Image Analyst

Last seen: Today | 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:
Industrial Statistics, Image Processing and Computer Vision

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Answered
Why does fft of non-integer number of cycles sin wave NOT have sidelobes?
As you know, the FT of an infinitely long pure sine wave is a delta function. However you don't have an infinitely long sine wa...

1 dag ago | 0

Answered
add a number of rows corresponding to the number in a numeric box
The code basically works. You just need to be sure that the edit field is a numerical edit field, not a character edit field, a...

4 dagen ago | 0

Answered
find sequence in a matrix
The first [1, 0] shows up at index 2, not 7. It also appears at index 6 and others. Probably the simplest way (a single line o...

5 dagen ago | 1

Answered
Quick Access bar capacity
It might not be what you want but the only way I can find is to do Home/Favorites/Quick Access (from the tool ribbon) and then w...

5 dagen ago | 0

Answered
Inserting additional data in an already created table
Try the function made for adding columns to tables: addvars

6 dagen ago | 1

Answered
Enhancing Graph Colorization for Visualizations in MATLAB
The jet and hsv give some pretty contrasty and colorful colormaps. Also try clim to adjust what values you want the rapidly cha...

6 dagen ago | 1

Answered
cannot load csv file
Instead try using the functions: readtable, readmatrix, readcell, or csvread If you have any more questions, then attach your d...

7 dagen ago | 0

Answered
How do I find the corner points of an mask
See my Answer in your duplicate question: https://www.mathworks.com/matlabcentral/answers/2177033-help-me-get-the-points-of-the-...

7 dagen ago | 0

Answered
help me get the points of the mask
You can find a wealth of information online just by Googling "Minimum perimeter polygon". Yes, it's a thing. And there is much...

7 dagen ago | 0

Answered
Obtain Pixel Shift from Registered Images
So I'm assuming you cannot get control over your plate and camera, like have the plate put into a jig to position it precisely e...

8 dagen ago | 0

Answered
How to make a segmentation in fibers?
I've spent the bulk of the last 35 years of my career doing color analysis of fabrics/textiles. I'm extremely familiar with it....

11 dagen ago | 0

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Answered
Intersection points of multiple straight line segments
How about just do a brute force loop numSegments = size(lineSegments, 1); % Num rows in the matrix. numIntersections = numSegm...

11 dagen ago | 0

Answered
How to expand a matrix and interpolate between values?
I believe you can simply use interp1 if you have a matrix. Otherwise if you have a table, you can make the syntax changes neces...

15 dagen ago | 1

Answered
closed countour around a given point
Just treat your image as an image and use image processing. So threshold it at whatever level you want to get a binary image. ...

16 dagen ago | 0

Answered
Why am I unable to execute my standalone application with an error referring to "mclmcrrt9_4.dll"
Look in the c:\Program Files\MATLAB folder. If the run time library installation worked, you should see it in there.

16 dagen ago | 0

Answered
Gradient based sharpness identifictaion in an image
Try using imgradient or stdfilt to find regions of high detail. These should be in focus. Of course low detail areas could als...

17 dagen ago | 0

| accepted

Answered
matlab window is moving towards left not able to visible full only x is dislay can any i suggest to solve this issue
If part(s) of your figure are off screen, try to get the screen size, then reposition and resize your figure window to be on the...

17 dagen ago | 0

Answered
Help me get this shape on the masks
Try bwboundaries and alphaShape https://www.mathworks.com/help/releases/R2024b/matlab/ref/alphashape.html

17 dagen ago | 0

Answered
Separate Callback Functions in AppDesigner
The callback for a button, and the CloseRequestFunction callback for the figure are two entirely separate functions. For the Qu...

20 dagen ago | 0

Answered
Problem extracting values from for loop
Index the RMSE variable: for loopIndex = 1 : whatever F = getdatasamples(y_out.clean, [1:567]); A = getdatasamples(y_...

20 dagen ago | 0

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Answered
Automatic Image Segmentation of three steel ropes using Image Processing Tools
@Darya Yakovleva, I'm really surprised I did not see your post when you posted it 4 years ago. But anyway, you've chosen wisely...

22 dagen ago | 0

Answered
How do I access an element in an answer array directly?
Evidently you need to do it in two steps. A bonus though is that the two step method is much more readable and understandable. ...

22 dagen ago | 0

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Answered
I am trying to remove a noise which was generated as a random noise added with multitone cosine signals so that this noise will contain white gaussian noise with multiple
It's not really white (flat spectrum), is it, if it occurs at specific and known frequencies? Why don't you just FFT the signal...

22 dagen ago | 0

Answered
Extract Text and Values from String
How much does the string vary? Are all the things at fixed, specific locations? If so just use indexing str = 'AB(16.7)CD[20....

24 dagen ago | 0

Answered
Problem with matlab support/sales team- NO RESPONSE
Go here: https://www.mathworks.com/support/contact_us.html?s_tid=hp_ff_s_support Change the country to the one you live in, an...

24 dagen ago | 0

Answered
How to make MATLAB read the environment variable JAVA_HOME
Maybe try using setenv to set it up in your startup.m file.

26 dagen ago | 0

Answered
Image analysis - Bounding Box converted to Circular Mask
To display circles rather than bounding boxes, you can just ask regionprops for the Centroid and EquivDiameter. Then use viscir...

29 dagen ago | 0

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Answered
How do I find the corner points of an mask
Depending on the shapes you're dealing with, convhull may work for you.

30 dagen ago | 1

Answered
How to skip missing time durations in a time-series heatmap (image based figure)
I don't think putting in nans where you don't want it to plot is "klunky" - we do it all the time. Go ahead and do it if that w...

ongeveer een maand ago | 0

Answered
Can Matlab automatically detect a new value in Excel?
How about if you use dir to get the file date/time stamp and then if it's later than the last time you processed it then Stella ...

ongeveer een maand ago | 0