Image Analyst

Last seen: Today | Actif depuis 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:
Image Data Workflows, Industrial Statistics, Image Processing and Computer Vision

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Error: Function definition are not supported in this context. Functions can only be created as local or nested functions in code files.
You have your m-file something like this function [mvnx] = load_mvnx('New-Session-002'); % code end % of load_mvnx % Now scr...

environ 7 heures il y a | 0

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Subscript indices must either be real positive integers or logicals.
See the FAQ: https://matlab.fandom.com/wiki/FAQ#%22Subscript_indices_must_either_be_real_positive_integers_or_logicals.%22

environ 7 heures il y a | 0

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how to get RGB data from image object generated by imagesc()?
rgbImage = ind2rgb(X, colorMap);

environ 7 heures il y a | 0

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The training images are of size 224×224×3 but the input layer expects images of size 224×224×1.
You should write a little script to convert all of your images to gray scale and save them in a different folder so you don't ov...

environ 7 heures il y a | 0

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Non-pixelized image using imagesc (or alternatives)
However you created that image, you simply need to create it with more pixels. You can use imresize and then blur it, but it wo...

environ 7 heures il y a | 0

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How to use 1D projections to reconstruct an image?
This is essentially what CT does. You need to do filtered back projection. Study up on CT and find out how to use the inverse ...

environ 19 heures il y a | 1

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add error for when input is not integer
uiwait(errordlg('Error! You must enter an integer (a numerical digit)'));

environ 19 heures il y a | 0

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Graphing a Histogram for Simulation
How is it a distribution? You're not doing a Monte Carlo - you're not getting random numbers. Not sure what that function is. ...

1 jour il y a | 0

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MATLAB help 2D convolution
Try this: function output_image = my_convolution(image1, filter) [Gmag,Gdir] = imgradient(image1, 'sobel') output_image = GMa...

1 jour il y a | 0

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How to count number of blobs
I don't know why all novices think that just because you can see edges in the image, that edge detection is automatically the fi...

1 jour il y a | 0

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How can I color an image?
I don't think kmeans is a good way to segment a color image. I attach a demo as proof. You'd be better off using discriminant ...

1 jour il y a | 1

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classifying images based on their object measurement properties and labeling them as such, how can I do this?
As an example, see my Image Segmentation Tutorial in my File Exchange: Image Analyst's File Exchange It's a generic, general p...

1 jour il y a | 0

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Finding a double in the workspace by name and assigning it to a new variable
"They are named: "p100", "p101", "p102", "p103", etc. " Well that's your biggest mistake. Don't do that. Use an array. Why n...

1 jour il y a | 0

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The graph basic fitting tool accepts a matrice but not the polyfit function... How to do the same thing in a script ?
Try this: % Optional initialization steps clc; % Clear the command window. close all; % Close all figures (except those o...

1 jour il y a | 0

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I have used following code to segment a fundus image but the results are not very clear. The test4.jpeg fill is the original fundus images that I have used .please help
Try https://www.mathworks.com/matlabcentral/fileexchange/49172-trainable-cosfire-filters-for-curvilinear-structure-delineation-...

1 jour il y a | 0

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Why is ocr not working in this case
ocr() has lots of options. Try experimenting wtih them.

1 jour il y a | 0

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extend prediction bounds curves
I'd just use polyfit() to get the equations that fit your data. Once you have that equation, you can get values anywhere you wa...

1 jour il y a | 0

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finding edge/ plot from image/ maze
I'd try using indexedImage = rgb2ind(rgbImage, 8); to get an indexed image. Then find out the index for each color and ignor...

1 jour il y a | 0

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Error when using the placelabels function - Unrecognized function or variable
Ask the person you inherited it from. He or she probably wrote a custom function that they forgot to give you. If you can't co...

1 jour il y a | 0

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How can I carry out Image Transformation for the following image?
You can't. Sure, you can warp the image like with these Spatial transformations Defining and applying custom transforms Steve...

2 jours il y a | 0

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I requested access for Matlab coder.
Call them today. Talk to a real live person.

2 jours il y a | 0

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What does sc in imagesc stand for?
Well I always thought it meant scaled since it works for gray scale and I don't use the word "color" for gray levels. And it is...

3 jours il y a | 0

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Show the value of footprint based gait pattern .
Get a mask of the blue feet. Use the Color Thresholder app on the Apps tab of the tool ribbon. Then call imerode with a struct...

3 jours il y a | 0

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How to select triangle shapes of specific height from SEM image ?
You could probably use Image Analysis. See my Image Segmentation Tutorial in my File Exchange: Image Analyst's File Exchange ...

3 jours il y a | 0

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how to transform a table with column names into an double array without column names
Simply use table2array A = table2array(X) Note the column headers are not actually part of the data so that's why doing X(2:en...

3 jours il y a | 0

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install of MATLAB2023A
If you're sure you downloaded the installer from the genuine mathworks.com site, then turn off Defender, if you can. Otherwise ...

3 jours il y a | 0

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how to detect spots in this image and store it and also reduce SNR threshold?
I don't see the line. It must be extremely faint or so narrow it got subsampled away when it went to display it. Looks like yo...

3 jours il y a | 0

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measure the distance between two object
I have no idea why you decided to use YOLO for this task: Maybe some data scientist told you to do that. They seem to think ...

3 jours il y a | 0

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Why is the unit of focal length in pixel when you multiply mm and pixel?
Where is that documentation you're referring to? I don't know why you'd multiply those two things. What do they represent? Bu...

3 jours il y a | 0