1
$\begingroup$

The double-density DWT is an improvement upon the critically sampled DWT with important additional properties: It employs one scaling function and two distinct wavelets, which are designed to be offset from one another by one half, I wonder why double density DWT uses two HPF with offset 1/2 insteed of one HPF in DWT? what he mean with offset from one another by one half? how it impoved the lack of shift invariance?

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.