Title :
Local interpolation in multiresolution decomposition of images
Author :
Simon, B. ; Mertès, J.Y. ; Ciblat, Ph ; Macq, B.
Author_Institution :
Lab. TELE, Univ. Catholique de Louvain, Belgium
Abstract :
A simple interpolation method from low frequencies to high frequencies in a two-band filter bank is shown to be a very efficient way for enhancing signal zooming or for erasing blocking artifacts. This paper introduces a new and simple way for generating that spatial adaptability of the filters. It shows that a linear interpolation between the two subbands can be reduced to a modification of the filters. From this result, a local adaptation of the filters is envisaged for two applications: signal zooming and reduction of blocking artifacts in multigrid decomposition of images
Keywords :
adaptive filters; adaptive signal processing; band-pass filters; filtering theory; image enhancement; image resolution; interpolation; blocking artifacts; high frequencies; linear interpolation; local adaptation; local interpolation; low frequencies; multigrid decomposition of images; multiresolution image decomposition; signal zooming; spatial adaptability; two-band filter bank; Decorrelation; Filter bank; Frequency; Image coding; Image reconstruction; Image resolution; Interpolation; Nonlinear filters; Signal resolution; Spatial resolution;
Conference_Titel :
Image Processing, 1996. Proceedings., International Conference on
Conference_Location :
Lausanne
Print_ISBN :
0-7803-3259-8
DOI :
10.1109/ICIP.1996.559489
