Title :
Lapped multiple bases algorithms for still image compression without blocking effect
Author :
DeBrunner, V.E. ; Chen, Lixiang ; Li, Hong-Jian
Author_Institution :
Sch. of Electr. Eng., Oklahoma Univ., Norman, OK, USA
fDate :
9/1/1997 12:00:00 AM
Abstract :
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
Keywords :
data compression; image coding; transform coding; transforms; block transform coding; lapped multiple bases algorithms; lapped orthogonal transform; low bit rate; still image compression; transform coefficients; Bit rate; Discrete cosine transforms; Discrete transforms; ISO standards; Image coding; Image reconstruction; Pixel; Signal representations; Standards development; Transform coding;
Journal_Title :
Image Processing, IEEE Transactions on
