Image Analyst

Last seen: 1 day ago | Active since 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

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Answered
How do I loop plots part2
How is this any different than what I showed you here: https://www.mathworks.com/matlabcentral/answers/1564796-how-do-i-plot-di...

21 hours ago | 0

Answered
How can I include absent group names in table grouping results?
Try this: teamMembers = {'Al','Betty','Charles','Denice','Edward'} %Example Data Name = {'Denice';'Denice';'Al';'Charles';'Al...

22 hours ago | 0

Answered
In table, replace NaN with Text (from NaN to "ABCD")
Like Jan says, you can't do it. Numbers are numbers and characters/string are characters/strings. You could do it with a cell ...

22 hours ago | 0

Answered
How do I plot different fields of a structure in a loop?
Use dynamic field names: % Create sample data MCR_full.MIB035.Reaches.R32.kin = rand(100, 3) MCR_full.MIB035.Reaches.R33.kin ...

23 hours ago | 0

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Answered
Stop using suggested word on right arrow
You can just keep typing and as long as you're not typing letters from example, the example should go away. For example if you ...

23 hours ago | 0

Answered
Bug in equality checks? 28.15e-3 == 28.15/1000 false
See the FAQ: https://matlab.fandom.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F and use ismembert...

1 day ago | 0

Answered
plotting two lines intersecting at a certain point
You can scan the data, fitting each portion (left and right) to a line. Then find where the difference in slopes of the lines i...

1 day ago | 0

Answered
99x99 matrix
Another way, even more compact: A = eye(99) | fliplr(eye(99)) As long as it's not your homework you can use my code.

1 day ago | 1

Answered
99x99 matrix
As long as it's not your homework you can use my code: A = min(1, eye(99) + fliplr(eye(99)))

1 day ago | 0

Answered
How can I build a matrix with an increasing number of terms in each row?
If you're willing to use a cell array instead of a regular matrix, you can do this: n = 50; ca = cell(n, n) for row = 1 : n ...

1 day ago | 0

Answered
how do I change numbers to dates?
Use the datetime() function and the month() function: monthNumberArray = 1:12; % Vector of whatever months you want. t = date...

2 days ago | 0

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Answered
new to image processing and will like to get some guides for this question. Add sine wave noise to the image and then remove it by band-reject filtering and notch filtering.
That's pretty much what my attached demo does. Adapt it as needed.

2 days ago | 0

Answered
The longest consecutive values in a vector and the position at which it starts and ends
If you have the Image Processing Toolbox (like most people do), you can use bwareafilt() to extract the longest run. Then the c...

2 days ago | 0

Answered
surf command doesn't plot the value next to NaNs values
How about if you just interpolate over the nans with the regionfill() function? load M_array % Fill nan holes in M_array. n...

2 days ago | 0

Answered
Why is the working directory opening to the launch directory upon launch?
Not sure why your preference is not adhered to. Try this workaround by setting the folder in your startup.m file: >>edit start...

2 days ago | 0

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Answered
Why is this error comming?
We can't run an image. You should have posted your code as code. It looks like A has 6 elements, whereas b has only 2 elements...

2 days ago | 0

Answered
Draw the ezplot for the function 𝑥^ 2 + 6𝑥 + 55
I never use ezplot() - I just specify the range and other options explicitly. You might try this: x = linspace(-10, 10, 1000);...

2 days ago | 0

Answered
Plz guide, if I have made this loop correct?
Looks correct to me, though I can't run it because you didn't supply many of the variables inside it. Why do you ask? Do you h...

2 days ago | 0

Answered
Borghi Diagram in MATLAB
You can use xlabel(), ylabel(), plot(), and text(). And annotation() or line() for the little lines.

3 days ago | 1

Answered
Plot an equation with a range
Try this v = linspace(-100, 50, 1000); Then plug that v into the formulas that need it. Like alpham = (0.1 * (v + 40)) ./ (1...

3 days ago | 0

Answered
How to find number of Pixel green colour image by using webcamera
Use the Color Threshold app on the Apps tab of the tool ribbon to define "green". Full demo is attached.

3 days ago | 0

Answered
Could you please help me to fit 2 circles so as to detect left and right half of breast?
You just have to add the circle fitting code like I told you in your duplciate question: % Find the leftmost point and don't in...

3 days ago | 1

Answered
Plot values of 3D matrix against a single variable
Try this: clc; % Clear the command window. fprintf('Beginning to run %s.m ...\n', mfilename); close all; % Close all figu...

3 days ago | 1

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Answered
homework help with a statics programing question?
Which variable is taking on the value of 180? Double the number of comments. Add fprintf('Written by Michail Popovits on Octo...

4 days ago | 0

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Answered
how to unscramble a .wav file to find the actual voice?
Try getting the fft, copying and pasting the chunks into their desired location (frequencies) and then inverse fft. Something l...

4 days ago | 0

Answered
How can I create a function that updates a structure whose input is that structure?
Just have the output be the input: To call data_raw = AlterStructure(data_raw ); To define function data_raw = AlterStructur...

4 days ago | 1

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Answered
Are there any examples showing how to perform Monte Carlo simulation in MATLAB?
For what it's worth, I'm attaching three of my Monte Carlo demos.

4 days ago | 0

Answered
How to change image size to, say 128?
I think most (or all?) network architectures are built to expect a certain size image upon input. I don't think you can just ch...

4 days ago | 0

Answered
Sampling pixel intensities according to distance matrix...
Use splitapply() which was meant for this kind of thing: MatX = [2 1 2; 1 0 1; 2 1 2] % And an image, let's call it Mat(Y), co...

4 days ago | 0

Answered
Odd or even function
Hint: rem() or mod() How do I get help on homework questions on MATLAB Answers? - MATLAB Answers - MATLAB Central

4 days ago | 1