Name
wavedec2 — Two Dimension Multiple Level Discrete Fast Wavelet Transform
Calling Sequence
[C,S]=wavedec(x,N,wname)
[C,S]=wavedec(x,N,Lo_D,Hi_D)
Parameters
- wname
-
: wavelet name
- x
-
: double matrix
- N
-
: decompostion level
- Lo_D
-
: lowpass analysis filter
- Hi_D
-
: highpass analysis filter
- C
-
: coefficent array
- S
-
: size array
Description
wavedec is for two dimension multiple-level discrete fast wavelet transform. Extension is stored as a global variable and could be changed by dwtmode;
Examples
x=rand(100,100);
[C,S]=wavedec2(x,3,'db2');
Authors
Roger Liu and Isaac Zhi