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Andrew Fowler


Inserm U1060

Actif depuis 2011

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Professional Interests: medical imaging, image processing, instrument control

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A résolu


Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

plus de 12 ans il y a

A résolu


Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

plus de 12 ans il y a

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

plus de 12 ans il y a

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

plus de 12 ans il y a

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Add two numbers
Given a and b, return the sum a+b in c.

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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

plus de 12 ans il y a

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Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

plus de 12 ans il y a

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

plus de 12 ans il y a

A résolu


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

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Réponse apportée
How can i get RGB value if i have position(x,y)
Since RGB images are really 3D matrices, you can use the squeeze command : pixelRGB = squeeze(yourImage(x,y,:));

plus de 12 ans il y a | 0

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Optimize vector position and values to form another vector.
You could set up your problem in a couple of ways. The easiest would be by brute force using nested loops, though it may not be...

environ 13 ans il y a | 0

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Relative entropy between 2 images.
The entropy is calculated from the histogram of the image, so if you have the same pixel values, it doesn't matter if you shuffl...

environ 13 ans il y a | 0

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saving figure at specefic resolution
Have you tried IMWRITE? Depending on the format you want to save as, you can specify the resolution in the command. You have t...

environ 13 ans il y a | 0

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Image Processing: DeInterleaving, is it possible?
This should be fairly straightforward if you are already working with a format that can be easily imported into matlab as an arr...

environ 13 ans il y a | 1

Réponse apportée
Fuzzy logic for image processing
I'm a little unclear about what exactly you're trying to do, but what I think you want is to select a region of interest, then c...

environ 13 ans il y a | 1

Question


Multiple colormaps within the same image
I'm working with intensity maps, so BW images. The values in one set of images are 8-bit integers in one, and double precision ...

environ 13 ans il y a | 1 réponse | 0

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