David Valencia (@David VP)
Following the previous blog entry: http://www.dsprelated.com/showarticle/115.phpDifference between DWT and DWPT
Before getting to the equivalent filter obtention, I first want to talk about the difference between DWT(Discrete Wavelet Transform) and DWPT (Discrete Wavelet Packet Transform). The latter is used mostly for image processing.
While DWT has a single "high-pass" branch that filters the signal with the h1 filter, the DWPT separates branches symmetricaly: this means that one...
UPDATE: Added graphs and code to explain the frequency division of the branches
The focus of this article is to briefly explain an implementation of this transform and several filter bank forms. Theoretical information about DWT can be found elsewhere.
First of all, a 'quick and dirty' simplified explanation of the differences between DFT and DWT:
The DWT (Discrete Wavelet Transform), simply put, is an operation that receives a signal as an input (a vector of data) and...
Hello fellow DSPrelated readers!
First of all, my name is David Valencia, I live in Mexico City and study in the Instituto Politécnico Nacional [IPN] (or National Polytechnic Institute) with a major in Telematic engineering. I'm 21 years old and have interest in telecommunications, signal transmission and networking.
I'm honored with the chance to cooperate with this great community, and I will work hard in order to lend a hand to all you people interested in DSP...
No Threads Found
Use this form to contact David VP
Before you can contact a member of the *Related Sites:
- You must be logged in (register here)
- You must confirm you email address