Title :
Lifting-based Laplacian Pyramid reconstruction schemes
Author :
Liu, Lijie ; Gan, Lu ; Tran, Trac D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Johns Hopkins Univ., Baltimore, MD
Abstract :
Laplacian Pyramid (LP) provides a redundant signal representation and can be characterized as an oversampled filter bank (FB). In this paper, a generic lifting-based parameterization reconstruction algorithm is proposed to characterize all LP synthesis banks that can satisfy the perfect reconstruction property. Two typical lifting-based LP reconstruction schemes are then derived from this general representation. The first scheme presents the dual frame LP reconstruction and its closed-form solutions for any LP filters. The second LP reconstruction scheme leads to an efficient FB, which demonstrates improvements over the usual LP reconstruction in the presence of noise.
Keywords :
channel bank filters; image reconstruction; signal representation; Laplacian pyramid reconstruction; generic lifting; oversampled filter bank; parameterization reconstruction; signal representation; Design engineering; Filter bank; Gallium nitride; Image reconstruction; Laplace equations; Reconstruction algorithms; Signal design; Signal generators; Signal representations; Video coding; Laplacian pyramid; dual frame; lifting; oversampled filter bank;
Conference_Titel :
Image Processing, 2008. ICIP 2008. 15th IEEE International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-1765-0
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2008.4712379
