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Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.
You didn't attach any code so there is not much we can suggest. Here is how to resolve the problem: MATLAB Academy - Free 2 ho...

12 jours ago | 0

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how to manual crop an ultrasound image
See my demo. % Demo to show how drawrectangle can be used to draw a rectangular box on the image. clc; % Clear the command ...

12 jours ago | 1

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Answered
generating random particles effect to an image
Here's a start. I trust you can finish it. If so, see this: MATLAB Academy - Free 2 hour training % Demo by Image Analyst to...

12 jours ago | 1

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How can I calibrate to measure a distance from SEM image.
See my attached spatial calibration demo. You could adapt it to find the scale bar in the image automatically if you want.

13 jours ago | 0

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how do save them all up and make a table with the values from all of my images?
You need to get all your filenames in a cell array (see the FAQ) Then You'd need to do something like this inside your loop ov...

14 jours ago | 0

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fprintf use with error
The problem is you're using %s but not passing in any string after the format string. It needs to be of this form fprintf(fid,...

14 jours ago | 0

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How to change dimensions of output window
Did you try g = gcf; g.WindowState = 'maximized'

14 jours ago | 0

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How to resize an MRI image data keeping the original field of view?
First get one of the images then call imresize. [rows, columns, numberOfSlices] = size(raw_data) new_data = zeros(256, 256, nu...

14 jours ago | 0

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Intial guess for curve fitting.
Maybe try it in 2 or 3 passes. Just put in something reasonable and get the output. Then put in the output of your first fit a...

15 jours ago | 0

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How can I detect the dark black socket from the dark or very reflective bacground?
imadjust won't help. Increasing global brightness or contrast will not help with segmentation. Just think about it and you sho...

15 jours ago | 0

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I HAVE CONVERTED AN IMAGE FROM RGB TO LAB AND SELECTED B COMPONENT TO APPLY FAN BEAM TRANSFORM...BUT I AM GETTING 361*360 WHICH CAN NOT BE DIVIDED INTO SQUARE MATRIX
Either crop it, enlarge it, or resize it.

15 jours ago | 0

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Answered
How to determine outside perimeter of an array?
I'm not sure how you're getting a_perim = [6 9 2 8 7 8 3 4 10 6 8 5 8 2 4 6] ; from this: a = [... 3 2 6 6 ...

15 jours ago | 0

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How to compute the fourier transform of multiple images?
I'd not do the datastore approach and just use a regular traditional for loop like in the FAQ: https://matlab.fandom.com/wiki/F...

15 jours ago | 0

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How to convert binary segmentation back to RGB but keep circle!
You need to display the original image again. DON'T call it eye since that is a built in function. Call it rgbImage or somethi...

15 jours ago | 0

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Answered
How to fill a matrix from 11,000x43 to 32,000x43 with Nans in order to concatenate arrays?
Why do they have to be nan? Can they be zeros? If so the easy way is close all; clear all folder = 'D:\2021\datos_cozume...

15 jours ago | 1

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Any small program that is also really cool?
I may be biased but I think the coolest function is regionprops. It's really the heart of the Image Processing Toolbox. You ca...

16 jours ago | 0

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How to separate Object's merged Boundaries in Image?
Watershed transform question from tech support » Watershed transform question from tech support Marker-Controlled Watershed Seg...

16 jours ago | 0

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plot command not working
Try just uninstalling and reinstalling MATLAB. Then I wouldn't make my projects folder under the MATLAB 2020 folder like you ...

16 jours ago | 0

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how write a code to know the color of image using matlab?(how to identify a color from an image)
See my attached demo. You can train it with colors that you define by tracing outlines over those colors in the region. Then t...

17 jours ago | 0

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Any suggestions to calculate the threshold of pixel intensity (the dip represents low intensity)
Try this: [cx, xy, profile] = improfile(matrix(:,:,1), [x(1), x(2)] , [y(1), y(2)]); threshold = (max(profile) + min(profile))...

17 jours ago | 0

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How to perform image registration on non-rectangular image
Is it rotating and scaling while it translates? If not, you could use normalized cross correlation. See attached demo. Or try...

17 jours ago | 0

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how to calculate sum of pixels at differernt radius/scales of an image?
See attached demos and adapt as needed.

18 jours ago | 0

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Why am I not getting a colorcoded plot?
This will do it: osmotisk_data = readtable("tester_tabeller.xlsx") x = osmotisk_data{:,1}; y = osmotisk_data{:,2}; z = osmot...

18 jours ago | 0

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How to convert raw value shape into image
Resizing will either subsample the line away or else change the value and blur it. To get it sharp again, just threshold it im...

18 jours ago | 1

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2D sliding/moving/running average window
See my attached "manual" convolution demo.

18 jours ago | 0

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What is the best image format for the image process
Uncompressed images or lossless compression image formats are the best. PNG, which uses lossless compression, is pretty much th...

18 jours ago | 0

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How can i crop the image based on white pixel value
Not sure I see anything from that image. Anyway if you crop the image based on the image's min and max value, you will of cours...

18 jours ago | 0

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How do I compare a sample pocket image with test images to test for sizing errors?
Some things to try Turn it into gray scale or use the red image [r, g, b] = imsplit(rgbImage); whichever one has more contras...

19 jours ago | 0

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Is Pixel Interpolation possible in MATLAB? If so, how?
You might take a look at inpaintCoherent or inpaintExemplar.

19 jours ago | 1

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How can I stop printing both CR and LF when using 'help' function?
Maybe try format compact in the command window.

19 jours ago | 0