A fair warning to the challenger: the requested DCT-II is the orthogonal version, which means it needs to be multiplied by sqrt(2/N) where N is the size of the row, and the first element of the DCT x0 needs to be multiplied by 1/sqrt(2). It took me a while to understand. Wikipedia's formula is almost right, but it is missing those terms, which are mentioned only further below. Look at MATLAB's documentation (DCT-2), https://www.mathworks.com/help/signal/ref/dct.html, to find the proper formula.
who can read this?!!!
I could. A week ago, that is. :)
Convert a numerical matrix into a cell array of strings
Rosenbrock's Banana Function and its derivatives
Magic is simple (for beginners)
Rank of magic square (for beginners)
Rearrange coefficients after block based DCT transform.
Compute hamming distance between two binary vectors represented using lists of 1-byte numbers
Compute Hamming distances between each pair of rows from two input matrices
Create a "map" of 2D wavelet coefficients
Find the treasures in MATLAB Central and discover how the community can help you!
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office