Title :
Orthogonal transforms in sampling structure conversion
Author :
Huuhtanen, Timo ; Renfors, Markku
Author_Institution :
Nokia, Tampere, Finland
Abstract :
Alternative approaches for alias-free sampling structure conversion are considered. A formulation is given which can be utilized to perform decimation and interpolation filtering in the transform domain of an arbitrary orthogonal transform. The selection of transform and filtering specification, and the effects in image quality are also discussed. The multirate filtering problem is shown to consist of two phases: (1) selection of transform and (2) selection of linearly independent set of the subsampled basis functions
Keywords :
filtering and prediction theory; image processing; interpolation; transforms; alias-free sampling structure; decimation; image quality; interpolation filtering; multirate filtering problem; orthogonal transform; sampling structure conversion; subsampled basis functions; Filtering; Filters; Image converters; Image quality; Image sampling; Interpolation; Lattices; Multidimensional systems; Sampling methods; Signal sampling;
Conference_Titel :
Circuits and Systems, 1992. ISCAS '92. Proceedings., 1992 IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0593-0
DOI :
10.1109/ISCAS.1992.230052
