Image Analyst

Last seen: Today | Aktiv seit 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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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...

3 Tage vor | 0

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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...

5 Tage vor | 0

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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 ...

5 Tage vor | 0

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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 ...

5 Tage vor | 0

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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...

9 Tage vor | 0

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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-...

12 Tage vor | 0

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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.

12 Tage vor | 0

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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

12 Tage vor | 0

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potential issue with fscanf new line character, the newline character is /n coming from a c background i was trying \n.
Maybe you might want to try readlines instead.

13 Tage vor | 0

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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...

14 Tage vor | 0

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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...

14 Tage vor | 0

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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...

14 Tage vor | 0

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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...

14 Tage vor | 0

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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...

14 Tage vor | 0

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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...

14 Tage vor | 1

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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....

16 Tage vor | 0

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

16 Tage vor | 0

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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....

16 Tage vor | 0

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how can i change image brightness ?
Try imadjust or adapthisteq

16 Tage vor | 0

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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...

18 Tage vor | 1

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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...

19 Tage vor | 1

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

20 Tage vor | 0

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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...

21 Tage vor | 0

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How to make a logical mask using a shape file?
You have to define lat and lon as vectors before you use them in meshgrid to get the full matrices Lat and Lon as outputs.

21 Tage vor | 0

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Is there a way to calculate differnce between two pictures and show it as %?
See https://en.wikipedia.org/wiki/Image_quality In MATLAB try brisque, niqe, and piqe

21 Tage vor | 0

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Finding multiple flat sections
Try movstd

21 Tage vor | 2

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Boundary Extraction Algorithm for Low-Resolution Ultrasound Images
I see no justification from the image alone that the bright region(s) would form a donut shape. You must be indicating those us...

22 Tage vor | 0

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Matlab asks me to sign in when I'm offline
Are you using a shared license -- part of a license pool? Like where your organization has a group of licenses (less than the n...

24 Tage vor | 0

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How to generate multiple tiff files into my file path?
You cannot use colons in the file name (for Windows) unless it's immediately after a drive letter. Try this: thresholdarray = ...

25 Tage vor | 0

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Is it possible to use format long in one line of code and then use format short in another line of code on the same script?
Just call format whenever you want to set the format and it will be that format for the rest of the script (or until you call fo...

25 Tage vor | 0

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