Question

(matlab online)Error double clicking to open any m/mlx file in the left “current folder”?
In the latest version R2023b of matlab online, double-click to open any m/mlx file in the "Current Folder" column on the left si...

1 year ago | 1 answer | 0

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Is it computationally redundant to solve the optimal rigid transformation with joint SVD+RANSAC?
By carefully reading the MATLAB and OpenCV source code, fortunately I discovered part of the reason for the time-consuming proce...

1 year ago | 0

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Question

Is it computationally redundant to solve the optimal rigid transformation with joint SVD+RANSAC?
I randomly used two sets of 2D point sets to estimate the optimal rigid transform (or similar transform) to performance, and use...

1 year ago | 1 answer | 0

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Look up Table based Lens Distortion Correction
I've written an example, you might want to refer to it here https://ww2.mathworks.cn/matlabcentral/fileexchange/118170-use-open...

1 year ago | 0

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(call python)Can matlab use multiple variables to receive separate tuple values returned from python functions?
When a python module function is called in matlab and the python function returns a tuple value, is it possible to assign each e...

1 year ago | 1 answer | 0

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matlab live script support run Python language directly
I now believe that the above "new feature" cannot be integrated into future versions of MATLAB because it does not follow the lo...

1 year ago | 0

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Question

matlab live script support run Python language directly
Luckily Mathworks has started to focus on the interaction between MATLAB and python in the last few years, rather than comparing...

1 year ago | 2 answers | 0

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I cannot enable 3D view in the driving scenario designer app [It may be related to the Ubuntu system]
The 3D simulation in drivingScenario APP "3D Display >View simulation in 3D display" is currently only supported on Windows, mai...

1 year ago | 0

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How can I read a .json file?
My personal opinion is that there is still no direct mapping from a generic readable json file to MATLAB's built-in types (struc...

1 year ago | 0

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matlab live script support markdown syntax?
Luckily, I learnt that R2023b which will be released next month will start to support mlx file to export markdown file, althoug...

1 year ago | 1

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Question

Generating corresponding C++ interface class function signature inline behaviour for MATLAB classes not as expected?
Descriptions： I would like to generate C++ classes for the MATLAB built-in object function poseGraph and its object functions, ...

1 year ago | 1 answer | 0

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(matlab coder) Unable to package?
MATLAB's built-in packing function( "Package Code" button or packNGo) has not been updated in time for the new factorGraph suppo...

1 year ago | 1

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Question

(matlab coder) Unable to package?
When I try the following code for C++ class generation,It can be generated successfully, but it fails to be packaged, I get the ...

1 year ago | 1 answer | 0

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Question

How to integrate codegen generated multiple different C projects using calls to generated functions?
As far as I know through internet searching, in order to fuse multiple code/functions generated by codegen in one big project, y...

1 year ago | 1 answer | 0

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How to classify multitasking and multi-label in MATLAB using deeplearning?
Multi-label classification can be done by changing the loss function to "binary cross-entropy loss", as far as I can remember, u...

1 year ago | 0

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MATLAB coder:It's time to improve the efficiency and universality of cv(computer vision) toolbox code generation
The Matlab Coder Toolbox™ is a very useful toolkit, but its code generation is often unsatisfactory and some users use it to gen...

1 year ago | 0 answers | 0

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Non linear least square fitting
I offer here a robust least squares fit for reference purposes only. %% Create randome points along a circle r = 1; numPts = ...

1 year ago | 0

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（Enhancement Request）how to Create data files that the generated code reads at run time to support C/C++ code generation?
As far as I know, coder.write and coder.read are functions that support serialisation/deserialisation at runtime in R2023a. code...

1 year ago | 1 answer | 0

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Question

Non-constant expression or empty matrix. This expression must be constant because its value determines the size or class of some expression.
How should I correctly pass in variable structure fields to support C/C++ code generation? My problem is simplified by the fact ...

1 year ago | 1 answer | 0

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Question

How do I pass the correct string for a function input parameter?
For example, I want to debug a mex file using valgrind in a linux terminal and need to pass in a string using the following comm...

1 year ago | 1 answer | 0

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libtiff.so.5: version `LIBTIFF_4.0' not found (required by *.so) for matlab in ubuntu environment?
I solved the problem using the following： sudo rm -rf /usr/local/MATLAB/<MATLAB_RELEASE>/bin/glnxa64/libtiff.so.5 sudo ln -s /...

1 year ago | 1

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Question

libtiff.so.5: version `LIBTIFF_4.0' not found (required by *.so) for matlab in ubuntu environment?
When running a mex file or mixing it with the opencv library, an error like the one below occurs, how do I fix it? libtiff.so....

1 year ago | 2 answers | 0

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Matlab crashing in ubuntu when using MATLAB coder
1. Ubuntu 18.04/20.04 has libcanberra-gtk3-module (gtk-3.0+) installed by default, and Matlab needs to call the gtk-2.0+ canberr...

1 year ago | 1

Question

matlab uses "which" to find a file that shows up as a built-in function location, but why doesn't the file actually exist?
which some-built-in-function filename = "some-built-in-function-path"; if isfile(filename) disp("this file exist") else...

1 year ago | 1 answer | 0

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performance: vision.AlphaBlender is slower when image is big.
There are many ways to solve this, such as rewriting the implementation of this function yourself in C/C++ and wrapping it as a ...

1 year ago | 0

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Answered
Why does MATLAB crash on Linux with "Inconsistency detected by ld.so: ../elf/dl-tls.c: 597: _dl_allocate_tls_init:"
1. Ubuntu 18.04/20.04 has libcanberra-gtk3-module (gtk-3.0+) installed by default, and Matlab needs to call the gtk-2.0+ canberr...

1 year ago | 9

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(matlab coder)How should the coder::array member function set convert opencv's mat type to its type in-place?
After repeated investigations and trials over this period of time, in relation to my current problem, I have found out what the ...

1 year ago | 0

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Question

(matlab coder)Generating C++ code for scalar string results in a garbled last character?
my entry-point codegen function: function out = useImageAndString(imagePathstr)%#codegen arguments imagePathstr (1,1) s...

1 year ago | 1 answer | 0

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Question

(matlab coder)How should the coder::array member function set convert opencv's mat type to its type in-place?
When using matlab coder to generate C++ code, the generator automatically generates a C++ class for coder::array, which is defin...

1 year ago | 2 answers | 0

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Question

(question)How does the arguments syntax apply multiple optional type restrictions to one of the input arguments?
For example, I need to restrict the type of the input argument inImage to "uint8" or "logical" or "double" for the following sig...

1 year ago | 1 answer | 0

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