Answered
Randomly deforming my curve
Try this: % Initialization steps. clc; % Clear the command window. close all; % Close all figures (except those of imtool...

8 days ago | 1

Answered
How to Segment a image object based on edge points ?
You should be able to just threshold and call bwlabel. [labeledImage, numRegions] = bwlabel(grayImage > 0, 4); I'm not sure ...

8 days ago | 0

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Extracting external Boundary from Binary Image generated from noisy RGB
If you just want the top pixel of the quarter image, you can simply scan the image column by column looking for the first pixel ...

8 days ago | 1

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how to set x-axes in a histogram of gray scale image and how to see if the image is saturated (12 bit)
If the maxcount is 2123959, then that just means that the highest bin has a y value of 2123959. That bin could be anywhere alon...

8 days ago | 0

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How to Segment a object's based on color pixel value ? and how to labelling it ?
You can use the Color Thresholder on the Apps tab of the tool ribbon. Tell it to export the code. Then you can pass the mask i...

8 days ago | 0

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Animate a rectangle, for loop used
Use the rectangle() function. Get it's handle so you can delete the old one when you want to place a new one.

9 days ago | 0

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Answered
How to plot this graph on Matlab?
You can use rectangle() to plot the circle and oval. You can use text() to place text labels on the plot.

9 days ago | 2

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Answered
Nuclear norm coding issue
In plot([1 : 50:(m*n)], SuccessRate(2:9)) SuccessRate(2:9) has 8 elements. Does x have 8 elements? What does this show leng...

9 days ago | 0

Answered
optimization of scobel image processing - better approach needed
Here is what I have so far: % Demo by Image Analyst clc; % Clear the command window. close all; % Close all figures (exce...

9 days ago | 0

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Answered
optimization of scobel image processing - better approach needed
What happens if you try stdfilt(), or look at the vertical profile by summing the image horizontally?

10 days ago | 0

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Trying to get the angles at each time step. The angles should be in radians 0 to pi. From my loop, the angles are qs, qe, qw. Each time we get a new angle by adding the q_dot. I am getting angle 10^4 , which does not make sense.
If you want equal spaced angles, and a certain number of them, do this: allAngles = linspace(startingAngle, endingAngle, number...

10 days ago | 0

Answered
Find quasi-periodic peak locations from noisy photon count data
I'm attaching a demo where you can specify how many Gaussians are in your signal and it will find them. If you don't know how m...

10 days ago | 0

Answered
Image processing - calculate center mass and its initial moment
Call regionprops(binaryImage, 'Centroid') binaryImage = bwareafilt(binaryImage, 1); % Take largest only. props = regionprops(b...

10 days ago | 0

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Answered
how to repair the error of read multiple images in one folder and proceed directly to the background removal stage and generate fractal dimension values from those images
What are you trying to do with loading mri, and with montage? montage wants a variable full of images or image names. What are...

10 days ago | 0

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Answered
How to hide or delete the legend that is not needed
Try getting rid of the for loops, which essentially do nothing: plot(lv,reag(1,:),'color',[0 0.4470 0.7410],'LineWidth',LineWid...

10 days ago | 0

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How to calculate peak signal-to-noise ratio (PSNR) for RGB color image in Matlab?
The help does not specify that it must be a 2-D gray scale image so I assume it would work for an RGB image, which makes sense s...

10 days ago | 0

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Answered
Why do I get the error "Unrecognized function or variable" with this
What is time? Your function does not know because you did not pass it in. ALso, you did not pass in speed1 so it won't know th...

11 days ago | 0

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how matlab reads Column vectors
Let's assume your 3 column vector is something like this: vector = [1, 2, 3]; % A 3-column "row vector.". Though it is a 3 col...

11 days ago | 0

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Answered
Two colormaps for same worldmap axis
Try this demo and adapt as needed: % Make ramps so we have an image to work with. rows = 300; columns = 200; values = linspa...

11 days ago | 0

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average over a certain range of index ?
Megha, here is a non-for loop way of doing it using splitapply(): A = [1 7 12 20 23 31]; B = [6 11 19 22 30 35]; C = rand(1,3...

11 days ago | 0

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Thresholding based on smaller domains
imbinarize() has an 'adaptive' option try that. Otherwise try to use adapthisteq() to flatten the image so that you can use a g...

11 days ago | 0

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How to quantify all the colored blobs in a video?
See my attached demo where I track a colored Sharpie marker.

11 days ago | 0

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Sampling 100 four-child families to estimate the probability that a four-child family has three girls
Scrap almost all that and do this: S = 1; % 0=boy 1=girl R = 1000000; % a million families with 4 children N = 4; % flip 4 ...

11 days ago | 0

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Answered
How MTF blurs an image?
Use fspecial() to create Gaussian PSF's, which is just the spatial domain representation of the MTF. Then pass the PSF into imf...

12 days ago | 0

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Answered
Replace Only Certain Values within a Matrix Based on Indices from Another
See if this gives you what you want: y = y .* ind; If not, then attach your x and y in a .mat file and tell us what you expect...

12 days ago | 1

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How to calculate the automatically some distance in the image based on the colour ?
Kristen, try this: % Demo by Image Analyst, February, 2021. clc; % Clear the command window. close all; % Close all figur...

12 days ago | 2

Answered
Using inbuilt RANSAC function for circle fit in 2D data
@Said, thanks. That's outstanding. I'm attaching a full demo (using noisy but "good" data that did not need RANSAC) in case an...

13 days ago | 1

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How to cut off part of the figure out after you filtered it
You could just display from 100 on: xlim([100, max(output1)]); or you could remove everything less than x=100 startingIndex =...

13 days ago | 0

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Indexing out of regionprops
What would you like? You could also ask regionprops to retrieve the blob shape for every index if you want. If you want you ca...

13 days ago | 0

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Answered
How to search functions for mat use
I'd type control-shift-F then tell it to search all m-files in some folder and subfolder for whatever you think it might look li...

13 days ago | 0

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