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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 ...
ungefär 10 år ago | 0 answers | 0
0
answersQuestion
Image types and matrix multiplication
Lena= im2double(rgb2gray(imread('lena.bmp'))); energyLena= sum(sum(I.^2)) WaveletTransform= T1*I*inverse(T1); %%T1 is ...
ungefär 10 år ago | 2 answers | 0
2
answersSolved
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...
ungefär 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 ...
ungefär 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:...
ungefär 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...
ungefär 10 år ago | 1 answer | 0
1
answerQuestion
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'...
mer än 10 år ago | 1 answer | 0
1
answerQuestion
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...
mer än 10 år ago | 0 answers | 0
0
answersQuestion
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...
mer än 10 år ago | 0 answers | 0
0
answersQuestion
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...
mer än 10 år ago | 2 answers | 0
2
answersQuestion
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...
mer än 10 år ago | 2 answers | 1
2
answersQuestion
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 ...
mer än 10 år ago | 1 answer | 0
1
answerMultiplying 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 ...
mer än 10 år ago | 0
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. ...
mer än 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...
mer än 10 år ago | 3 answers | 0
