Name

detcoef2 — Two Dimension Detail Coefficent Extraction

Calling Sequence

D=detcoef2(type,c,s,N)
[H,V,D]=detcoef2('all',c,s,N)

Parameters

H
: reconstructed horizontal detail coefficient
V
: reconstructed vertical detail coefficient
D
: reconstructed diagonal detail coefficient
c
: coefficent array
s
: size array
N
: restruction level
type
: 'h', 'v', 'd', 'c' or 'all'

Description

detcoef2 is for extraction of detail coeffient at different level after a multiple level decompostion. Extension mode is stored as a global variable and could be changed with dwtmode.

Examples

  x=rand(100,100);
  [C,S]=wavedec2(x,3,'db2');
  H2=detcoef2('h',C,S,2);
 

Authors

Roger Liu and Isaac Zhi

See Also

wavedec2 , waverec2 , appcoef2