Title :
SPIHT image compression with transmission of auxiliary information and selective modification of high frequency coefficients
Author :
Ang, Li-Minn ; Cheung, Hon Nin
Author_Institution :
Div. of Eng., Univ. of Nottingham, Kuala Lumpur, Malaysia
Abstract :
The SPIHT algorithm is a popular algorithm using wavelet techniques for image compression. In this paper, we present modifications to the algorithm by: 1) sending additional information to the decoder about the largest magnitudes in the frequency subbands; and 2) modifying selected coefficients in the high frequency subbands. The proposed modifications give an improvement to the algorithm performance without incurring much additional complexity.
Keywords :
discrete wavelet transforms; image coding; image reconstruction; trees (mathematics); visual communication; DWT; SPIHT image compression; additional decoder information; auxiliary information transmission; frequency subband magnitude information; high frequency coefficient selective modification; high frequency subbands; reconstructed image; set partitioning in hierarchical trees; subband decomposition; Compression algorithms; Decoding; Discrete wavelet transforms; Frequency conversion; Image coding; Image quality; Image reconstruction; Partitioning algorithms; Streaming media; Tree data structures;
Conference_Titel :
Intelligent Multimedia, Video and Speech Processing, 2004. Proceedings of 2004 International Symposium on
Print_ISBN :
0-7803-8687-6
DOI :
10.1109/ISIMP.2004.1434083
