Problem 1010. Create a "map" of 2D wavelet coefficients
Generate a matrix that for an image of size r*2^S by c*2^S indicates index of the wavelet subbands after 2D Discrete Wavelet Transform. Subbands are indexed from the lowest to highest frequency clockwise.
As inputs number of scales S and size (r x c) of the lowest frequency subband are given.
For example (2 scales and r=1, c=1) :
w = createDWTBlockMap(2, 1, 1)
Should produce:
1 2 5 5 4 3 5 5 7 7 6 6 7 7 6 6
1 (or 1s) in the top-left corner indicating approximation band and then 2,3,4,..,3*S+1 the other bands.
Solution Stats
Solution Comments
Show commentsProblem Recent Solvers3
Suggested Problems
-
46456 Solvers
-
2267 Solvers
-
501 Solvers
-
Longest run of consecutive numbers
6432 Solvers
-
Implement simple rotation cypher
1095 Solvers
More from this Author4
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!