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Image Analyst


Last seen: Today Aktiv seit 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:
Deep Learning with Images, Industrial Statistics, Image Processing and Computer Vision

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  • MATLAB Central Treasure Hunt Finisher
  • Most Accepted 2021
  • 36 Month Streak
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  • Personal Best Downloads Level 5
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  • Most Accepted 2014
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Beantwortet
How to standardize an array so that the maximum value is 1 and minimum is -1 keeping the zero value as zero?
Try this: A = randi(10, 1, 18) - 5 A(A<0) = -A(A<0) / min(A(A<0)) % FIrst rescale negative numbers to -1 to 0 A(A>0) = A(A>0)...

etwa 4 Stunden vor | 1

Beantwortet
Is MinorAxisLength always perpendicular to the MajorAxisLength
You might also be interested in bwferet

etwa 11 Stunden vor | 0

Beantwortet
Finding the width of a blob perpendicular to the major axis
Use bwferet

etwa 11 Stunden vor | 0

Beantwortet
How to detect cluster of radial lines which are generated from same point ?
Attached code is a start.

etwa 12 Stunden vor | 0

Beantwortet
Matrix is singular to working precision.
FAQ: https://matlab.fandom.com/wiki/FAQ#Does_MATLAB_only_calculate_to_4_significant_digits?

etwa 18 Stunden vor | 0

Beantwortet
Finding a value of one vector based on the nonzero values of another vector
If B is always guaranteed to be 0 or 1, you can do this A = [2 5 1 4]; B = [0 1 0 1]; % B is a double here. A = A(logical(B))...

ein Tag vor | 0

Beantwortet
how can I make this vode work?
In this line T_new(i)=T(i,t)+a*((dt/(dr*dr))+(1/r(i))*dt/(dr))*T(i+1,t)-a*(2*(dt/(dr*dr))+(1/r(i))*dt/(dr))*T(i,t)+a*(dt/(dr*dr...

ein Tag vor | 0

Beantwortet
how to access rgb spectrum through array
You should really use the Color Thresholder app on the Apps tab of the tool ribbon. Set your thresholds there and then use the ...

ein Tag vor | 0

Beantwortet
Why does the software fail to respond when clicking the software icon?
I don't know but doing what it says in the FAQ will probably solve it: https://matlab.fandom.com/wiki/FAQ#After_installation,_M...

ein Tag vor | 0

| akzeptiert

Beantwortet
Replace the image background
This looks like a homework problem. If you have any questions ask your instructor or read the link below to get started: How d...

ein Tag vor | 0

Beantwortet
use xlswrite to paste the content on a specific cell name
No, you can just use "A2" as the range when you use xlswrite or writematrix or writetable. It will write the value that you tel...

ein Tag vor | 0

Beantwortet
How to have different threshold for different images?
You can use the interactive thresholding utility in my File Exchange: https://www.mathworks.com/matlabcentral/fileexchange/2937...

ein Tag vor | 0

Beantwortet
Selecting multiple ROI in images for processing
To analyze an optical mark test sheet, see attached demo.

2 Tage vor | 0

Beantwortet
Unable to perform assignment because the left and right sides have a different number of elements.
Check out the FAQ for a list of common error messages and their resolution: https://matlab.fandom.com/wiki/FAQ#Error_Messages ...

3 Tage vor | 0

Beantwortet
Image quality loss when importing?
Good question. The image is an indexed image, not a regular gray scale image. I did this in MATLAB: fileName = 'MRI-brain-tum...

3 Tage vor | 1

Beantwortet
divide row and plot it
Try this: data=[1 2 3 1 2 3; 7 8 9 10 11 12] [rows, columns] = size(data); for col = 1 : 3 data1(col, 1) = data(1, col);...

3 Tage vor | 0

Beantwortet
How to remove the grey margin from the imshow image
You're probably saving it with exportgraphics or saveas instead of imwrite. Use imwrite instead when you save your image.

3 Tage vor | 0

Beantwortet
How to use OCR for charater regocnition on picture of keyboard
ocr does not work well unless the letters are more than 20 pixels high. How high are your pixels? help ocr

4 Tage vor | 0

Beantwortet
Error saying ''Dot Indexing is not supported for variables of this type".
@Sowparnika and @Sowparnika R S It doesn't make any sense to have a function to extract contents/variables out of a cell array, ...

4 Tage vor | 0

Beantwortet
not sure what this code mean.
Take m and multiply it element-by-element times c. Then multiply by 0.5 and add it in to the original c to get a new c. Now yo...

4 Tage vor | 2

| akzeptiert

Beantwortet
How can I extract capital words from a string
Try this: s = "a_PSTC_SSSA_MNG_epwcrrauut_A_Extrastuff" words = strsplit(s, '_') for k = 1 : numel(words) thisWord = wor...

4 Tage vor | 0

Beantwortet
How to graph ln(x^2)=0.7?
Try this: x = linspace(1, 2, 10000); y = log(x.^2); plot(x, y, 'b-', 'LineWidth', 2) hold on; yline(0.7, 'Color', 'r', 'Lin...

4 Tage vor | 0

Beantwortet
whats the error in this code
See fix in your duplicate question: https://www.mathworks.com/matlabcentral/answers/1870837-how-to-fix-these-code-lines-for-app...

4 Tage vor | 0

Beantwortet
Issue with importing coloured image into MATLAB
Is your colored image floating point with values outside the range of 0 to 1? If so everything 1 or larger will show up as whit...

4 Tage vor | 0

Beantwortet
how to count the number of scatter points in a each sector region of the 6 concentric circles ?
If you have the x and y points then you can get the angle of each point using atand angles = atand(y ./ x) Then you can take t...

4 Tage vor | 0

Beantwortet
Identifying piano frequencies via color coding in the frequency domain
Have you tried spectrogram? Have you looked into Blind Source Separation or INdependent Components Analysis? This is...

4 Tage vor | 0

Beantwortet
How to detect cluster of radial lines which are generated from same point ?
Not sure what you want to find out since "detect" is so vague and unspecific. Please be specific. Like do you want a length di...

4 Tage vor | 0

Beantwortet
How can I calculate vector relative errors in percent?
You need to have a reference signal. Note: variance of a signal is not the error of a signal unless the true signal is a consta...

5 Tage vor | 0

Beantwortet
how to fix these code lines for app designer
Instead of f1=fspecial('average',[5,5]); I=imshow(f1,'parent',app.UIAxes2,... 'XData',[1 app.UIAxes2.Position(3)],... ...

5 Tage vor | 1

| akzeptiert

Beantwortet
How i can convert any type of image to ASCII values and store these values into one-dimensional array?
I don't understand why you want to do that. If you want the original image later, just make a copy of A before you alter it. Y...

5 Tage vor | 0

| akzeptiert

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