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# Frederik Kratzert

### University of Natural Resources and Life Sciences, Vienna

24 total contributions since 2014

Professional Interests: Video/Image Processing

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Submitted

FD = gfd(bw,m,n) - Implementation of the Generic Fourier Descriptors
Calculates the Generic Fourier Descriptors following the Publication of D. Zhang & G. Lu (2002)

Submitted

centerobject(bw)
a small function that centers an object with its centroid to the center of the image

Question

Why does translation with imwarp + affine2d-object enlarges the object?
Hey everybody, i searched the forum for an answer but couldnt find one, so i hope oyu can help me here. I have some troub...

circa 5 anni ago | 2 answers | 0

### 2

Solved

Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

oltre 5 anni ago

Submitted

multihistfit(data,nbins,varargin)
Fit multiple distributions in one figure to a dataset

Solved

Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

circa 6 anni ago

Solved

Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

circa 6 anni ago

Solved

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

circa 6 anni ago

Solved

Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

circa 6 anni ago

Solved

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

circa 6 anni ago

Solved

Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

circa 6 anni ago

Solved

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

circa 6 anni 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 ...

circa 6 anni ago

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...

circa 6 anni ago

Solved

Is my wife right?
Regardless of input, output the string 'yes'.

circa 6 anni 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 ...

circa 6 anni 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...

circa 6 anni ago

Solved

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

circa 6 anni ago

Solved

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

circa 6 anni 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 ...

circa 6 anni 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...

circa 6 anni 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:...

circa 6 anni ago

Me again, so i noticed, that i forgot to look on the 116 frames obtained by VideoReader() if there are also copies inside, and ...

circa 6 anni ago | 2

Question