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32,840 questions
Tagged
106
views
1
answer
no
votes
2020-04-08 15:28:04 -0500
noshky
SolvePNP_P3P doesn't work for 4 points. Please help.
solvePnP
extrinsic
P3P
calibration
CV_64F
4
views
no
answers
no
votes
2020-04-08 15:27:46 -0500
R0dan
gcc: error: long: No such file or directory
qt
opencv
windres.exe
3
views
no
answers
no
votes
2020-04-08 14:50:39 -0500
Anton Gromov
Using solvePnP with fixed center of rotation
solvePnP
SOLVEPNP_ITERATIVE
7
views
no
answers
no
votes
2020-04-08 13:49:51 -0500
berak
openCV function '.read()' return (False, None)
None
8
views
no
answers
1
vote
2020-04-08 10:32:53 -0500
berak
LSH knnSearch slow in large dataset
knnsearch
ORBFeatureDetector
ORBFeatureDescriptor
lsh
9
views
no
answers
no
votes
2020-04-08 09:47:54 -0500
edif
How to determine and compensate for light falloff during stitching
illumination
light
brightness
falloff
compensate
uneven
26
views
no
answers
no
votes
2020-04-08 07:32:16 -0500
berak
[Darknet-off topic] Cannot load image "-dont_show" despite patch of images and opencv OK [closed]
darknet
15
views
1
answer
no
votes
2020-04-08 06:33:09 -0500
berak
convexityDefects errors
convexityDefects
checkVector
15
views
no
answers
-1
votes
2020-04-08 01:42:27 -0500
Srini9
Suggestion on a usecase
cvMatchTemplate
image
image-processing
image-recognition
14
views
no
answers
no
votes
2020-04-07 23:45:47 -0500
WayneCho
How can I measure the difference between two gradient maps? Is there any metric?
imageprocessing
11
views
no
answers
no
votes
2020-04-07 20:27:50 -0500
Assaf M
Identifying positive pixels after color deconvolution ignoring boundaries
Deconvolution
Thresholding
adaptiveThreshold
15
views
no
answers
-1
votes
2020-04-07 15:20:17 -0500
sonam
cv2.error: OpenCV(4.2.0)
2dimage
7
views
no
answers
no
votes
2020-04-07 09:40:54 -0500
TheCakeLover
hpoints > 0: Error using convexityDefects() [closed]
convexHull
convexityDefects
105
views
1
answer
no
votes
2020-04-07 09:06:53 -0500
zelda
Android studio: undefined reference to cv::Stitcher
android
stitcher
CMakeLists
15
views
no
answers
no
votes
2020-04-07 04:44:43 -0500
gaby
SIGSEGV in libopencv_core.4.1.dylib called from java, works on one machine but not another [closed]
4.1
java
macos10.15.4
19
views
no
answers
1
vote
2020-04-07 02:26:43 -0500
hamsolo474
contourArea strange behaviour
contours
contourArea
python
18
views
no
answers
1
vote
2020-04-07 01:42:41 -0500
berak
Measuring color difference from an ROI within the image using DeltaE color difference?
Euclidean_distance
color-segmentation
12
views
no
answers
no
votes
2020-04-06 23:30:25 -0500
George_cwg
_MM_PERM_ACBD problem in opencv 4.3.0 compiling
_MM_PERM_ACBD
undeclared
identifier
18
views
no
answers
no
votes
2020-04-06 22:01:23 -0500
LearningCV
training haar cascade with single positive sample
opencv_createsamples
opencv_traincascade
11
views
no
answers
no
votes
2020-04-06 16:51:53 -0500
becca
Stereo Camera fisheye rectification problem
Rectification
fisheye
stereo-calibration
13
views
no
answers
no
votes
2020-04-06 14:32:47 -0500
andrei186
extract RGB values from ptr[c] = cv::Vec3b(ptr[c][2], ptr[c][1], ptr[c][0]);
extract
RGB
values
from
Ptr
47
views
1
answer
no
votes
2020-04-06 14:15:59 -0500
supra56
How to create a Binary Mask for medical images
python
image-processing
13
views
no
answers
no
votes
2020-04-06 13:06:20 -0500
stefanos.dimos
How to properly estimate the Z rotation using ArUco Markers
aruco
opencv
camera
pose_estimation
orientation
38
views
no
answers
-1
votes
2020-04-06 12:00:46 -0500
anitarentz
I need help to install openCV
opencv#c++#Install
17
views
no
answers
no
votes
2020-04-06 11:53:53 -0500
kane17752
openCVSharp [closed]
opencvsharp
memory
memoryleak
17
views
no
answers
no
votes
2020-04-06 10:21:59 -0500
Umut
How to copy shared OpenCV libraries to cmake's folder?
c++#opencv#ubuntu
21
views
no
answers
-1
votes
2020-04-06 10:21:08 -0500
Jack.Reacher
Extract Logo and Text from Visiting Card Image with coordinates
python
opencv
8
views
no
answers
no
votes
2020-04-06 09:51:17 -0500
GRASBOCK
CMake links dynamically even though its supposed to link statically [cross compilation Linux -> Windows]
c++#opencv#mingw
22
views
no
answers
no
votes
2020-04-06 09:22:19 -0500
Pigeon
How to know the orientation of the QR Code?
qrcode
orientation
61
views
no
answers
no
votes
2020-04-06 09:12:21 -0500
berak
error: (-215:Assertion failed) nelems <= size_t(INT_MAX)*size_t(INT_MAX) in function 'cv::Mat::reserveBuffer'
stereodisparity
1
2
3
4
5
...
1095
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