Title :
Subband filters optimized for lost coefficient reconstruction
Author :
Hemami, Sheila S. ; Gray, Robert M.
Author_Institution :
Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA
fDate :
3/1/1997 12:00:00 AM
Abstract :
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
Keywords :
decoding; image coding; image reconstruction; least mean squares methods; optimisation; packet switching; quadrature mirror filters; visual communication; QMF; decoder; digital subband coded images; least mean-squared error; loss; lossy packet networks; mean-reconstructed low-frequency subband coefficients; quadrature mirror filters; reconstruction problem; reconstruction properties; Automatic control; Decoding; Filters; Forward error correction; Image coding; Image reconstruction; Mirrors; Network synthesis; Propagation losses; Protocols;
Journal_Title :
Signal Processing, IEEE Transactions on
