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Brian


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Question


Type problem with psnr
I'm using the command psnr on a reference image and a changed image, but I'm getting a class error. When I run the code, I get ...

nästan 10 år ago | 0 answers | 0

0

answers

Question


Image types and matrix multiplication
Lena= im2double(rgb2gray(imread('lena.bmp'))); energyLena= sum(sum(I.^2)) WaveletTransform= T1*I*inverse(T1); %%T1 is ...

nästan 10 år ago | 2 answers | 0

2

answers

Solved


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

nästan 10 år 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...

nästan 10 år 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 ...

nästan 10 år 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:...

nästan 10 år ago

Question


Substitute matrix values without mchange
I am using some code to substitute values without the symbolic toolbox. The code follows. # 1: B=A(A>2) # 2: T=zeros(size(A...

nästan 10 år ago | 1 answer | 0

1

answer

Question


Converting types without symbolic toolbox
I have a matrix which I want to convert to a list so that I can eliminate zeros. I have a code in Maple for this task, but can'...

nästan 10 år ago | 1 answer | 0

1

answer

Question


Making a list of a large matrix
The help page for making a list wasn't very informative for me. I have a list of ascending to descending values in a matrix, an...

ungefär 10 år ago | 0 answers | 0

0

answers

Question


Wavelet Transform energy preservation
Some brief understanding of this topic is required as I describe my problem. In Wavelet image compression, one has two main com...

ungefär 10 år ago | 0 answers | 0

0

answers

Question


Help understand the sumsqr algorithm
For a current project, I've begun switching between versions of matlab. For my trial of 2014, I guess I didn't download the neu...

ungefär 10 år ago | 2 answers | 0

2

answers

Question


Trouble with image importing
In my project, which focuses on image processing techniques, I have a significant fundamental problem. When I try to import a bl...

ungefär 10 år ago | 2 answers | 1

2

answers

Question


sum of squared elements in a matrix
I tried using the sumsqr to sum squares of each element in a matrix I don't think I understand the syntax. I tried putting the ...

ungefär 10 år ago | 1 answer | 0

1

answer

Answered
Multiplying matrices of different classes
I am encountering a new problem: When I input an image using imread, the resulting matrix is 3-Dimensional. That is, 256x256x3 ...

ungefär 10 år ago | 0

Answered
Multiplying matrices of different classes
In calculating threshold, one chooses a value close to .99 to signify how many low values in the matrix we can turn into zeros. ...

ungefär 10 år ago | 0

Question


Multiplying matrices of different classes
In my applied math course, we're learning wavelet compression techniques, and my partner and I have so far constructed two matri...

ungefär 10 år ago | 3 answers | 0

3

answers