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29,830 questions
Tagged
439
views
no
answers
no
votes
2020-09-22 08:00:02 -0600
W.V.S.
identical object detection
object_recognition
2k
views
1
answer
no
votes
2020-09-24 14:05:44 -0600
sturkmen
Detect objects even though they touch the border of an image
opencv#python
447
views
no
answers
no
votes
2020-09-22 10:26:47 -0600
ConnorM
Poor Rectification Results After Good(?) Intrinsic/Extrinsic Parameter Estimation
camera
calibration
triangulation
error
6k
views
1
answer
1
vote
2020-09-22 15:55:52 -0600
aqiff98
Error importing cv2 after compiling OpenCV from source (Python)
opencv#python
977
views
no
answers
no
votes
2020-09-24 11:27:38 -0600
Maxime
Imread with preallocated data pointer (cuda unified memory) is reallocating with the exact same size, but shouldn't [closed]
c++
imread
CUDA
memory_allocation
198
views
no
answers
no
votes
2020-09-23 05:03:17 -0600
PavelP
knnMatch/BFHamming bug or not?
knnmatch
features2d
ORB
akaze
c++
325
views
1
answer
no
votes
2020-09-23 05:57:04 -0600
berak
can't find QuasiDenseStereo in opencv_contrib_python
python
stereo
QuasiDenseStereo
1k
views
no
answers
no
votes
2020-09-23 07:41:59 -0600
Bluesailor
no such module in import on Xcode with cocoapod OpenCV2
xcode-12
opencv
510
views
no
answers
no
votes
2020-09-24 01:19:44 -0600
aiubian
What's the pseudocode or algorithm inside solvePnP's SOLVEPNP_ITERATIVE flag?
solvePnP
Levenberg-Marquardt
SOLVEPNP_ITERATIVE
6k
views
1
answer
no
votes
2020-09-24 05:12:14 -0600
mvuori
cv:imwrite Python error with Windows: can't open file for writing: permission denied
python3
windows
imwrite
opencv
440
views
no
answers
no
votes
2020-11-11 12:50:37 -0600
aliakseis
Measuring of lanes or stripes on noisy and underexposed images
opencv
computer-vision
image-recognition
245
views
no
answers
no
votes
2020-09-29 08:49:30 -0600
kilwa
how can i draw a contours in specific region
opencv
python
745
views
no
answers
no
votes
2020-09-24 05:42:44 -0600
Den
Opencv.js - findPerspective returns wrong corners coordinates
js
opencv-js
OpenCV.js
396
views
no
answers
no
votes
2020-09-24 07:37:13 -0600
Maxime
Why imread is reallocating data buffer
imread
c++
pointers
12k
views
1
answer
no
votes
2020-09-24 10:44:53 -0600
berak
how to solve (-215:Assertion failed) !empty() in function 'cv::CascadeClassifier::detectMultiScale'
opencv
python
286
views
no
answers
no
votes
2020-09-24 13:01:09 -0600
Mark S
ArUco Thresholding Window Size
aruco
adaptiveThreshold
threshold
475
views
no
answers
no
votes
2020-09-25 09:20:12 -0600
Leonardo_ads
imencode not working with ".jpg" extension (Access violation reading location)
imencode
382
views
1
answer
1
vote
2020-09-26 19:26:00 -0600
greggaz
Cannot decode server-sent uchar vector on client side: Empty Mat results.
socket
imencode
imdecode
uchar
receive
send
827
views
no
answers
no
votes
2020-09-25 02:54:32 -0600
wil-den
peculiar docker problem
opencv-python
docker
error
strange
554
views
no
answers
no
votes
2020-09-25 05:21:10 -0600
Shassk
Determine new coordinates of pixel after calibration + remap
calibration
224
views
no
answers
no
votes
2020-09-25 05:34:38 -0600
Supreeth Kumar Y P
How to update UMat when Mat is updated?
c++
opencv
Mat
UMat
opencl
300
views
no
answers
no
votes
2020-09-25 09:05:59 -0600
jast_r
Preform separation and image segmentation
c++
opencv
segmentation
defectdetection
116
views
no
answers
no
votes
2020-09-25 08:36:25 -0600
Pawan29
What is the length of the tape/strip from the image?
opencv
and
python
237
views
no
answers
no
votes
2020-09-25 11:30:43 -0600
Vishwanath Garrepalli
Hi I have started working in ML and CV field recently. I want to participate in GSoC 2021. Can someone please guide and suggest me what I should do for contributing.
GSOC2021
opencv
322
views
no
answers
no
votes
2020-09-25 16:54:52 -0600
queisser
Calibration grid larger than FOV - which method?
calibration
711
views
1
answer
no
votes
2020-09-27 09:11:36 -0600
Chris
How to color the pixels in an image depending on whether they are inside/outside a zone/circle?
python
image
image-processing
mask
cv2
circle
1k
views
2
answers
2
votes
2020-09-27 05:39:55 -0600
sturkmen
try to read different frame by videocapture but failed
videocapture
159
views
1
answer
no
votes
2020-09-27 20:00:52 -0600
squenix008
Callback parameters not being updated
setMouseCallback
237
views
1
answer
1
vote
2020-09-28 03:09:56 -0600
berak
Why is a contour from cv2.findContours() in a shape like [N,1,2]?
findContours
python
567
views
no
answers
no
votes
2020-09-28 01:35:24 -0600
Deebo
Visual Studio 2019 build error "link.exe" could not be run
VS2019
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