Image Analyst

Last seen: 1 day ago | Active since 2010

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Senior Scientist (male/man) and Inventor in one of the world's 10 largest industrial corporations doing image analysis full time. Ph.D. in Optical Sciences specializing in imaging, image processing, and image analysis. 44+ years of military, academic, and (mostly) industrial experience with image analysis programming and algorithm development. Experience designing custom light booths and other imaging systems. Experience with color and monochrome imaging, video analysis, thermal, ultraviolet, hyperspectral, CT, MRI, radiography, profilometry, microscopy, NIR and Raman spectroscopy, etc. on a huge variety of subjects. Member of the Mathworks Community Advisory Board. Be sure to click "View All" in my File Exchange to see ALL of my demos and tutorials: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862 Professional Interests: Image analysis and processing

Programming Languages:
MATLAB, Visual Basic
Spoken Languages:
English
Pronouns:
He/him
Professional Interests:
Image Data Workflows, Industrial Statistics, Image Processing and Computer Vision

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How to do background subtraction between two images
@Khai your code and the other answer's code here is not correct. You cannot just subtract the pseudocolored images. They MUST ...

1 day ago | 0

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readtable error!!! Previously, readtable worked, but suddenly one day it started throwing an error.
Try it this way: [EDIT -- now tested with folder with CSV files in it] % Initialization steps. clc; % Clear the command wi...

1 day ago | 0

Answered
Identifying Boundary Nodes in a Point Cloud
Maybe use either pdist2 or knnsearch to identify blue points that are closest to red points. In other words, pairs that have mi...

2 days ago | 0

Answered
I received a message : "We are unable to offer you a trial." Why?
Perhaps you are already running a trial version. Perhaps you are asking for a second one too soon after you asked for the first...

2 days ago | 0

Answered
Error using .* Array sizes must match.
Add these extra lines and tell us what you see in the command window: whos mNet whos y_max whos I whos Dnet whos Q whos t ...

3 days ago | 0

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como resolver este en matlab
What do you want to do? Plot it? Integrate it over some area? ¿Qué quieres hacer? ¿Graficarlo? ¿Integrarlo en alguna zona? f...

3 days ago | 0

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hello Dear!! I'm a new coming in the community I want your help. about coding on MATLAB does the code is correct ? or the using of (&&) is no faire? and how can I correct it? thank you for respond .
The double && is correct. However you don't need to do a logical comparison to true. If it's true, then app.LikeCheckBox.Value...

4 days ago | 0

Answered
How to remove all NaN and Inf values when calculate the mean?
@Amy You might try interpolating the values, for example: % Create data with good values and inf and nan values. v = [10, nan,...

4 days ago | 1

Answered
matlab r2024b download problem
With R2024b, which I just downloaded and installed on a Windows computer yesterday, it first downloads a ~230 kb stub program. ...

4 days ago | 0

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How to remove the background of the images?
MATLAB now has the "Segment Anything Model". See https://www.mathworks.com/help/images/getting-started-with-segment-anything-mo...

4 days ago | 0

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Script for running all .m files in a large file folder with sub folders.
OK. Good luck with it. You might find the FAQ: helpful: Process a sequence of files To get a list of all m-files in your top ...

6 days ago | 0

Answered
kinect depth image thresholding
From the RGB image, it looks like it's looking at a flat computer screen. And since that's mostly flat it makes sense that ther...

7 days ago | 0

Answered
R2024b: documentation installed locally - how can I bookmark help pages?
Can you go to your router settings and assign your computer a static IP address? You should be able to.

8 days ago | 0

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Need help writing a matlab function.
Replace all your [1, 2, 3; 4, 5, 6] by A. Replace output = hw4_problem1(A) by output = hw4_problem1(A, n) A is a vector, no...

8 days ago | 0

Answered
Is it possible to make this if statement more concise?
Try % Create three row vectors using linspace, colon operator, and [list] V1 = linspace(2,53,84); V2 = 1:2.3:48; V3 = [1, 42...

8 days ago | 1

Answered
Calculating Perpendicular Distance Between Detected Edge and Smoothing Function
You could just do a brute force search. Here is untested code. closestDistances = zeros(1, numel(redx)); for k = 1 : numel(re...

10 days ago | 0

Answered
行列を計算して，代入をしたいのですが，サイズが異なるためできないといわれてしまいます．教えてください．
If you have any more questions, then attach your data and code to read it in with the paperclip icon after you read this: TUTOR...

11 days ago | 0

Answered
Finding a pattern in a table and the coordinates of the "first hit"
Another way is to use ismember % Load data from .mat file. S = load('Andrew Table.mat'); t = S.Table; % Extract first column...

11 days ago | 1

Answered
Slow initialization at startup during the "Ready" step
I don't think it should take over 3 minutes to start MATLAB. On my old, slow, severely memory- limited 8 GB Windows computer, i...

11 days ago | 0

Answered
Can someone help to teach how i want to upload this file into matlab and try preprocessing ?
See the FAQ for code samples: Process a sequence of files

11 days ago | 0

Answered
what is subplot and how to use it?
Imagine an N by M array of little graphs on your figure. Those are the rows and columns. The third arg is the number of the plot...

11 days ago | 18

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Answered
Merging uniform boxes into larger ones
How about just using the convex hull? boxGrid= [... 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 ...

13 days ago | 0

Answered
How to draw spectrum of signal?
Did you try plot()? fm = 1000; % whatever f = [0, 0, fm/2, fm]; X2 = [0, 1, 1, 0]; plot(f, X2, 'r-', 'LineWidth', 4); xlabe...

13 days ago | 1

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Answered
How to get segmented image using k-means clustering ?
I can't follow your code without putting a lot more time into it. There are not enough comments. It looks like you're trying t...

13 days ago | 0

Answered
I encountered an 'invalid use of operator' error message.
You forgot quotes. Corrected: load(fullfile('E:\charite\Data\EGCG_Round3\MRE\MouseAtlasReg\ProcessedShort\20241024_sl_MRE_Day1...

14 days ago | 0

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Get the figures that video created
"i'm trying to upload the video" <== where (what site) are you trying to upload your video file to? Is the destination folder a...

18 days ago | 0

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Warning: Equation is badly conditioned. Remove repeated data points or try centering and scaling.
What if you just scanned your data with movmean to get the local mean, and movstd to get the local standard deviation, and then ...

19 days ago | 1

Answered
How to save frames to a video?
Please see my attached demo on how to make a movie from figures/axes/frames. Probably the simplest demos is movie_made_from_sur...

19 days ago | 0

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Answered
How can I remove dark background in satellite label
Not sure exactly what function you used to put the text label on, like text or insertText, but look at those functions for an op...

19 days ago | 0

Answered
How to get multiple function generated plots to generate from a single MATLAB script
To get it to plot in a new figure, you need to call the figure() function. Otherwise it just blasts over the old/existing figur...

19 days ago | 0

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