Image Analyst

Last seen: Today | 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. 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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Answered
Is there a method to capire similarity between two images?
See https://en.wikipedia.org/wiki/Content-based_image_retrieval#Content_comparison_using_image_distance_measures In MATLAB, you...

7 hours ago | 0

Answered
How to change the scale of color bar to discrete ?
Try this. Adapt as needed: % Read in sample image. grayImage = mat2gray(imread('cameraman.tif')); % Make a colormap with 10 ...

11 hours ago | 0

Answered
Polynomial fit of a wavefront profile
I'm not familiar with that optical technique. Is a "wavefront gradient profile" the same as a "wavefront profile"? You refer t...

11 hours ago | 0

Answered
I WANT TO EXTEND MY X-AXIS
Not sure what you want. I'm guessing it's either repmat or xlim

1 day ago | 0

Answered
I am plotting streamflows on a drainage map for a region. I want to make the lines thicker and more evident in the image shown. Any suggestions on how to make that possible?
With many plotting/graphics functions there is a 'LineWidth' option. Look for that.

1 day ago | 0

Answered
Getting average for a range of data on a plot. Not entire range, only for a section.
"I just need the mean value of all the values at steady state." <== So use histogram or histcounts.

1 day ago | 0

Answered
Function output does not get recocnized
When you click Start, this code runs: % Value changed function: StartButton function StartButtonValueChanged(app, event) ...

1 day ago | 0

Answered
DRAW LINES POINT TO POINT WHITH GINPUT
See attached demos.

1 day ago | 0

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HOW CAN I DRAW POINTS WHIT GINPUT AND THEN JOIN THEM WITH A LINE
See attached demo.

1 day ago | 0

Answered
HOW CAN I CREATE REFERENCE AXES ON A 2D PLANE THAT ALLOWS ME TO DRAW AT THE INTERSECTIONS OF SUCH AXES?
Perhaps put the tick marks at the origin? ax = gca ax.XAxisLocation = 'origin'; ax.YAxisLocation = 'origin';

1 day ago | 0

Answered
how to export image classification results in excel sheet
Exactly what results do you want to export? Screenshot please. If you have it in a variable, you can use writetable or writece...

2 days ago | 0

Answered
Regionprops handling of big images
How big is your bs.data binary image? I would start by trying to delete any variables the in workspace that you don't need anym...

3 days ago | 1

Answered
I can't find the ranova function
You probably don't have a license for it because I see that function should be in that toolbox since 2014. What happens if you ...

4 days ago | 1

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Answered
Create mesh from matrix
Not sure what you mean by "plot" but to view a and b as 2-D images and 2.5-D surface plots: subplot(2, 2, 1); imshow(a, []); ...

4 days ago | 0

Answered
How to plot a "Bean-shaped" object in MatLab please? (preferably a parametric equation)
Isn't this a duplicate of your question that I answered here: https://www.mathworks.com/matlabcentral/answers/2032129-how-to-cre...

4 days ago | 0

Answered
User input to repeat a script
Try questdlg while (1) % Put script code here. % Now ask use if they want to do it again. promptMessage = ...

4 days ago | 0

Answered
How to create this "bean shape" in MatLab please?
Try this: t = linspace(0, 2*pi, 1000); x = 3 + 2 * sin(t) + cos(2 * t); y = 4 * cos(t) - sin(2*t); plot(x, y, 'b-', 'LineWid...

4 days ago | 1

Answered
How can I identity clusters on my scatterplot?
It looks like you don't have clusters. And I doubt you used scatter() to plot those. It looks like you used plot() to plot 10 ...

4 days ago | 0

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Answered
How can I transfer matlab to another user
We've done this several times. Contact your sales rep at the Mathworks. If you don't know who it is, just call the general num...

5 days ago | 0

Answered
Why is the line of y2 always a flat line at x-axis instead of a straight line with negative gradient?
It's flat because of hte scale of your y axis. Look -- it goes from -1 to 50 million, while y2 goes from 3 to -17. How do you ...

5 days ago | 1

Answered
How to convert a grayscale indexed image into a RGB indexed image ?
There is no such thing as an RGB indexed image. You can convert your indexed image into an RGB image with rgbImage = ind2rgb(i...

6 days ago | 1

Answered
how to extract missclassified pictures out of a file with a mixed dataset?
If, for your test set, you don't know the correct classification, and all you know is that the images you extracted into a diffe...

7 days ago | 0

Answered
Could a Phd uses a license Trial in a commercial company?
As I understand it, anyone can use MATLAB during their 30 day license trial. If they gave you a license, they want you to use i...

7 days ago | 0

Answered
Why do I keep getting an fopen error in my code? [absolute beginner]
This works fine: output_dir = pwd removed_ch = 9999; filename = 'test02.txt'; outputtextfile = fullfile(output_dir, filena...

7 days ago | 0

Answered
I am trying to run my code but it isn´t work. I don´t know what is wrong whit
It probably gets stuck in an infinite loop. Don't you understand that when you do this: n = 0; while n <=15 end n is less ...

7 days ago | 0

Answered
Why I do I get different results when I used jaccard Index with png format than with jpg format?
Both sets of code use the PNG versions. In general you should not use JPG files for image analysis, unless you're specifically ...

7 days ago | 1

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Answered
Need Help Understanding the 'function_oceanwave()' function
Yes, that's the problem when people write code and don't put in good comments. You don't understand it and now you want us to p...

7 days ago | 1

Answered
What does the >> n = 1:100; >> x = ( (-1).^(n+1) ) ./ (2*n - 1); >> y = sum(x) >>plot(x(1,1:4)) mean?
x is a row vector so it doesn't need two indexes. y is assigned but not used. The plot() plots the first 4 values from the x a...

7 days ago | 0

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Answered
How to Create a Equidistant histogram
Instead of using histogram which will plot the edges like you have, if you want equal spacing upon display, regardless of what t...

7 days ago | 0

Answered
How can I apply different colors to specific areas of a surface plot?
You can make an image of the colors that you want to have at each location. Then see my attached demo.

9 days ago | 0

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