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Andrew Fowler
Inserm U1060
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Professional Interests: medical imaging, image processing, instrument control
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Solved
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...
12 years ago
Solved
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 ...
12 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 ...
12 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...
12 years ago
Solved
Determine if input is odd
Given the input n, return true if n is odd or false if n is even.
12 years ago
Solved
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 ...
12 years ago
Solved
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...
12 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:...
12 years ago
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,:));
12 years ago | 0
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
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
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
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
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