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Image Analyst


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31,042 2010 年以降の合計貢献数

Senior Scientist 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. 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

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Just want to learn how to better
Here's your answer : Mathworks blog on covid-19 xrays

約5時間 前 | 0

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how to input to "imread" using uint8 vector that is equivalent to binary data of image file from fread
Of course imread() will "recognize" the image file on disk as a uint8 jpg image if you got it written out properly. I don't kno...

約6時間 前 | 0

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growing bubbles with a predetermined radius in a given volume?
Try the tag link on the right for "circle packing".

約17時間 前 | 0

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Divided interest of space (ROI) into continuous cubes
Description example labels = segmentLidarData(ptCloud,distThreshold) segments organized 3-D range data ptCloud into clusters. ...

2日 前 | 0

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How can one extract this vector from a matrix?
Try splitapply(): % Get sample data: M = rand(60, 3); M(:, 1) = repmat([1:12]', 5, 1) % Make months repeating in the first co...

2日 前 | 1

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How to save a figure through each run of a for loop?
Try export_fig: http://blogs.mathworks.com/pick/2010/05/28/creating-and-exporting-publication-quality-graphics/

2日 前 | 0

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How to save a figure through each run of a for loop?
If you have r2020a or later, try exportgraphics().

2日 前 | 0

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Creating one histogram for a multiple DICOM images
See the FAQ: https://matlab.fandom.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F In the loop, simply add the counts fro...

2日 前 | 0

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How can i save the scatter in GUI?
If you have r2020a, use exportgraphics().

2日 前 | 0

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How to define 1000*1000 matrix in matlab? Whenever I want to define a matrix 1000*1000, out of memory message was shown. Can anyone please help me?
Try this to get a 1000-by-1000 matrix rows = 1000; columns = 1000; A = zeros(rows, columns);

2日 前 | 0

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dE values in an image search
Code for that is in the demo in my File Exchange: https://www.mathworks.com/matlabcentral/fileexchange/31118-color-segmentation-...

2日 前 | 0

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Make a standalone app
Yes, you need the compiler toolbox. See the FAQ: https://matlab.fandom.com/wiki/FAQ#How_can_I_make_a_standalone_executable_from...

2日 前 | 2

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Separating and extracting data using edge detection
Attach your image in a .mat file. Do the nans run in between the pixels you want in a cluster? If not, simply do this mask = ...

2日 前 | 0

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Convert the intensity of image into a specific intensity range
You can use mat2gray: Img2 = uint8(255 * mat2gray(Img)); or you can use rescale Img2 = rescale(Img, 0, 255); rescale gives a...

2日 前 | 1

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How do I get every combination of 3 vectors?
Here's a for loop way to do it: % Create 3 sample vectors, one is a 35x1, one is a 31x1 and the last one is a 13x1. v1 = (1:35...

3日 前 | 1

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How do I flip an axis using imagesc?
Do you mean like with axis xy? [x, y] = meshgrid(1:16, 1:7) eta = uint8(rescale(sqrt(x.^2 + y.^2), 0, 255)); T=[360, 660]; p...

3日 前 | 1

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I want to add some of requiring to my codes ? How can I ?
Here's a start: customerName = 'Customer' again = true; numberOfItems = 0; maxItems = 30; % Failsafe. while again && number...

3日 前 | 0

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Finding column number of maximum of an array:
It could appear in more than one location. So do it this way: maxValue = max(yourArray(:)) [rows, columns] = find(yourArray =...

3日 前 | 0

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Matlab R2020A - App Designer Lamp Behaving Opposite to code
Is app.Switch2.Value a string, like 'on' or 'off'? If so, try strcmpi() instead of strcmp(). Or is it a logical or number like...

3日 前 | 0

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sharpening or cleaning this binary mask
You could blur the image and threshold it. windowWidth = 7; % Whatever - bigger gives more smoothing, experiment with differe...

3日 前 | 0

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How to compare test images using BPNN for age estimation?
The Mathworks has a demo. Ask them for it. Here's a snippet: % Copyright 2018 The MathWorks, Inc. function faceGenderAgeDete...

3日 前 | 0

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calculate mean in a for loop
You need to specify the kth row of data Mean_answer(k, h)= mean(data(k, 1:h))

3日 前 | 0

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How to calculate surface area of a selected region from a 3d plot
regionprops3() can give you the surface area of a 3-D volumetric image.

3日 前 | 0

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Problem in opening and Reading a Binarydata file ??
The file does not exist or exists in an area that you're not allowed to see. Try this % Here is the code for opening the and r...

3日 前 | 0

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i dont know whats the problem with this fails with variable test
When you do m(ii)=sum(x); x is a 2-D array. So sum(x) is a 1-D array, because it's summing each column, and you're trying to...

3日 前 | 0

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Can I delete temp folder after installation?
Yes. I delete mine with no bad side effects. I don't know why they don't clean up after themselves after they extract the self...

4日 前 | 0

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Imshow and Imshowpair differences?
You can tell imshow() what values to map to zero and what to map to 255 via the input arguments. imshow(grayImage, [40, 200])...

4日 前 | 0

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Changing pixel figure coordinates when using imshow
After you call it, try this: axis xy xy — Default direction. For axes in a 2-D view, the y-axis is vertical with values increa...

4日 前 | 0

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Undefined function or variable
Evidently that's not a function that's built-in to any of your toolboxes. Why do you think it should be? You need to ask the a...

4日 前 | 0

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wrote the code but the error says Unrecognized function or variable 'a'. Error in firle (line 13) Z = A(a)*B(b);
Perhaps you wanted this: x = 0 : 0.1 : 5; y = 0 : 0.1 : 5; [X, Y] = meshgrid(x, y); a = X(:); b = Y(:); numElements = nume...

4日 前 | 0

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