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467 questions
Tagged
Mat
×
1k
views
1
answer
no
votes
2018-06-30 01:47:26 -0600
berak
how to new Mat
new
opencv
Mat
959
views
1
answer
no
votes
2018-07-04 07:00:58 -0600
paatz04
Create a transparent Mat in Android
android
scalar
transparent
Mat
2k
views
1
answer
no
votes
2018-07-16 08:31:52 -0600
berak
How to do copy cv::Mat by pointer into tensor of type float?
opencv-3.4
Mat
c++
109
views
1
answer
no
votes
2018-07-19 06:02:46 -0600
berak
Convert RGBTRIPLE to cv::Mat
RGBTRIPLE
Mat
747
views
1
answer
no
votes
2018-07-23 07:03:32 -0600
StevenPuttemans
How to call imshow("", cv::Mat) from a function passed to void* ptr of trackbar callback?
Mat
opencv
c++
881
views
1
answer
no
votes
2018-08-01 12:44:32 -0600
berak
Efficient calculation with multiple cv::Mat
Mat
405
views
1
answer
no
votes
2018-08-16 23:48:58 -0600
berak
Cast CvCameraViewFrame to Mat throws Error. What to do instead?
Mat
inputframe
886
views
1
answer
no
votes
2018-10-14 02:07:00 -0600
Sid24
4 dimensional Mat in opencv JAVA
Mat
dnn
android#dnn
java
2k
views
1
answer
no
votes
2018-10-24 18:42:03 -0600
berak
Mat::at throws error: Assertion failed ((unsigned)i0 < (unsigned)size.p[0]) in opencv\build\include\opencv2\core\mat.inl.hpp, line 1100
Mat
at
1100
231
views
1
answer
no
votes
2018-10-25 01:30:02 -0600
berak
what is the most effective way to measure middle width of trapezoid? C++
c++
opencv
contours
measure
Mat
550
views
1
answer
1
vote
2018-11-07 02:26:43 -0600
berak
Loading multiple images from file to the same Mat?
imagesc
opencv
c++
Mat
307
views
1
answer
no
votes
2019-04-01 10:21:37 -0600
mdresser
Extract pixel value from Mat not working (for me)
Mat
element
pixel
access
at
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
783
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
764
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
301
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
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
1k
views
1
answer
no
votes
2019-07-16 11:39:02 -0600
pgorley
Display raw 12 bpp grayscale image
Mat
c++
274
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
2020-01-27 11:00:14 -0600
h22
How to convert cv::Mat* to cv::Mat?
Mat
opencv
c++
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
1k
views
1
answer
no
votes
2019-11-11 05:13:18 -0600
berak
_queryDescriptors.type() == trainDescType [closed]
Mat
type
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
355
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
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