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
2k
views
1
answer
no
votes
2020-06-23 12:11:41 -0600
supra56
Python3 can I replace waitKey() with an input using curses?
python3
126
views
no
answers
-1
votes
2020-06-25 01:34:32 -0600
Malathi_72
Create mask of one column/row [closed]
image
access_mask
1k
views
2
answers
-1
votes
2020-06-28 05:12:46 -0600
Sai Nyi
How to change OpenCV python 3
opencv
508
views
1
answer
-1
votes
2020-06-27 05:20:25 -0600
supra56
Python type casting [closed]
python
opencv
329
views
no
answers
-1
votes
2020-06-28 10:54:26 -0600
Dragonfly Robotics
OpenCV Training Custom Haar Cascade with Python 3
opencv
python
cvHaarCascadeClassi
184
views
no
answers
no
votes
2020-06-30 20:59:01 -0600
supra56
Inline undistorting an image
lens-distortion
4k
views
1
answer
-1
votes
2020-07-02 09:11:45 -0600
Oregano Hauch
Imshow doesn't work in Jupyter and PyCharm [closed]
cv2.imshow
580
views
no
answers
no
votes
2020-07-02 13:24:25 -0600
alan89
Detect head using Haar Cascade, wont detect tilted head?
android
detection
600
views
2
answers
no
votes
2020-07-03 09:45:27 -0600
holger
i am doing a project to predict age and gender using tensorflow and opencv. and how to add path for xml file.
python3
opencv4
182
views
no
answers
no
votes
2020-07-06 03:41:46 -0600
berak
Existing models on images of cars taken horizontally? [closed]
drone
vehicle
134
views
no
answers
-1
votes
2020-07-06 08:25:13 -0600
adamtry
Black line following racecar [closed]
Line
linefollowing
racecar
125
views
no
answers
no
votes
2020-07-06 10:53:09 -0600
Horst
Multithreading Problem
multi-thread
9k
views
1
answer
no
votes
2020-07-07 04:27:25 -0600
supra56
closing video with any key
cv2.waitKey
27k
views
1
answer
no
votes
2020-07-08 06:20:21 -0600
berak
how do i create a blank image in opencv-python without using numpy?
opencvpython
imagestructure
2k
views
no
answers
no
votes
2020-07-09 22:59:30 -0600
FikMisfits
body height measurement and length of arm with OpenCV from a single still image capture.
measurement
449
views
no
answers
-1
votes
2020-07-11 22:48:56 -0600
despair104
How to solve this? (finding an image)
opencv
python3
feature-detection
3k
views
1
answer
-1
votes
2020-07-11 08:15:46 -0600
berak
how to resolve (-215:Assertion failed) !_src.empty() in function 'cv::boxFilter'
java
opencv
162
views
no
answers
-1
votes
2020-07-14 04:07:43 -0600
werther
edge detection in garden [closed]
edgedetection
1k
views
1
answer
-1
votes
2020-07-23 06:22:31 -0600
berak
Conversion JPEG to raw image
jpeg
3k
views
no
answers
-1
votes
2020-08-05 22:53:20 -0600
supra56
Capture Video from Camera using cv2.VideoCapture(0) not working
cv2VideoCapture
244
views
no
answers
-1
votes
2020-07-25 07:37:49 -0600
SezerD
Finding Perpendicular Speed of a Ball [closed]
balltracking
speed
476
views
no
answers
no
votes
2020-07-26 10:42:25 -0600
usuf
how to convert xy coordinates to Gcode [closed]
opencv#nodejs
4k
views
1
answer
no
votes
2020-07-28 06:51:26 -0600
berak
TypeError: Expected Ptr<cv::UMat> for argument 'src'
opencv
python
image-recognition
image_recognition
302
views
no
answers
-1
votes
2020-08-03 09:55:52 -0600
mprabhakarece
Problem in ORB feature matching [closed]
ORB#C++#Feature
matching
737
views
no
answers
no
votes
2020-08-05 22:14:11 -0600
supra56
cv2.error: assertion failed imshow [closed]
linux
imread
imshow
assertion
assertion_failed
894
views
no
answers
-1
votes
2020-08-04 12:16:43 -0600
jaiswati
Drawing borders to any borderless tables using openCV [closed]
Line
2k
views
1
answer
no
votes
2020-08-07 11:46:18 -0600
Ajay
How to develop a model to detect a point crossed a line?
camera
calibration
calibrationCamera
robot
tripwire
linedetection
1k
views
1
answer
-1
votes
2020-09-25 07:49:08 -0600
Supreeth Kumar Y P
Disable file system cache during imwrite [closed]
c++
cache
linux
imread
448
views
no
answers
no
votes
2020-08-10 05:26:13 -0600
pedrolula06
LNK1104 cannot open file 'opencv_world440.obj'
opencv#c++#visual
5k
views
no
answers
-1
votes
2020-08-12 10:35:37 -0600
Coder123456789
why do i get this error
python
« previous
1
...
44
45
46
47
48
...
995
next page »
Links
Official site
GitHub
Wiki
Documentation
Contributors
Tags
opencv
×6
python
×4
python3
×3
imread
×2
Line
×2
linux
×2
access_mask
×1
android
×1
assertion
×1
assertion_failed
×1
balltracking
×1
c++
×1
cache
×1
calibration
×1
calibrationCamera
×1
camera
×1
cv2.imshow
×1
cv2VideoCapture
×1
cv2.waitKey
×1
cvHaarCascadeClassi
×1
detection
×1
drone
×1
edgedetection
×1
feature-detection
×1
image
×1
image_recognition
×1
image-recognition
×1
imagestructure
×1
imshow
×1
java
×1
jpeg
×1
lens-distortion
×1
linedetection
×1
linefollowing
×1
matching
×1
measurement
×1
multi-thread
×1
opencv4
×1
opencv#c++#visual
×1
opencv#nodejs
×1
opencvpython
×1
ORB#C++#Feature
×1
racecar
×1
robot
×1
speed
×1
tripwire
×1
vehicle
×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
×
