DWT

2012 3 23
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i am working on dwt2 with mode as 'db2' problem i am facing is that size of cA is not exactly half of image used,which create problem in further part if anyone knows plz help

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Wayne King
Wayne King 2012-3-23

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Hi Kush, that is because the default extension mode for the DWT is not periodic. First, set the extension mode to 'per'
dwtmode('per');
Then use dwt2()
load woman;
dwtmode('per');
[A,H,V,D] = dwt2(X,'db2');

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