Title :
Area-efficient 2-D digital filter architectures possessing diagonal and four-fold rotational symmetries
Author :
Pei-Yu Chen ; Lan-Da Van ; Reddy, Hari C. ; I-Hung Khoo
Author_Institution :
Dept. of Comput. Sci., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
In this paper, two area-efficient two-dimensional (2-D) IIR filter architectures for 2-D transfer function with diagonal and four-fold rotational symmetries are proposed for image processing. For this purpose, two different intermediate transfer functions are applied and the corresponding two new filter architectures are obtained. Under satisfactory average error performance, we determine that the new filter structure requires less multiplier wordlength than the previously published Type-1 filter structure. With the features of less numerator multiplier wordlength and shorter critical path, the proposed diagonal and four-fold rotational symmetry filter architectures can result in 10.17% and 3.35% area reduction with respect to the published Type-1 IIR filter structures with diagonal and four-fold rotational symmetries in terms of synthesis results.
Keywords :
IIR filters; image processing; transfer functions; two-dimensional digital filters; 2D transfer function; area-efficient 2D digital filter architectures; average error performance; diagonal rotational symmetry filter architectures; filter structure; four-fold rotational symmetry filter architectures; image processing; intermediate transfer functions; multiplier wordlength; two area-efficient two-dimensional IIR filter architectures; type-1 filter structure; Computer architecture; Filtering theory; Finite impulse response filters; IIR filters; Transfer functions; Very large scale integration;
Conference_Titel :
Information, Communications and Signal Processing (ICICS) 2013 9th International Conference on
Conference_Location :
Tainan
Print_ISBN :
978-1-4799-0433-4
DOI :
10.1109/ICICS.2013.6782888