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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. 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:
Industrial Statistics, Deep Learning with Images, Image Processing and Computer Vision

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  • MATLAB Central Treasure Hunt Finisher
  • Most Accepted 2021
  • 36 Month Streak
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  • Most Accepted 2014
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Content Feed

Answered
how to average a vector of arrays in Matlab
One simple intuitive way is to just add up all the arrays and divide by the number of the arrays numArrays = numel(indexes_ever...

5 hours ago | 0

Answered
Display header along with data in excel using GUI
Try to make a table and then write it out with writetable % Create sample data. A = [12.7 5.02 -98 63.9 0 -.2 56]; B = [2 3 4...

6 hours ago | 0

Answered
use findpeaks function for interpolation of signal peaks with damped sinusoidal oscillation
As the others have said, it's way undersampled so the peaks are not really where the peaks should be -- they're in between. If ...

6 hours ago | 0

Answered
using find-command to find max or min value
I prefer using the find function in combination to find max and min locations. The reason being if the max occurs at more than ...

7 hours ago | 0

Answered
creating a video - zoom in effect of still image
It's somewhat smoother if you use round instead of floor. But I think some of the jitter is due to using integer coordinates fo...

11 hours ago | 0

Answered
How can i view only a small section of my graph?
Why don't you try adjusting xlim?

13 hours ago | 0

Answered
how to set a range of data instead of percentile?
Explain what you mean by setting a range of data. The range of the data is what it is. If you want to scale the data to a diff...

15 hours ago | 0

Answered
How do I shift a chirp signal to the right?
I didn't delve into the code too much but it looks like you're changing frequency so that's why it's shifting on the vertical ax...

16 hours ago | 0

Answered
Morphological operation on 1-D signal (ECG)
What you were told is wrong. They do work for 1-D vectors. Look: vector1D = randi(9, 1, 31, 'uint8') v = imdilate(vector1D, ...

16 hours ago | 0

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Answered
count the # of rows of CSV files in a folder, part 2
Maybe, but that's unnecessarily complicated. Just use ** in dir to get only csv files in the top level folder and subfolders an...

1 day ago | 0

Answered
trainingOptions for a RCNN detector with AlexNet
Why are you retraining it when you said it has already been trained to recognize stop signs? If that's true, just delete the fi...

1 day ago | 0

Answered
How to extract a Roipoly area in an image with poly2mask function under my own defined coordinates
poly2mask expects x and y to be in pixels. drawpolygon will give you the coordinates in pixels and thus should be fine for use ...

1 day ago | 0

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Answered
How to save two variables and create a function to use it later
Try this to save your two vectors in a .mat file and then recall them later % Save time and y variable save('Time Data.mat', '...

1 day ago | 0

Answered
+60k Lines on one plot - Too slow
Plot just a subsample of the curves. You'll never be able to see all 60k lines anyway, so just pick, say 1000 of them at random...

1 day ago | 0

Answered
Why is imcolordiff not symmetric and what is output range?
I didn't even know about this fairly new function. Maybe I should read release notes. Or maybe I just forgot about it. No it'...

1 day ago | 0

Answered
generate a random number base on pdf function
You need to do "inverse transform sampling" so you need the CDF, as the esteemed @John D'Errico said. https://en.wikipedia.org/...

1 day ago | 0

Answered
Added a new Toolbox but Matlab says I don't have it
Try restoredefaultpath If that doesn't fix it, either reinstall, or call tech support on Monday for free installation suppo

1 day ago | 0

Answered
how to write codeing phylogenetic diversity index
I'm assuming you don't have the inputs needed to use that index. Maybe pick a different diversity index - one that is easier to...

1 day ago | 0

Answered
How can I make .mat file for SVM with 85 images?
What are the features that you measure for your SVM? You can collect them all in to a table for your training images, then use ...

1 day ago | 0

Answered
Do you know any histogram modification methods?
In the Image Processing Toolbox there are histeq, which gives lousy images, adapthisteq which gives good images. imadjust wh...

1 day ago | 0

Answered
I have problem to open Deep learning App
Try this. Tell us what you see in the command window: % Check that user has the specified Toolbox installed and licensed. % h...

1 day ago | 0

Answered
How do I store an input value to a variable each time?
See this snippet of code. Adapt as needed % Ask user for two floating point numbers. defaultValue = {'45.67', '78.91'}; titl...

2 days ago | 1

| accepted

Answered
can someone teach me how to find optic disc using three channels (RGB) ,shannon information content per channel in the ROI, OD centre using the circular Hough transform
Are you talking about color channel? The blue channel should have the greatest contrast between the retina and the optic disc. ...

2 days ago | 0

Answered
How to write MATLAB Scripts for FLIR's ResearchIR?
You should ask FLIR or check the FIle Exchange. All I have is the attached demo, and my Image Segmentation Tutorial: Image Ana...

2 days ago | 0

Answered
I want to find end to end distance of this skeleton image
What exactly is the end to end distance? Do you mean the Feret diameter bwferet? Do you mean the sum of all white pixels to ...

2 days ago | 0

Answered
How do I export a complete list of users at my institution?
Ask the license administrator at your institution. They may have that. Now whether they'll hand over the list to you is anothe...

2 days ago | 0

Answered
How can I create a curve that will fit my data?
fitnlm in the Statistics and Machine Learning Toolbox, since 2013b, though you should probably upgrade your antique 8 year old v...

2 days ago | 0

Answered
Help with the code for converting hyperspectral image to excel file
Try this: baseFileName = sprintf('%s%s%d.xlsx', dataname, datasetname, i); fullFileName = fullfile(dataSaveDir, baseFileName);...

2 days ago | 0

Answered
How to use the same directory for all functions in app designer?
This works on my computer: Folder = 'E:\Movies'; % FileList = dir(fullfile(Folder, '*.mkv')); FileList = dir(fullfile(Folde...

3 days ago | 0

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