×1
installation
×1
ipcamera
×1
IPP
×1
Library
×1
linux
×1
lippicv
×1
make
×1
manager
×1
matplotlib
×1
memory
×1
#native
×1
opencl
×1
Opencv3.0
×1
opencv4.3.0
×1
opencv#bgsegm
×1
opencv_contrib
×1
opencvjs
×1
opencv_performance
×1
opencv#ubuntu#cmake
×1
optimization
×1
options
×1
OSX
×1
python
×1
python3
×1
RaspberryPi
×1
SDK
×1
speed
×1
stream
×1
Copyright
OpenCV foundation
, 2012-2018. Content on this site is licensed under a
Creative Commons Attribution Share Alike 3.0
license.
Powered by Askbot version 0.10.2
Please note: OpenCV answers requires javascript to work properly, please enable javascript in your browser,
here is how
dummy
×