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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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Feeds

Answered
Saving 3D image after segmentation
Did you try imwrite or save? help imwrite

3 days ago | 0

Answered
can image tiff convert to grayscale
image is a built-in function. Do not use it as the name of your variable. Zip up your image and attach the zip file with the p...

3 days ago | 0

Answered
How would I properly go about creating this function?
What is "width_values"? You never set it equal to anything so of course it complains.

3 days ago | 0

Answered
Set MarkerFaceColor to be filled by default
Try this: x = 1:5; y = rand(1,5); l = plot(x,y,'o', 'MarkerSize', 30); l.MarkerFaceColor = [.6, .2, .9]; % Change color from...

4 days ago | 0

Answered
How can I measure the (μm) length, diameter and radius of halloysite mineral?
Since most particles do not lie completely in the image or have one end obscured if they do, you can't get particle length. I s...

5 days ago | 0

Answered
rotating image using app designer
Assuming you have an image variable, not a widget on the UI, called app.img, it should work. But I don't know what app.img is. ...

6 days ago | 0

Answered
Why is my error not exactly 0
error is a built-in function. You must not use it as a name for your variable. Does the FAQ answer your question? https://mat...

9 days ago | 0

Answered
How can I identify the region where the ferret is through color in the image?
Use the Color Thresholder app on the Apps tab of the tool ribbon. Also see color segmentation apps in my Image Segmentation Tut...

11 days ago | 0

Answered
How can find connected region in RGB images?
See my Image Segmentation Tutorial in my File Exchange: Image Analyst's File Exchange It's a generic, general purpose demo of ...

11 days ago | 0

Answered
I want to change the backgroung color of image into transparent and then work with the pixels of it
Start here: Watershed transform question from tech support » Watershed transform question from tech support Marker-Controlled ...

11 days ago | 0

Answered
use rgb to caculate three brown ratio
You could try using kmeans with k=5 for the three browns, black, and white (for the letters). Or you could also use K nearest N...

15 days ago | 0

Answered
Image segmentation to segment the large blob into singular objects MATLAB
What about my answer in your duplicate question: https://www.mathworks.com/matlabcentral/answers/2100681-image-segmentation-of-...

18 days ago | 0

Answered
Why are all of my axes flipped in this figure?
Try axis xy or axis ij after you're all done plotting to see if one of those makes it the way you want it.

19 days ago | 0

Answered
showing error " Array indices must be positive or logical values"
See the FAQ for a thorough discussion of the error: Subscript indices must either be real positive integers or logicals

19 days ago | 0

Answered
Reconstruction of a blurred and noisy image
When I was in grad school, decades ago, my professor and I published a paper on "median window enhancement". The theory is that...

20 days ago | 0

| accepted

Answered
Finding both row and column indexes of nearest value
To find the nearest row and column, subtract the reference value from your matrix and then use find. To be super explicit, here...

20 days ago | 0

| accepted

Answered
Image segmentation of these pellets
It would be very very difficult to segment every single individual pellet, particulary since some are very small, some are "touc...

20 days ago | 0

Answered
Zoom in on a particular part of the plot with circular view
You can adjust the graph's x limits to zoom in on the section you want: xlim If you want to make a new plot with a small porti...

21 days ago | 0

Answered
Find similarities between two signals
The question is really what kind of metric(s) would be useful for you? How about RMS difference? rms How about mean absolut...

21 days ago | 0

Answered
how can I make the vascular structures in the retina image incisively and clearly in image processing?
See this File Exchange entry: Trainable COSFIRE filters for vessel delineation with application to retinal eye images, ophthalm...

21 days ago | 1

Answered
How Do I Implement Histogram Normalization for RGB Image?
Yes it will look weird. That's because you stretched each color channel independently and that destroys the color relationship....

22 days ago | 0

Answered
Is it possible to make a video play through of points showing yaw, pitch, and roll values?
See my attached movie making demos.

22 days ago | 0

| accepted

Answered
how can I make the dilation and erosion process on the image in the cleanest way?
I don't think you need to do any of that for deep learning. You don't need to get rid of the black background in the corners....

22 days ago | 0

Answered
how can i change image brightness ?
Try imadjust or adapthisteq

22 days ago | 0

Answered
When running an exe created from a matlab app, where are the variables stored?
Steve's answer is right. However if you have your program store variables to disk files in the "current" folder, you might face...

24 days ago | 1

Answered
Drawing on UI Axes in MATLAB app designer
There is a family of "draw" functions, like drawpolygon, drawfreehand, drawline, etc. Use one of them. See attached demos if y...

25 days ago | 1

Answered
duration of rain. help
You might look into splitapply, grpstats, groupsummary, and findgroups. They are very useful functions to know about! 🙂

27 days ago | 0

Answered
Detect monotonic decrease and record the corresponding rate
Does this help? D1= {'3/25/2024 15:01:10' 15 '3/25/2024 15:01:26' 25 '3/25/2024 15:01:42' 25 '3/25/2024 15...

27 days ago | 0

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