TY - GEN
T1 - A comparative study of image compression based on directional wavelets
AU - Li, Kun
AU - Xu, Wenli
AU - Dai, Qionghai
AU - Wang, Yao
PY - 2007
Y1 - 2007
N2 - Discrete wavelet transform is an effective tool to generate scalable stream, but it cannot efficiently represent edges which are not aligned in horizontal or vertical directions, while natural images often contain rich edges and textures of this kind. Hence, recently, intensive research has been focused particularly on the directional wavelets which can effectively represent directional attributes of images. Specifically, there are two categories of directional wavelets: redundant wavelets (RW) and adaptive directional wavelets (ADW). One representative redundant wavelet is the dual-tree discrete wavelet transform (DDWT), while adaptive directional wavelets can be further categorized into two types: with or without side information. In this paper, we briefly introduce directional wavelets and compare their directional bases and image compression performances.
AB - Discrete wavelet transform is an effective tool to generate scalable stream, but it cannot efficiently represent edges which are not aligned in horizontal or vertical directions, while natural images often contain rich edges and textures of this kind. Hence, recently, intensive research has been focused particularly on the directional wavelets which can effectively represent directional attributes of images. Specifically, there are two categories of directional wavelets: redundant wavelets (RW) and adaptive directional wavelets (ADW). One representative redundant wavelet is the dual-tree discrete wavelet transform (DDWT), while adaptive directional wavelets can be further categorized into two types: with or without side information. In this paper, we briefly introduce directional wavelets and compare their directional bases and image compression performances.
KW - Adaptive directional wavelets
KW - Basis functions
KW - Compression performances
KW - Context-based arithmetic coding
KW - Directional wavelets
KW - Discrete wavelet transform
KW - Dual-tree discrete wavelet transform
KW - Redundant wavelets
KW - Scalable image coding
KW - Side information
UR - http://www.scopus.com/inward/record.url?scp=35148821360&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35148821360&partnerID=8YFLogxK
U2 - 10.1117/12.698146
DO - 10.1117/12.698146
M3 - Conference contribution
AN - SCOPUS:35148821360
SN - 0819466212
SN - 9780819466211
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Proceedings of SPIE-IS and T Electronic Imaging - Visual Communications and Image Processing 2007
PB - SPIE
T2 - Visual Communications and Image Processing 2007
Y2 - 30 January 2007 through 1 February 2007
ER -