Lapped multiple bases algorithms for still image compression without blocking effect.
We describe a system for still image compression that uses several transform sets in a multiple bases realization algorithm. Our algorithms reduce the number of encoded transform coefficients 20% beyond DCT-only compression. We extend these algorithms to use several newly developed lapped orthogonal transform (LOT) bases, resulting in useful algorithms for low bit rate (high compression) operation without blocking effect.
Debrunner
V E
VE
Sch. of Electr. Eng., Oklahoma Univ., Norman, OK.
Chen
L
L
Li
H J
HJ