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Andrew Fowler


Inserm U1060

Active since 2011

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Professional Interests: medical imaging, image processing, instrument control

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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...

13 years ago

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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 ...

13 years ago

Solved


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 ...

13 years ago

Solved


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...

13 years ago

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

13 years ago

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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.

13 years ago

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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 ...

13 years ago

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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...

13 years ago

Solved


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:...

13 years ago

Answered
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,:));

13 years ago | 0

Answered
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...

13 years ago | 0

Answered
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...

13 years ago | 0

Answered
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...

13 years ago | 0

Answered
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...

13 years ago | 1

Answered
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...

13 years ago | 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 ...

13 years ago | 1 answer | 0

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