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467 questions
Tagged
Mat
×
1k
views
1
answer
no
votes
2019-04-23 07:36:42 -0600
berak
How to element-wise multiplication of Mat.
Mat
multiply
2k
views
1
answer
no
votes
2019-04-24 04:21:40 -0600
berak
Copy smaller mat to part of bigger mat
android
Mat
3k
views
no
answers
no
votes
2019-04-30 00:20:05 -0600
zebox
What is way correct for capture rtsp stream from IP Camera?
rtsp
Mat
779
views
1
answer
1
vote
2019-05-10 03:50:57 -0600
berak
Get pixel value of sobel Mat with C++
sobel
CvMat
Mat
pixel-access
c++
CvType
759
views
1
answer
no
votes
2019-06-05 12:22:58 -0600
Eduardo
C++ CV::Mat.at<float>(0) in Java
java
c++
Mat
1k
views
1
answer
no
votes
2019-06-06 08:30:15 -0600
hua
How to pass the cv::Mat or cv::cuda::GpuMat to custom CUDA kernel?
Mat
CUDA
1k
views
1
answer
1
vote
2019-06-13 23:51:29 -0600
berak
Java - Mat subtract returns all black image
java
Mat
Opencvcore
300
views
1
answer
-1
votes
2019-06-24 17:23:54 -0600
Tetragramm
How hard is it to only extract specific class and functions?
c++
opencv
extraction
core
Mat
highgui
5k
views
1
answer
no
votes
2019-06-28 07:07:55 -0600
LBerger
OpenCV(4.1.0) Error: Assertion failed (((0x28442211 >> ((traits::Depth<_Tp>::value) & ((1 << 3) - 1))*4) & 15) == elemSize1()) in cv::Mat::at, file c:\opencv\build\include\opencv2\core\mat.inl.hpp, line 1145
assertionerror
Mat
148
views
no
answers
no
votes
2019-07-03 22:48:49 -0600
charles
ERR “Assertion `img_input.empty() == false' failed” in convert YUV to Grayscale
bgslibrary
Mat
yuv422
1k
views
1
answer
no
votes
2019-07-04 07:34:41 -0600
berak
Printing Multi Dimension Mat using c++ in openCV
multi-dimension
Mat
print
271
views
1
answer
no
votes
2019-07-15 21:46:59 -0600
supra56
Is there a way to display cv::Mat using __android_log_print()[SOLVED]
c++
android
printf
Mat
1k
views
1
answer
no
votes
2019-07-16 11:39:02 -0600
pgorley
Display raw 12 bpp grayscale image
Mat
c++
172
views
no
answers
no
votes
2019-07-22 04:14:34 -0600
ymw
Mat array[20] to unsigned short array
Mat
array
convert
unsigined
short
447
views
1
answer
no
votes
2019-07-25 04:15:24 -0600
vinio
OpenCV throws exception when calling Mat.put() with direct bytebuffer
Mat
ByteBuffer
CV_8UC3
java
227
views
1
answer
no
votes
2019-07-25 10:51:21 -0600
holger
newbie question: working with higher dimensional mat [closed]
dnn
Mat
dimensionality
287
views
no
answers
no
votes
2019-08-12 09:36:25 -0600
berak
OpenCV mat.get(y,x)[0] == mat2.get(y,x)[0] returns true when false [closed]
java
Mat
opencv
get
compare
boolean
1k
views
no
answers
no
votes
2019-08-26 10:09:28 -0600
LorenzoEpifani
CornerSubPix function crashes on small frames
Mat
c++
cornersubpix
opticalflow
LKalgorithm
3k
views
2
answers
1
vote
2019-09-10 14:30:12 -0600
ImageProcessing_MF
Placing UYVY data in a Mat, C++
UYVY
c++
Mat
dataformat
uint8_t
image
57k
views
2
answers
4
votes
2019-09-15 10:04:34 -0600
sturkmen
How to access data from a cv::Mat
Mat
Matpixel-access
337
views
no
answers
no
votes
2019-10-03 04:24:26 -0600
Zyzyx
Error converting to Mat and performing affineWarp
java
warpAffine
highgui
Mat
BufferedImage
datatypes
275
views
no
answers
no
votes
2019-10-09 18:06:20 -0600
Jill
Smarter way to set all transparent pixel to white using Java openCV
Mat
calculation
1k
views
no
answers
1
vote
2019-11-05 11:50:58 -0600
Soumya
How to write a vector<cv::Mat> to a single file? [closed]
c++
opencv
Mat
1k
views
1
answer
no
votes
2019-11-11 05:13:18 -0600
berak
_queryDescriptors.type() == trainDescType [closed]
Mat
type
603
views
no
answers
no
votes
2019-11-16 09:28:36 -0600
Der Luftmensch
cv::Mat and cv::cuda::GpuMat containers
core
Mat
CUDA
gpumat
polymorphism
3k
views
1
answer
no
votes
2019-11-29 05:35:35 -0600
berak
Convert 3 channel Mat into 4 channel doesn't work?
conversion
Mat
mixing
354
views
1
answer
no
votes
2019-12-05 12:11:35 -0600
mvuori
Mat ctor produces heap error?!?
heap
error
Mat
c++
4k
views
1
answer
1
vote
2019-12-30 06:11:12 -0600
berak
Convert a 2D array to Mat (OpenCV) using C++, but the output of the Mat is wrong
c++
2d
array
Mat
constructor
390
views
1
answer
no
votes
2020-01-09 02:36:44 -0600
LBerger
pass mat to opencl
Mat
1k
views
1
answer
no
votes
2020-01-27 11:00:14 -0600
h22
How to convert cv::Mat* to cv::Mat?
Mat
opencv
c++
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