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
1k
views
1
answer
no
votes
2020-12-03 09:34:06 -0600
berak
Real-time webcam stream very slow with pixel manipulation
opencv
python
1k
views
1
answer
1
vote
2020-12-03 07:02:10 -0600
fadeto404
Pixel-wise matrix multiplication
matrix
vector
multiplication
2k
views
1
answer
1
vote
2020-12-03 07:37:47 -0600
supra56
I am create a rectangle box in video stream using python. how to apply face detection in rectangular box inside only and don't need out of the rectangular box detect face
opencv-python
228
views
no
answers
no
votes
2020-12-02 16:22:39 -0600
pooooppppyyjhb
Why is the processImage delegate not getting called automatically?
processing
image
process
delegate
ios
unity
1k
views
no
answers
no
votes
2020-12-02 09:38:34 -0600
amateurpirate
Duplicate frames in saved file from cv2.VideoWriter
CAP_PROP_FPS
USBcamera
cv2.videocapture
python
cv2.VideoWriter
652
views
no
answers
no
votes
2020-12-02 08:00:45 -0600
Ting
Reduce the opencv framework size by using size optimization
size
optimization
ios
xcode
gcc
compiler
846
views
1
answer
no
votes
2020-12-03 11:36:09 -0600
crackwitz
Training for roof tile detection
object_recognition
364
views
1
answer
-1
votes
2020-12-02 08:54:07 -0600
berak
Finding center of contour in a game
findContours
1k
views
1
answer
1
vote
2020-12-02 21:10:57 -0600
sturkmen
Did convexityDefects function behaviour changed between cv2 versions 4.2.0 and 4.3.0?
python
build_opencv_python
convexityDefects
contours
2k
views
no
answers
no
votes
2020-12-02 03:30:41 -0600
maw
imshow no window on Mac Big Sur with Python [closed]
opencv
python
imshow
1k
views
1
answer
no
votes
2020-12-05 03:42:42 -0600
sturkmen
installing 3.4.12 for ubuntu 18.04 LTS (install from source) for yolov4
installation-fails
1k
views
no
answers
no
votes
2020-12-07 02:08:05 -0600
AndrewM
How can I track the disappearance of a TV logo in a certain area in a frame (ROI)?
video_processing
743
views
no
answers
-1
votes
2020-12-01 21:13:26 -0600
lilyily
Converting image to grayscale
opencv
python
584
views
no
answers
no
votes
2020-12-01 10:18:57 -0600
sigmoid90
Pose estimation of image from a point cloud [closed]
3dreconstruction
matching
pose_estimation
image-registration
pointcloud
255
views
no
answers
no
votes
2020-12-01 07:39:09 -0600
Yaw Mensah
convert cv::Mat to a C Struct
OpenCVWrapper
999
views
1
answer
1
vote
2020-12-01 11:25:19 -0600
crackwitz
stitch transform reuse
image-stitching
stitching
python3
2k
views
2
answers
no
votes
2020-12-01 11:24:36 -0600
kbarni
Birdseye transform with getPerspectiveTransform
perspective
2k
views
1
answer
no
votes
2020-11-30 11:22:22 -0600
crackwitz
PatMax in OpenCV
locate
patmax
industrial
Pattern_recognition
pattern-matching
aoi
1k
views
1
answer
no
votes
2020-11-30 03:48:01 -0600
jaqueline.schweigert
OpenCV 4.5.0 Compile errors
installation
opencv4.5.0
java
4k
views
1
answer
no
votes
2020-11-30 02:13:48 -0600
berak
Expired US patent on SIFT
SIFT
patent
Restriction
2k
views
no
answers
no
votes
2020-11-29 13:02:04 -0600
offsetnull1
No rule to make target '/usr/local/lib/libz.so', needed by 'lib/libopencv_core.so.4.5.1
opecv
build
build-error
cmake-error
libs
21k
views
1
answer
no
votes
2020-11-30 03:19:02 -0600
berak
How can I solve this problem? module 'cv2.cv2' has no attribute 'SURF'
attributeerror
5k
views
2
answers
1
vote
2020-12-12 00:13:23 -0600
jacubit
Opencv and OAK on Mac with new chip M1
oak
compatibility
hardware
CPU
mac
apple
518
views
1
answer
no
votes
2020-11-28 02:21:26 -0600
berak
How to check if camera is enabled?
python
camera
942
views
1
answer
no
votes
2020-11-27 12:25:17 -0600
berak
Reduce frame resolution
resolution
java
android
1k
views
1
answer
no
votes
2020-11-30 05:23:37 -0600
berak
Converting Mat of point cloud mesh to vector<cv::Point3d>
point_cloud
3Dmesh
projection
c++
3k
views
no
answers
1
vote
2020-11-30 03:48:20 -0600
sigmoid90
Projecting point cloud to image plane in order to estimate camera pose
3dreconstruction
opencv
matching
pose_estimation
image-registration
point_cloud
2k
views
no
answers
no
votes
2020-11-30 16:58:15 -0600
Phil2
guidance for mapping 2D image onto 3D geometry
2d-3d-mapping
texture
calibration
point_cloud
644
views
no
answers
-1
votes
2020-11-27 01:22:28 -0600
Gur
How to detect lens flare /glare in images
lens
Flare
Glare
5k
views
1
answer
no
votes
2020-11-26 08:27:48 -0600
marius
OpenCV 4 and TermCriteria CV_TERMCRIT_ITER [closed]
TermCriteria
« previous
1
2
3
4
5
...
995
next page »
Links
Official site
GitHub
Wiki
Documentation
Contributors
Tags
python
×6
opencv
×4
point_cloud
×3
3dreconstruction
×2
image-registration
×2
ios
×2
java
×2
matching
×2
pose_estimation
×2
2d-3d-mapping
×1
3Dmesh
×1
android
×1
aoi
×1
apple
×1
attributeerror
×1
build
×1
build-error
×1
build_opencv_python
×1
c++
×1
calibration
×1
camera
×1
CAP_PROP_FPS
×1
cmake-error
×1
compatibility
×1
compiler
×1
contours
×1
convexityDefects
×1
CPU
×1
cv2.videocapture
×1
cv2.VideoWriter
×1
delegate
×1
findContours
×1
Flare
×1
gcc
×1
Glare
×1
hardware
×1
image
×1
image-stitching
×1
imshow
×1
industrial
×1
installation
×1
installation-fails
×1
lens
×1
libs
×1
locate
×1
mac
×1
matrix
×1
multiplication
×1
oak
×1
object_recognition
×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
×
