Title :
Efficient 2-D analysis/synthesis filter banks for directional image component representation
Author :
Bamberger, Roberto H. ; Smith, Mark J T
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A filter bank for the directional decomposition of images is described. The filter bank represents a union of two powerful image processing tools: directional decomposition and subband decomposition. The directional components correspond to wedge-shaped regions in the frequency spectrum. The filter bank is implemented in a tree structure where each two-band system is maximally decimated and provides either exact or aliasing free reconstruction. The design of the analysis/synthesis filter is such that the filter bank can be implemented in an extremely efficient computational form. The design method described uses conventional 1-D analysis/synthesis filters as prototypes and thereby circumvents designing 2-D filters
Keywords :
frequency response; picture processing; two-dimensional digital filters; 2D analysis/synthesis filter banks; aliasing free reconstruction; directional decomposition; directional image component representation; frequency response; frequency spectrum; image processing; subband decomposition; tree structure; two-band system; wedge-shaped regions; Channel bank filters; Design methodology; Filter bank; Frequency; Image analysis; Image processing; Image reconstruction; Signal analysis; Signal design; Signal synthesis;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112131
