Scilab Wavelet Toolbox Function
Last update : June 2007

dwt2 - Two Dimensional Discrete Fast Wavelet Transform

Calling Sequence

[CA,CH,CV,CD]=dwt2(x,wname,['mode',extMethod])
[CA,CH,CV,CD]=dwt2(x,Lo_D,Hi_D,['mode',extMethod])

Parameters

Description

dwt2 is for two dimension discrete fast wavelet transform with the signal extension method optional argument.

Examples

  x=rand(100,100);
  [CA,CH,CV,CD]=dwt2(x,'db2','mode','asymh');
 

Author

Roger Liu and Isaac Zhi

See Also

idwt2 ,