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:
Image Data Workflows, Industrial Statistics, Image Processing and Computer Vision

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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...

12 hours 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....

3 days 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...

3 days 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...

8 days 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. ...

8 days 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.

9 days 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...

9 days ago | 0

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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...

9 days 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

9 days 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...

12 days 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_...

12 days 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...

15 days 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. ...

15 days 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...

15 days 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....

16 days 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...

16 days 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.

18 days 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...

21 days 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.

22 days 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...

24 days 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 ...

24 days ago | 0

Answered
Can Matlab automatically detect a new value in Excel?
If you're using Windows and ActiveX, you can check out the properties and methods here: https://learn.microsoft.com/en-us/dotne...

25 days ago | 0

Answered
10x10 Matrix
Alternatively (since you already have a solution to your homework problem from the other Answer) you can do m = 10 * rand(10); ...

25 days ago | 0

Answered
How to eliminate this white haze when taking a photo?
@DGM makes some good suggestions. Glare and haze are caused by excess bright light scattering around your camera's optical syst...

26 days ago | 1

Answered
How would I use a 2D array based on a topographical map to determine the steepest direction at each point?
Try imgradient or imgradientxy Since this is a homework problem, if you have any questions ask your instructor or read the link...

27 days ago | 1

Answered
failing to normalize columns of matrix from 0 to 1
Try rescale for ii = 2 : 2 : size(A, 2) A(:,ii) = rescale(A(:,ii), 0, 1); end

27 days ago | 0

Answered
yticks function gives error with subplot function
Like I and everyone else says, your code runs for us and the error message indicates you have a variable called yticks. Set a b...

29 days ago | 0

Answered
How to create animation smiling face?
See attached demos and adapt as needed. Also see this tutorial on how to make animated GIFs. https://www.mathworks.com/matlabc...

29 days ago | 0

Answered
Adding White Gaussian Noise to an Image.
Try imnoise

30 days ago | 0

Answered
how to load from text file to listbox
You can use readlines to read the lines of the text file and then put them into the listbox. For App Designer, it would be some...

1 month ago | 0