Name
idwt2 — Two Dimension Inverse Discrete Fast Wavelet Transform
Calling Sequence
X=idwt2(CA,CH,CV,CD,wname,[S])
X=idwt2(CA,CH,CV,CD,Lo_R,Hi_R,[S])
Parameters
- wname
-
: wavelet name
- X
-
: reconstructed matrix
- Lo_R
-
: lowpass synthesis filter
- Hi_R
-
: highpass syntheis filter
- S
-
: restruction size of row and column
- CA
-
: approximation coefficent
- CH
-
: horizontal detail coefficent
- CV
-
: vertical detail coefficent
- CD
-
: diagnoal detail coefficent
Description
idwt2 is for two dimension inverse discrete fast wavelet transform. Coefficent could be void vector as '[]' for either of CA, CH, CV or CD.
Examples
x=rand(100,100);
[CA,CH,CV,CD]=dwt2(x,'db2','mode','asymh');
x0=idwt2(CA,CH,CV,CD,'db2',[100 100]);
Authors
Roger Liu and Isaac Zhi