Subband filters optimized for lost coefficient reconstruction
Sheila S. Hemami, Robert M. Gray · IEEE Transactions on Signal Processing · 1997
Transmission of digital subband coded images over lossy packet networks presents a reconstruction problem at the decoder. This correspondence addresses the design of a family of quadrature mirror filters (QMFs) that minimize the mean-squared error of mean-reconstructed low-frequency subband coefficients. The resulting filters perform well as QMFs as well as provide the desired reconstruction properties in the event of loss.