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...

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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. ...

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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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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...

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...

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...

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...

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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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...

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...

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...

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...

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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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]; ...

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...

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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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...

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...

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...

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...

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...

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...

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...

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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 ...

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...

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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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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...