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Image Analyst


Last seen: Today Attivo dal 2010

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. 40+ 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
Professional Interests:
Deep Learning with Images, Industrial Statistics, Image Processing and Computer Vision

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  • Most Accepted 2021
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Risposto
How to take a 2d slice image and convert it to a 3d image.
for k = 1 : 360 fileName = sprintf('%ddegree.tiff', k) sliceImage = imread(fileName); if k == 1 [rows, c...

circa 10 ore fa | 0

Risposto
Use variable as placeholder in a path
Try this: folder = '/Users/reubenaddison/Documents/Data/PO1/'; fullFileName = fullfile(folder, filenames{trialnumber}) % Use b...

circa 11 ore fa | 0

Risposto
How to compile .mex from folders path?
I don't understand. Like Jan said it looks like they have already been compiled into mex files. Do you want to compile your de...

1 giorno fa | 0

Risposto
using lsqcurvefit for fitting the convoluted function to the data set
You can use fitnlm to fit a sigmoid to your data. See attached demo. You can change the formula for the equation of course. ...

1 giorno fa | 0

Risposto
I am installing Matlab R2022b for Linux on Ubuntu 22.04, but when I reach the Login name process, it freezes every time.
Looks like the FAQ contains what you should do. https://matlab.fandom.com/wiki/FAQ#During_installation,_the_installer_crashes,_...

1 giorno fa | 0

| accettato

Risposto
Un-concatenate a vector to a matrix
Try this: % Define vec1: vec1 = 100; % Create mat1: mat1 = reshape(1:vec1, 10, [])' % Reshape into 10 rows.

1 giorno fa | 0

Risposto
How do I recover matlab after reinstalling the system?
Sure - give it a try.

1 giorno fa | 0

Risposto
MATLAB runtime with multiple versions on computer.
See the FAQ: https://matlab.fandom.com/wiki/FAQ#My_standalone_executable_won't_run_on_the_target_computer._What_can_I_try? When...

2 giorni fa | 0

Risposto
Conversion of (129x7 complex double) to an Image
Try exportgraphics for k=1:size(cm,2) spectrogram(cm(:,k)); baseFileName = sprintf('Spectro_Subject %d_channel %d_win...

2 giorni fa | 1

Risposto
How do I replace one value of a matrix with another value from a different matrix?
It will work but you're going to have to type something after the equals sign, like A(1,1) = B(2,2) otherwise how will it know...

2 giorni fa | 1

Risposto
license manager error -95
How did you try to "resolve the host name"? Are you sure you're connected to your license server and the internet? Did you con...

2 giorni fa | 0

Risposto
How to plot multiple plots in one figure without overwriting
Get rid of the calls to figure() clf because it's clearing everything you've plotted prior to that.

3 giorni fa | 0

| accettato

Risposto
Camera-to-circled object distance finder
Try this: % Demo by Image Analyst clc; % Clear the command window. close all; % Close all figures (except those of imtool...

3 giorni fa | 0

| accettato

Risposto
Defining and calling functions in matlab
Your script calls wbl2, not wbl. And your original wbl function function out = wbl(X) n=numel(X) A1=X(:,1); A2=X(:,2); %o...

3 giorni fa | 1

Risposto
How do I know the length of line?
See examples in the help for imdistline help imdistline

3 giorni fa | 0

Risposto
extracting the count and size of white dots as a function of its location
See my Image Segmentation Tutorial in my File Exchange: Image Analyst's File Exchange It's a generic, general purpose demo of ...

4 giorni fa | 0

| accettato

Risposto
How to find the mean of a histogram without the mean function?
What about a for loop summing up the values then dividing by the number of items you summed? data = rand(100); trueMean = mean...

4 giorni fa | 0

| accettato

Risposto
I know the coordinates of several scattered points in space, how can I fit them to a sphere?
It looks like the input data for both functions is an N-by-3 matrix. See this paper Least-squares orthogonal distances fitting ...

4 giorni fa | 0

| accettato

Risposto
Error using actual and detected edge image sizes must be same error.
@DGM has the right answer. For more on this, see Steve's blog: Too much information about the size function | Steve on Image P...

4 giorni fa | 0

Risposto
Unclear periodicity output with daily temperature dataset using periodogram
I agree with everything Star said - I was going to say the same things. But what is "background"? Does that change seasonally?...

4 giorni fa | 0

Risposto
How to alter or hide caret in command window.
I've never seen a black block cursor (unless I'm in overtype mode). Mine is always a thin vertical line. Check to make sure yo...

4 giorni fa | 0

Risposto
Can't open files
Try changing the first few lines of the function to this function varargout = parse_directory_for_dicom(dirname) dirListing = ...

4 giorni fa | 0

Risposto
How to skip the first line of a text file when reading it?
Try readlines: allLines = readlines('ab.txt') % Gets every line into a cell. % Skip first two lines allLines = allLines(3:end...

4 giorni fa | 0

Risposto
Extracting features from a hyperspectral image
You're asking too much. We can't give you a lesson-by-lesson course on hyperspectral imaging. Try searching online for one. H...

4 giorni fa | 1

| accettato

Risposto
How do I measure distances in an Image
Use bwferet. Let me know if you can't figure it out on your own. help bwferet Alternatively you could use bwboundaries follow...

4 giorni fa | 0

Risposto
Is it possible to select two points automatically from an image?
Explain why those two particular lines were picked? I see nothing special about them or any different than any other point in t...

5 giorni fa | 0

Risposto
Image fft2 metric?
You can use the attached algorithm to find the orientation of the pixels.

5 giorni fa | 0

| accettato

Risposto
How to overlay an image on a surface plot?
See attached demo for how to overlay a color image on a surface plot of a gray scale image. Adapt as needed. % Demo to creat...

5 giorni fa | 0

Risposto
How can I generate a trigonometric formula for the following case?
Try this: Theta= [39.8414239035357 38.0423831220740 35.9925962696569 33.6629179282453 31.0086860615562 27.9576609766453 24.38...

5 giorni fa | 1

Risposto
How can I segment all buildings in the image?
Published papers are here: http://www.visionbib.com/bibliography/contentscartog9.html#Cartography,%20Aerial%20Images,%20Buildin...

5 giorni fa | 0

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