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
583
views
no
answers
1
vote
2020-04-08 10:32:53 -0600
berak
LSH knnSearch slow in large dataset [closed]
knnsearch
ORBFeatureDetector
ORBFeatureDescriptor
lsh
847
views
no
answers
no
votes
2020-04-08 13:49:51 -0600
berak
openCV function '.read()' return (False, None)
None
2k
views
1
answer
no
votes
2020-04-08 15:28:04 -0600
noshky
SolvePNP_P3P doesn't work for 4 points. Please help.
solvePnP
extrinsic
P3P
calibration
CV_64F
289
views
no
answers
no
votes
2020-04-08 18:07:31 -0600
h4k1m
Dot product on Vec2s returning incorrect results
dot
vectors
129
views
no
answers
no
votes
2020-04-08 20:26:25 -0600
alittlebirdy
Using convertTo corrupts the image
c++opencv
596
views
no
answers
no
votes
2020-04-08 21:54:42 -0600
redhwan
How to extract a feature from OpenCV instead of skimage?
feature
feature-extraction
python
image-processing
opencv
484
views
no
answers
no
votes
2020-04-09 02:20:58 -0600
berak
Procedure for getting 3D coordinates from Stereo?
3dreconstruction
stereo-calibration
Stereovision
386
views
1
answer
1
vote
2020-04-09 04:48:51 -0600
berak
python code in tutorial "file input and output using xml and yaml files"
opencv
python
tutorial
536
views
no
answers
no
votes
2020-04-09 07:56:43 -0600
noshky
1D->2D pose estimation - detect 2D camera location
solvePnP
camera-pose
pose-estimation
1k
views
1
answer
no
votes
2020-04-09 11:46:21 -0600
Eduardo
Using solvePnP with fixed center of rotation
solvePnP
SOLVEPNP_ITERATIVE
231
views
no
answers
no
votes
2020-04-09 13:25:25 -0600
chchang6
Test failure with opencv_perf_tracking
cvtest
build
823
views
2
answers
no
votes
2020-04-09 14:29:17 -0600
supra56
I can't draw the contour approximation, I use a green square to take the video but no contour on it.
opencv
picamera
contours
1k
views
no
answers
no
votes
2020-04-10 01:37:27 -0600
Sundar_1998
Sneeze and cough detection
face_detection
RaspberryPi
915
views
no
answers
no
votes
2020-04-10 05:22:09 -0600
LewsTherin511
OpenCV - object detection on video, elaborate frames in real time
opencvpython
fps
Livestream
209
views
no
answers
no
votes
2020-04-10 05:50:06 -0600
noshky
Linearity of world angles from image pixels
angles
calibrate
569
views
no
answers
no
votes
2020-04-10 08:21:35 -0600
Tyommik
OpenCV::DNN doesn't support conv1d
dnn
pytorch
onnx
240
views
1
answer
no
votes
2020-04-10 11:27:29 -0600
mvuori
why switch(a) converts char a into int decimal
switch
converts
char
into
int
decimal
844
views
no
answers
no
votes
2020-04-10 13:56:40 -0600
TWAAL
I need to count the number of pixels that fall into a color range
color-segmentation
Color
colorspace
colortracking
1k
views
1
answer
1
vote
2020-04-11 01:58:25 -0600
hamsolo474
contourArea strange behaviour
contours
contourArea
python
138
views
no
answers
no
votes
2020-04-11 05:42:51 -0600
amartincv
How to create a OpenCV camera from this parameters?
camera
calibrateCamera
intrinsic
551
views
no
answers
1
vote
2020-04-11 06:21:32 -0600
lucky
How to detect cracks in an image?
opencv
deep-learning
crack-detection
blob-detection
crack
975
views
no
answers
no
votes
2020-04-11 08:43:32 -0600
carmeltop
gcc: error: long: No such file or directory (!!DENABLE_OPENCV_ALLOCATOR_STATS has set off)
windows7
opencv
64-bitwindows
4k
views
2
answers
no
votes
2020-04-11 09:16:33 -0600
supra56
How do i remove background noise in binary picture?
threshold
python
otsu
binary
5k
views
1
answer
no
votes
2020-04-11 17:19:21 -0600
Pasteur Jr
Opencv-python kivy app running in Android - Camera does not open, issued error: (-215: Assertion failed)! _src.empty () in function 'cvtColor'
android
opencv
python
230
views
no
answers
no
votes
2020-04-12 01:38:37 -0600
Zana Zakaryaie Nejad
How to add python2 to pre-built OpenCV?
python
cmake
build
source
3k
views
1
answer
no
votes
2020-04-12 07:23:34 -0600
supra56
imageio image vs cv image
image-data
2k
views
1
answer
no
votes
2020-04-12 08:54:45 -0600
supra56
How can I increase contrast in binary picture?(python)
python
binary
binary-image
contrast
368
views
1
answer
no
votes
2020-04-12 20:42:26 -0600
supra56
Face recognition without deep learning on gpu?
python#cuda#opencv
392
views
1
answer
no
votes
2020-04-13 01:14:20 -0600
mvuori
when to normalize data [closed]
when
normalize
data
488
views
no
answers
no
votes
2020-04-13 02:08:21 -0600
prostoi chelovek
How to detect foreign objects on a plane?
object_detection
python
shadow-removal
BackgroundSub
« previous
1
...
947
948
949
950
951
...
995
next page »
Links
Official site
GitHub
Wiki
Documentation
Contributors
Tags
python
×8
opencv
×6
solvePnP
×3
binary
×2
build
×2
contours
×2
3dreconstruction
×1
64-bitwindows
×1
android
×1
angles
×1
BackgroundSub
×1
binary-image
×1
blob-detection
×1
calibrate
×1
calibrateCamera
×1
calibration
×1
camera
×1
camera-pose
×1
char
×1
cmake
×1
Color
×1
color-segmentation
×1
colorspace
×1
colortracking
×1
contourArea
×1
contrast
×1
converts
×1
c++opencv
×1
crack
×1
crack-detection
×1
CV_64F
×1
cvtest
×1
data
×1
decimal
×1
deep-learning
×1
dnn
×1
dot
×1
extrinsic
×1
face_detection
×1
feature
×1
feature-extraction
×1
fps
×1
image-data
×1
image-processing
×1
int
×1
into
×1
intrinsic
×1
knnsearch
×1
Livestream
×1
lsh
×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
×