DocumentCode
2312259
Title
Oversampled lapped transforms via time-domain pre- and post-processing
Author
Lu Gan ; Ma, Kui-Kuung
Author_Institution
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Volume
3
fYear
2003
fDate
14-17 Sept. 2003
Abstract
This paper introduces a large family of oversampled lapped transforms with symmetric basis functions. These new transforms are implemented by adding time-domain oversampled pre- and post- filters to the DCT and the IDCT, respectively. Structures and parameterizations of the corresponding pre-/postfilters are proposed. Two design examples along with some image coding results are presented to demonstrate the validity of the theory and the potential of the new transforms.
Keywords
discrete cosine transforms; image coding; image reconstruction; smoothing methods; DCT; discrete cosine transform; image coding; lattice structure; oversampled lapped transforms; perfect reconstruction property; postfilters; prefilters; symmetric basis functions; time-domain postprocessing; time-domain preprocessing; Decoding; Discrete cosine transforms; Filter bank; Floors; Image coding; Image reconstruction; Lattices; Sampling methods; Time domain analysis; Transform coding;
fLanguage
English
Publisher
ieee
Conference_Titel
Image Processing, 2003. ICIP 2003. Proceedings. 2003 International Conference on
ISSN
1522-4880
Print_ISBN
0-7803-7750-8
Type
conf
DOI
10.1109/ICIP.2003.1247222
Filename
1247222
Link To Document