Title :
A signal reconstruction method based on an unwrapping of signals in transform domain
Author :
Zavarsky, Pavol ; Kambayashi, N. ; Chokchait, Soinchart ; Iwahashi, Masahiro ; Kamiya, Masahiro
Author_Institution :
Dept. of Electr. Eng., Nagaoka Univ. of Technol., Niigata, Japan
Abstract :
An unwrapping of signal coefficients in transform domain is proposed for applications in which a lossy operation is performed on the coefficients between analysis and synthesis of biorthogonal perfect reconstruction filter banks. In the unwrapping the analyzed signal is represented as a sum of its elements in linear mutually orthogonal signal subspaces. It is shown that the unwrapping-based modification of signal-to-additive ratio can employ the fact that an implementation of a biorthogonal decomposition is characterized by a mutually orthogonal eigenvectors. An example to illustrate the benefits of the presented approach in lossy image compression applications is shown
Keywords :
data compression; eigenvalues and eigenfunctions; image coding; image reconstruction; biorthogonal decomposition; biorthogonal perfect reconstruction filter banks; linear mutually orthogonal signal subspaces; lossy image compression applications; lossy operation; mutually orthogonal eigenvectors; signal coefficients; signal reconstruction; signal-to-additive ratio; transform domain; unwrapping of signals; Filter bank; Frequency; Nonlinear filters; Signal processing; Signal reconstruction; Signal sampling; Silicon carbide;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921030
