Answered
Divide an image vertically into two equally luminous parts, bisect these two parts, calculate the luminance of each part....
Something like this? A = imread('peppers.png'); A = rgb2gray(A); % BT601 luma A = im2double(A); % split the image into two...

5 månader ago | 0

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Repair damaged circles and create closed curves
I suppose my solution has a weakness that should've been obvious to me. It fails if it has to do extrapolation to bridge a gap. ...

5 månader ago | 0

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Can MATLAB do radial enlargements of plots?
You could do this by simply transforming the data itself scale = 2; center = [1 2]; % [x y] r = 1; th = 0:360; x = r*cosd...

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Answered
creating a video - zoom in effect of still image
You can get a bit better results by not rounding the rect parameter scaling prior to cropping It's not perfect, but it's a b...

5 månader ago | 1

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I have tried many different ways of plotting but it won't make a line graph can someone help me out?
You are creating a plot object that contains only one point, but have no specified marker style to indicate those points. There...

5 månader ago | 0

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how do i find a set using matrix
Like this? sza = 10; A = randi([1 10],sza) % output will be variable-length % preallocate to maximum length kmax = max(si...

5 månader ago | 0

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any ideas for making code faster?
Here. This is about 5x as fast, though it could be improved I'm sure. R = [0.004 0.0057 0.005 0.005 0.0045 0.0044 0.005]; X =...

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How to save Histogram of Multiple Images
This should be a start sourcefolder = 'E:\input'; filepattern = fullfile(sourcefolder, '*.png'); % this shouldn't be in the...

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Index exceeds the number of array elements in image processing.
Obviously, not all columns of the edgemap will contain nonzero elements, so r will often be zero-length. Also, Graycrop isn't u...

5 månader ago | 0

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thermal image processing to get the temprature on each pixel
Image Analyst has a number of examples https://www.mathworks.com/matlabcentral/answers/320467-i-need-to-convert-rgb-image-into...

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Answered
convert image in matlab
As IA notes, in order to find out how to do a Photoshop task in MATLAB, you figure out how to do it in Photoshop first. Transla...

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Place one image on a blank image but several times i.e (passport style)
If the FG images are simple, solid rectangular images, you can just write a loop and insert each image into the background by di...

5 månader ago | 0

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How to blur with a controlled area?
If the user has Image Processing Toolbox, using roifilt2() or even imfilter()/imgaussfilt() could simplify the task. For a smal...

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Fill contour color into the graph
I somehow doubt this is actually what you want, but I'll oblige. % given theta = [80.86 81.36 81.82 82.38 82.98 83.64 84.28 85...

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Save a grayscale image as an colored image
Depending on what you mean when you say you want it to be a colored image, this might have the answer: https://www.mathworks.co...

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Answered
How to generate a multi-dimensional array from a vector ?
I'm sure there are more elegant ways, but here's this. I'm pretty sure it works. % inputs m = 3; x = [1 2 3 4 5 6 7 8 9]; ...

5 månader ago | 0

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MATLAB output is a bunch of numbers with operators not the exact number
To be pedantic, those expressions are the exact result. The decimal values are an approximation. That said, you should be ab...

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this is a part of my code, I am getting this message. "Unable to perform assignment because the indices on the left side are not compatible with the size of the right side."
I'm going to go out on a limb and say that there's no reason to believe that the RHS of this assignment is a scalar. index(i)...

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Answered
How can i correct brightness of a monochrome image using arithmetic operations?
For basic brightness/contrast controls, see this demo. https://www.mathworks.com/matlabcentral/answers/496452-contrast-vs-brigh...

5 månader ago | 0

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How can I combine bit map images to get back the original grey scale image?
Using a bunch of numbered variables forces you into writing unnecessarily repetitive code. This can be simplified. One way wou...

5 månader ago | 0

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How to superimpose many images using loop?
Imfuse is a simple tool for visually comparing two images. It has no practical use for processing more than two images. It sho...

5 månader ago | 0

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How can I use sliceomatic for 3D plots without getting the below errors?
As far as I know, sliceomatic() has been broken for years. As the error says, 'new' is not a valid option for the 'nextplot' pr...

5 månader ago | 0

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Combining images to make a composite image
There are a number of ways to do this. As usual, I'm going to generalize a bit since I doubt OP is the one who will see this an...

5 månader ago | 0

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How to overlap more than two images into a one image with Matlab?
Imfuse() is a simple tool for visually comparing two images. It has no utility for similar tasks involving more than two images...

5 månader ago | 0

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if loop dosen't complete?
size() returns a variable-length vector. Don't compare against the size() of an array if you're trying to compare against a sca...

5 månader ago | 1

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how to create random value matrix with size 3X5?
If the numbers are supposed to be integers: A = randi([1 10],3,5) otherwise, if the numbers can be any value in the specified ...

5 månader ago | 0

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Running out of memory using imfuse repeatedly
The reason you're running out of memory is simple. Whenever imfuse() concatenates two images using the 'montage' option, the re...

5 månader ago | 1

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Answered
Surround color for display
When you mask off data using NaN, the plot is simply not drawn there, revealing whatever graphics objects might be beneath it. ...

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Answered
using nested for loop to print all of factorial
Something like this should be a start: for n = 1:100 % set a nested for loop factorials = 1; % this needs to be reset insi...

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Answered
How may one digitize a curve from an image
These two answers are relevant and contain links to other related answers. https://www.mathworks.com/matlabcentral/answers/16...

5 månader ago | 1

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