Answered
Find consecutive numbers below threshold using bwlabel
You could a hysteresis thresholding technique. First, threshold with a strict threshold, like your 0.5. Then, threshold with a s...

1 year ago | 0

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Answered
3D Plot shrinks one dimension when plotting Alphashape
The plot method for alphaShapes sets the data aspect ratio to [1 1 1]. When your code arrives at line 76, the data aspect ratio...

1 year ago | 0

Answered
Use Geographic Plots in tiledlayout without multiple axis
From the doc for nexttile: "nexttile creates an axes object and places it into the next empty tile of the tiled chart layout tha...

1 year ago | 0

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Published

More experiments with sRGB gamut boundary in L*a*b* space
I'm still playing around with RGB gamut calculations in $ L^* a^* b^* $ space. (See my last post on this topic, "Visualizing...

1 year ago

Answered
Is this another bug in imread(), or is this just a forum problem?
I can reproduce the problem in MATLAB Answers. The problem does not occur in MATLAB Online or in the desktop version. I'll let ...

1 year ago | 0

Answered
How to use "imregister" with "InitialTransformation"?
The value of InitialTransformation is supposed to be an affine3d object, not an imref3d object. See the doc description for the ...

1 year ago | 1

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Published

Puzzles About GIF DelayTime
[TLDR: To create a fast GIF animation using imwrite, use a DelayTime of 0.02 instead of 0.]In my 28-Feb-2022 post, I showed...

1 year ago

Published

Loren Shure and the Art (and History) of MATLAB
The one and only Loren Shure has just announced her retirement from MathWorks. I met Loren in early 1993 at the...

1 year ago

Published

R2022a
It's March, and you know what that means --- that's right, the "a" release is here!On most work days, I use several...

1 year ago

Answered
WebREAD returns zeors when reading a GIF image
I got an array of zeros once using your code, but later I ran it again and got the expected image data. I quit MATLAB and launch...

1 year ago | 0

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Answered
imwarp function - bands during interpolation
First, let me run Arnaud's reproduction code and display the result so that everyone can see what we are talking about. Im1 = r...

1 year ago | 1

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Published

A Short Game of Life
I have written here, as well as in Digital Image Processing Using MATLAB, about using image processing operations to...

1 year ago

Answered
Check for missing argument or incorrect argument data type in call to function 'head' - using Matlab R2020a
The function head is only defined for an input that is a table, a timetable, or a tall array. When trying to execute your code,...

1 year ago | 1

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Answered
Getting imaginary numbers for induction factors; I am getting imaginary number for my induction fact Aa and At but I am not using any sqrt to calculte. Thank you.
The acos function returns complex values if the inputs are outside the interval [-1,1]. Set a breakpoint on the line where you a...

1 year ago | 0

Answered
Filling one type of holes in a binary image
Based on your description of what you're trying to do, I ask the question: how are the semi-rectangular grains, which you want t...

1 year ago | 1

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Answered
How to remove extrapolated regions of a grid created with scatteredInterpolant?
You could try using an alpha shape to postprocess (mask) Z. Original code dx = 5; %grid step load('datapoints.mat'); F = s...

1 year ago | 1

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Answered
How to create a filling/shading between prediction bounds?
I can't completely run your code (s and Asiiimodel are missing), but I think that the black color in your patch result is from t...

1 year ago | 1

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Answered
FFT function is not functioning.
It seems that you may have tried to install MATLAB on a cloud drive (OneDrive). Or maybe you copied the application files into O...

1 year ago | 0

Answered
How do I transform this format 202007011030 (2020 07 01 10:30) into a readabel format?
I can imagine several ways to do this. Here is one. lines = readlines("Fehmarn_Wind_date.txt"); readlines was introduced in R2...

1 year ago | 0

Answered
ROI Trace boundaries result
I think some careful coordinate system tweaks will get you there. In many Image Processing Toolbox functions, pixels are treated...

1 year ago | 2

Answered
How is the 2D filter function used in this code?
For each element in A, filter2 essentially "slides" the filter F so that its center lines up with the element in A, and then it ...

1 year ago | 1

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Answered
Changing color of pixels around certain pixels
Suppose mask is a logical matrix that indicates which pixels satisfy your condition. (That seems to be the purpose of idx in you...

1 year ago | 2

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Answered
Colorbar range inconsistent in high aspect ratio images
Call axis image before you create the colorbar and set its tick labels. When you set tick labels manually, a mode is set so that...

1 year ago | 0

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Published

Visualizing out-of-gamut colors in a Lab curve
I was looking today at an old post, "A Lab-based uniform color scale" (09-May-2006). I wanted to provide an update to...

1 year ago

Published

Peaks, Peak Filtering, and Gray-Scale Weighted Centroids
Today, I'm continuing my recent theme of thinking about peak-finding in images. When I wrote the first one (19-Aug-2021), I...

1 year ago

Published

Small-Peak Suppression with the H-Maxima Transform
Last time, I introduced the idea of a regional maximum. Today, I want to add a concept that makes the regional maximum more...

1 year ago

Published

Local maxima, regional maxima, and the function imregionalmax
A recent algorithm discussion on the Image Processing Toolbox development team reminded me of something I originally wanted...

2 years ago

Answered
Can a MATLAB function edit the input?
You'll need your class to subclass handle. See the documentation page "Implementing Linked Lists with Classes" for details.

2 years ago | 0

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Published

Use less meshgrid and repmat
The functions meshgrid and repmat have a long and rich history in MATLAB. Today, I'll try to convince you to use them...

2 years ago

Answered
Matlab working very slow on my m1 MacBook Pro
See this answer and follow it for updates related to this problem.

2 years ago | 2