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29,830 questions
Tagged
652
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
346
views
no
answers
no
votes
2020-09-24 07:37:13 -0600
Maxime
Why imread is reallocating data buffer
imread
c++
pointers
10k
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
811
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
236
views
no
answers
no
votes
2020-09-24 13:01:09 -0600
Mark S
ArUco Thresholding Window Size
aruco
adaptiveThreshold
threshold
1k
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
2k
views
1
answer
1
vote
2020-09-24 15:46:36 -0600
archimedium
warpPerspective() to a different origin [SOLVED]
geometric-transform
750
views
no
answers
no
votes
2020-09-25 02:54:32 -0600
wil-den
peculiar docker problem
opencv-python
docker
error
strange
455
views
no
answers
no
votes
2020-09-25 05:21:10 -0600
Shassk
Determine new coordinates of pixel after calibration + remap
calibration
190
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
1k
views
3
answers
no
votes
2020-09-25 05:36:01 -0600
Shassk
How to separate objects wich have the same color
objectdetection
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
106
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
268
views
no
answers
no
votes
2020-09-25 09:05:59 -0600
jast_r
Preform separation and image segmentation
c++
opencv
segmentation
defectdetection
379
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
229
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
284
views
no
answers
no
votes
2020-09-25 16:54:52 -0600
queisser
Calibration grid larger than FOV - which method?
calibration
11k
views
1
answer
3
votes
2020-09-25 19:46:18 -0600
tjwmmd2
Fastest way to convert BGR <-> RGB! Aka: Do NOT use Numpy magic "tricks".
python
numpy
conversion
1k
views
1
answer
no
votes
2020-09-26 17:43:25 -0600
yoshihiko
How to convert stereo camera distances, pixels to mm [closed]
stereocamera
332
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
1k
views
2
answers
2
votes
2020-09-27 05:39:55 -0600
sturkmen
try to read different frame by videocapture but failed
videocapture
499
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
141
views
1
answer
no
votes
2020-09-27 20:00:52 -0600
squenix008
Callback parameters not being updated
setMouseCallback
515
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
210
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
77
views
no
answers
no
votes
2020-09-28 05:18:41 -0600
image data
I wanted to export my satellite image to a particular zoom level
Satellite
254
views
no
answers
no
votes
2020-09-28 06:59:48 -0600
Scheolin
Camera Center from rvecs and tvecs
opencv
1k
views
no
answers
no
votes
2020-09-28 07:23:22 -0600
sarslan
Using Gstreamer Pipeline in openCV, Why my pipeline works when I add videoconvert element before appsink ?
gstreamer
nv12
1k
views
no
answers
no
votes
2020-09-28 11:52:06 -0600
kebwi
VFR: obtain FR/duration/timestamp of a given frame?
vfr
variable
framerate
frame
rate
198
views
no
answers
no
votes
2020-09-28 20:20:07 -0600
nabatta
Drone Localization with IR Beacons?
localization
drone
infrared
ir
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