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12,357 questions
Tagged
131
views
no
answers
no
votes
2015-10-23 03:10:17 -0600
synome
Save an Face Detection
android
2k
views
no
answers
no
votes
2014-10-30 08:45:45 -0600
kevin.gurney
Valgrind Reports Possible Memory Leak using OpenCV C++ Libraries
#valgrind
#memory_allocation
memory_deallocation
memory
#memoryleak
12k
views
no
answers
no
votes
2020-08-11 20:20:20 -0600
supra56
error: (-2:Unspecified error) could not find a writer for the specified extension in function cv::imwrite
opencv
python
832
views
no
answers
1
vote
2017-04-04 06:17:40 -0600
kyranf
solvePnP issue with sudden rotation change, with occluded point/s
solvePnP
3d
Opencv3.2.0
689
views
no
answers
1
vote
2019-01-08 13:20:23 -0600
asadali
Charuco corner detection confidence values
charuco
1k
views
no
answers
no
votes
2018-11-04 01:44:06 -0600
berak
OpenCV Error: Assertion failed ((npoints = prevPtsMat.checkVector(2, CV_32F, true)) >= 0) in calcOpticalFlowPyrLK, file /home/jiaxw/opencv/opencv-3.1.0/modules/video/src/lkpyramid.cpp, line 1114
calcOptialFlowPyrLK
1k
views
no
answers
no
votes
2013-11-06 14:50:32 -0600
berak
Automatic detection of pupils with OpenCV & node.js
node
opencv
625
views
no
answers
no
votes
2015-03-26 15:09:15 -0600
davifumi89
[c++] VideoCapture always returns a null image
CaptureVideo
captureimage
net
c++
opencv
93
views
no
answers
no
votes
2019-03-06 09:20:36 -0600
AlmaBaro
How to know the medium gray value of an image
opencv
132
views
no
answers
no
votes
2018-08-29 04:37:42 -0600
rainY
face recognize occur error in execute train method.
android
849
views
no
answers
no
votes
2017-06-09 06:47:59 -0600
rajat99
multithreading on position tracking function opencv c++
opencv
threading
tbb
123
views
no
answers
no
votes
2020-04-06 23:30:25 -0600
George_cwg
_MM_PERM_ACBD problem in opencv 4.3.0 compiling
_MM_PERM_ACBD
undeclared
identifier
233
views
no
answers
no
votes
2020-06-24 07:09:33 -0600
Alice_aj
iPhone reprojection error
calibration
aruco
2k
views
no
answers
no
votes
2019-06-29 02:59:17 -0600
doctrucker
Failing to lock exposure on Logitech C270
beginner
python
compile
c270
378
views
no
answers
no
votes
2016-01-26 04:25:30 -0600
daemon
Why not work createFisherFaceRecognizer() in opencv java?
opencv
java
1k
views
no
answers
no
votes
2015-04-22 01:58:33 -0600
Jiten
Why I Get error like "BufferOverflowException" on IplImage.getByteBuffer().put(data);
android
401
views
no
answers
1
vote
2013-07-05 15:00:58 -0600
Evil Potato
Live Stream FPS problem
#opencv
LiveVideo
recordVideo
CV_CAP_PROP_FPS
fps
431
views
no
answers
no
votes
2017-11-05 03:28:01 -0600
tham
Halide do not leverage gpu at all(opencv dnn)
dnnopencvmodule
1k
views
no
answers
no
votes
2014-05-20 01:41:27 -0600
wintersfury
OPENCV dev 3.0.0 "DownhillSimplex Method" OpenCV Error: Assertion failed
c++
OPENCV3.0.0.
solver
447
views
no
answers
no
votes
2017-05-12 08:26:37 -0600
Guy78
VideoWriter.write() doesn't write anything
videowriter
158
views
no
answers
no
votes
2015-08-11 14:21:05 -0600
LBerger
Exception using UMat
opencl
323
views
no
answers
no
votes
2020-06-30 03:43:58 -0600
DanielTan
Using OpenCV on MbedOS
embedded
mbed-os
opencv4.3.0
arm64
545
views
no
answers
no
votes
2017-04-04 16:04:05 -0600
SniFFzoR
How to create a matrix and make it a copy of the camera matrix?
java
calibration
matrix
creation
380
views
no
answers
1
vote
2015-03-23 04:49:31 -0600
gpg
How to limit keyPoints for surfFeatureDetector
c++
opencv
SVM
ml
501
views
no
answers
no
votes
2020-05-19 09:08:47 -0600
irwin_com
training shape predictor
Dlib
python
objectdetection
157
views
no
answers
no
votes
2017-03-30 17:04:32 -0600
Ricardo
Translator of sign language in real time on a mobile device?
mobile
Device
Sign
language
translator
129
views
no
answers
no
votes
2018-03-03 06:53:29 -0600
sandiplovv
Some faces not detection
detection
1k
views
no
answers
no
votes
2019-05-05 11:38:49 -0600
HelloWar
How i am install OpenCV 4 and how to link with gcc compiler ?
install
Linking
841
views
no
answers
no
votes
2013-07-08 06:33:45 -0600
linelo
error LNK1104: cannot open file 'opencv_calib3d245d.lib'
#image-processing
363
views
no
answers
1
vote
2018-07-07 17:15:15 -0600
Kevin Knox
Should I try to OCR shorthand
OCR
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