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 »
date
activity ▼
answers
votes
29,830 questions
Tagged
4k
views
1
answer
no
votes
2020-03-04 14:49:56 -0600
mvuori
Help with "Undefined-reference" when compiling with CMake for OpenCV & C++ program
linker-error
copencv
c++
ubuntu18.04
terminal
1k
views
1
answer
no
votes
2020-03-04 12:57:33 -0600
supra56
way to find Zebra crossing lines
image-processing
2k
views
no
answers
no
votes
2020-03-04 12:33:10 -0600
sine
imencode in opencv.js
OpenCV.js
imencode
ByteBuffer
241
views
1
answer
no
votes
2020-03-04 08:03:49 -0600
Wotrin
Help me recognise a filter!
filter
NPR
736
views
no
answers
no
votes
2020-03-04 05:25:36 -0600
basha
Can Anyone Help me. I am Getting StaticHelper: Cannot load library "opencv_java4"
opencv_java4
17k
views
1
answer
no
votes
2020-03-04 04:07:59 -0600
berak
Build OpenCV 3.4 for python 3.6 on ubuntu
build
3.4
ubuntu
cmake
1k
views
1
answer
no
votes
2020-03-04 01:35:04 -0600
berak
How to copy cv::Mat *img to cv::Mat img
darknet
yolo
Video
Input
1k
views
no
answers
no
votes
2020-03-03 22:23:43 -0600
Sibi K S
How to convert 16UC4 cv::Mat to AVFrame
avframe
1k
views
1
answer
no
votes
2020-03-03 17:40:23 -0600
lnx
This is a code to train a dataset of faces captured using OpenCV in python. I get error like this. Help appreciated
FaceRecognition
python
trainingdataset
827
views
1
answer
no
votes
2020-03-03 17:35:51 -0600
lnx
how to group nearby contours?
opencv
57
views
no
answers
no
votes
2020-03-03 16:13:53 -0600
MoscowskyAD
Is there object matcher?
objectmatcher
3k
views
no
answers
no
votes
2020-03-03 14:54:24 -0600
LBerger
Masking part of the image and get binary image of the masked part
mask
Overlooked
599
views
1
answer
1
vote
2020-03-03 14:37:35 -0600
Eyal321
error when running warpPolar
geometric-transform
pytohn3
1k
views
1
answer
no
votes
2020-03-03 12:49:04 -0600
sturkmen
Detect a half complete ellipse in opencv
opencv
python
emgucv
csharp
397
views
no
answers
no
votes
2020-03-03 09:24:58 -0600
eLtronicsvilla
optical flow orientation and magnitude based background and foreground segmentation
opticalflow
computervision
image-processing
c++
opencv
133
views
no
answers
no
votes
2020-03-03 07:49:26 -0600
supra56
Help appreciated. This is the error i get after executing the code. i use openpyxl 3.0.3 [closed]
python
opencv
Dlib
611
views
1
answer
no
votes
2020-03-03 07:03:58 -0600
kbarni
How to crop images using python?
opencv#python
Crop-image
image-processing
930
views
no
answers
no
votes
2020-03-03 05:41:19 -0600
AVK369
Prebuilt Windows binaries of opencv_contrib
binaries
prebuilt
opencv_contrib
2k
views
1
answer
no
votes
2020-03-03 05:04:41 -0600
cudawarped
Opencv cuda Merge returns Numpy array not GpuMat
opencv
python
CUDA
gpumat
numpy
599
views
no
answers
no
votes
2020-03-03 04:26:34 -0600
philyorkshire
iOS cv.imshow() not working
ios
705
views
no
answers
no
votes
2020-03-03 03:28:40 -0600
Houthius
cv::projectPoints giving bad results when undistorted 2d projections are far
c++
opencv
distortion
333
views
no
answers
no
votes
2020-03-03 02:32:51 -0600
Nativate
Help run caffemodel
caffeemodel
python
opencv
anaconda
jupyter
1k
views
2
answers
no
votes
2020-03-02 19:10:54 -0600
HYPEREGO
How to use multiprocessing with OpenCV-C++ ?
opencv
c++
multiprocessing
1k
views
1
answer
no
votes
2020-03-02 18:36:24 -0600
lnx
error: (-215:Assertion failed) !_src.empty() in function 'cvtColor'
error
cvtColor
196
views
1
answer
no
votes
2020-03-02 14:02:41 -0600
raggupta2
What should be better strategy to extract the curves of this photo
python
10k
views
1
answer
no
votes
2020-03-02 11:36:38 -0600
berak
How to find contour of black regions in white background ?
cv2.findContours
opencv#python
825
views
1
answer
no
votes
2020-03-02 10:09:15 -0600
supra56
How does the minimum distance for Houghcircles work?
HoughCircles
opencv
python
185
views
no
answers
no
votes
2020-03-01 15:56:22 -0600
GilchristT
Newbie - how to classify images based on average amount of colour? [closed]
classification
question
4k
views
no
answers
no
votes
2020-03-01 14:03:15 -0600
LBerger
CvCapture_MSMF::initStream Failed to set mediaType after switching to CUDA build of OpenCV
windows
CUDA
compile
videocapture
c++
msmf
466
views
no
answers
no
votes
2020-03-01 11:03:18 -0600
Maksat
Zero-normalised cross correlation for Template Matching
matchTemplate
ZNCC
« previous
1
...
54
55
56
57
58
...
995
next page »
Links
Official site
GitHub
Wiki
Documentation
Contributors
Tags
opencv
×9
python
×7
c++
×5
image-processing
×3
CUDA
×2
opencv#python
×2
3.4
×1
anaconda
×1
avframe
×1
binaries
×1
build
×1
ByteBuffer
×1
caffeemodel
×1
classification
×1
cmake
×1
compile
×1
computervision
×1
copencv
×1
Crop-image
×1
csharp
×1
cv2.findContours
×1
cvtColor
×1
darknet
×1
distortion
×1
Dlib
×1
emgucv
×1
error
×1
FaceRecognition
×1
filter
×1
geometric-transform
×1
gpumat
×1
HoughCircles
×1
imencode
×1
Input
×1
ios
×1
jupyter
×1
linker-error
×1
mask
×1
matchTemplate
×1
msmf
×1
multiprocessing
×1
NPR
×1
numpy
×1
objectmatcher
×1
opencv_contrib
×1
opencv_java4
×1
OpenCV.js
×1
opticalflow
×1
Overlooked
×1
prebuilt
×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
×
