Steve Eddins

Retired, MathWorks

Last seen: Today | Actif depuis 2011

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Retired from MathWorks in 2024 after 30 years of service. Can now be found at MATLAB Central and steveeddins.com. MathWorks career included image processing, toolbox development, MATLAB development and design, development team management, MATLAB design standards, Steve on Image Processing blog (https://blogs.mathworks.com/steve). Co-author of Digital Image Processing Using MATLAB (https://www.imageprocessingplace.com/DIPUM-3E/dipum3e_main_page.htm). French horn enthusiast, member of Concord Orchestra and Melrose Symphony, member of the board of Cormont Music and the Kendall Betts Horn Camp

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English
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Where is the programmable setting corresponding to the Live Editor default view?
The settings UI panel for MATLAB -> Editor/Debugger -> Display includes this control: Where can I find the corresponding pr...

environ un mois il y a | 1 réponse | 2

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Are there any faster alternatives to readlines?
Try this: Read the file using fileread. Convert to string. Call split. Using Walter's idea for a sample text file: filename...

environ un mois il y a | 1

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Vertical blank space in tiledlayout compact
Trying setting TileSpacing to compact or tight. t=tiledlayout(2,2,'Padding','compact','TileSpacing','compact'); Or: t=tiledla...

7 mois il y a | 1

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What is the Image Processing Toolbox Convention for Input to freqz2() ?
The convention for Image Processing Toolbox filter design functions is for the filter to be specified as a correlation kernel. T...

8 mois il y a | 1

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Axes in dialog box turn blank after calling imagesc in pushbutton callback
This is a strange one. The primary trigger for the unusual behavior is that the dialog function creates a figure with an empty c...

presque 2 ans il y a | 2

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How to measure the correct circularity??
R2023a Update: Correcting regionprops Circularity Measurements That Are Greater Than 1.0 Image Processing Toolbox R2023a or Lat...

presque 2 ans il y a | 1

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How to detect circularity more accurately than 4*pi*A/P^2?
R2023a Update: Correcting regionprops Circularity Measurements That Are Greater Than 1.0 Image Processing Toolbox R2023a or Lat...

presque 2 ans il y a | 3

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regionprops circularity value >1 and 0 ?
R2023a Update: Correcting regionprops Circularity Measurements That Are Greater Than 1.0 Image Processing Toolbox R2023a or Lat...

presque 2 ans il y a | 2

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What is the easiest way to plot a circle annotation that maintains its shape regardless of figure dimensions?
You can position a circle with the center specified in axes data space by plotting a single point using a circle marker. You can...

plus de 2 ans il y a | 0

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Saving figure in jpg with 600 dpi
The function exportgraphics generates and saves the image at the specified resolution, but it does not write resolution info int...

plus de 2 ans il y a | 4

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How to remove thin lines from the following image?
Try using the 3rd output of imfindcircles (metric) to distinguish the bigger droplets that aren't really circles.

plus de 2 ans il y a | 0

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Convert RAW file (NEF) to CIELab
You could use the Image Processing Toolbox function raw2rgb to convert your raw NEF to sRGB values, and then you could use the r...

plus de 2 ans il y a | 0

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How can I change a square wave into a sign wave with the graph provided?
Try removing the call to the sign function.

plus de 2 ans il y a | 0

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label two objects that share part of the same boundary separately
m = [0,1,1,1,0;1,0,0,0,1;0,1,1,1,0;0,1,0,1,0;0,0,1,0,0] Fill the holes. From your example, it looks like the background connect...

plus de 2 ans il y a | 1

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Extracting bright spots on image
Try something like the following: Convert to grayscale (using rgb2gray). Use imextendedmax to pick out the bright peaks. You'l...

plus de 2 ans il y a | 1

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Saving to .mat without additional struct.
Try this: s = load("test2.mat"); aircraftdata = s.test;

plus de 2 ans il y a | 1

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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...

presque 3 ans il y a | 0

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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...

presque 3 ans il y a | 0

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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...

presque 3 ans il y a | 0

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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 ...

presque 3 ans il y a | 0

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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 ...

presque 3 ans il y a | 1

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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...

environ 3 ans il y a | 0

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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...

environ 3 ans il y a | 1

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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,...

environ 3 ans il y a | 1

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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...

environ 3 ans il y a | 0

Réponse apportée
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...

environ 3 ans il y a | 1

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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...

environ 3 ans il y a | 1

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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...

environ 3 ans il y a | 1

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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...

environ 3 ans il y a | 0

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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...

environ 3 ans il y a | 0

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