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Matt


Last seen: 2 months ago |  Active since 2022

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How to solve mex function error caused by libstdc++ library version mismatch ?
Hello, When compiling a mex function, and running it right after, I get an error saying : Invalid C++ MEX-file 'myfun': /usr...

6 months ago | 1 answer | 0

1

answer

Answered
What could alter the behavior of a c++ library in a mex function ?
This question was almost two years ago, but I came back to it and find out that evaluating my mex function in another process us...

6 months ago | 0

| accepted

Question


Effectiveness of implicit and explicit parallelization of fft2
Hi, I have many images on which I want to do some FFTs. I want to accelerate this image processing with multithreading. I am ...

8 months ago | 2 answers | 0

2

answers

Answered
Creating an accurate Doppler spectrogram visualization
Well there is quite a long way to go from this figure to a fully functionnal app like the one you are showing ! What you need i...

1 year ago | 0

| accepted

Question


access time of data in cell array vs matrix
Hello I am doing operations (denoising/detection etc) on images and it seems that it is faster to store them in a cell array ra...

1 year ago | 2 answers | 1

2

answers

Question


How to plot a surface not sampled on a gid/mesh
Hi Is there a function that could plot a 2D surface defined on non meshed points ? In other words, if I have a surface defined...

1 year ago | 1 answer | 0

1

answer

Answered
HOW TO FFT A NOISY EARTHQUAKE DATA
You can directly compute your signal FFT as star strider did and you will see that something is happening around 5Hz. An issue ...

1 year ago | 0

Answered
How to randomize order of functions
Hi, By curiosity in what context do you need to do something like this ? You can store the functions handles in a cell and ca...

1 year ago | 0

Question


Clib is unable to load an interface library
Hello, I have a c++ shared library that I want to call from matlab using clib. Unfortunately when doing so clim seems to be ...

1 year ago | 2 answers | 0

2

answers

Question


No out of memory error but matlab crash
Hello, I use matlab 2022a on ubuntu 20.04. These two codes crash matlab without generating an error message : ii=1; while 1...

1 year ago | 2 answers | 0

2

answers

Answered
Objective function is returning Inf or NaN values at initial point. lsqcurvefit cannot continue.
If you try this : modelFun(b0,x) the output has a nan. So you need to rework your function modelFun() in order to avoid this.

1 year ago | 1

| accepted

Answered
A faster replacement for 'imfindcircles'
Il almost works but not quite because you can integreate a lot of signal in between 2 or 3 particles If you add another paramet...

1 year ago | 0

Answered
How to sum values from a cycle
I think you are looking for this https://fr.mathworks.com/help/matlab/ref/sum.html angle = [30 25]; % 2 angles sum(angle) You...

1 year ago | 1

Answered
A faster replacement for 'imfindcircles'
Hi Do you need a radius estimation of your circles ? And do you need to test a list of radius or do they all have the same know...

1 year ago | 0

Answered
What could alter the behavior of a c++ library in a mex function ?
I am upping this question. Even Chatgpt could not help me. Who wants to beat the ai ?

2 years ago | 0

Question


Is it possible to display text in the console using latex expressions ?
Hello, I would like to display in the console grec letters using the latex syntaxe. Is there a way do this ? For exemple I ca...

2 years ago | 1 answer | 0

1

answer

Answered
Error with "input" function
The function codeA = input('Code of the first participant: ', 's'); creates a string variable in your environnement called c...

2 years ago | 1

| accepted

Answered
Plotting a 1D function by hovering on a 2D plot
You can use impixelinfoval to get the position of your cursor and a callback function to update the figure clear close all i...

2 years ago | 0

| accepted

Question


How to unpack mono12packed data images from preview
Hello, I am using the image acquisition tool to control a camera and I would like to know how to use preview properly when the...

2 years ago | 1 answer | 0

1

answer

Question


Camera using the genTL interface disappears when using imaqreset
Hello, My pc is connected to a USB camera that I want to control through the genTL interface. I have two types of unexpected b...

2 years ago | 1 answer | 0

1

answer

Question


What could alter the behavior of a c++ library in a mex function ?
Hello, I am trying to interface a camera to matlab in a context of development of a microscope. The idea is to control it (c...

2 years ago | 1 answer | 0

1

answer