Title :
Bit level systolic arrays for real time median filters
Author :
Chang, Long-Wen ; Lin, Jing-Ho
Author_Institution :
Inst. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
A bit-level systolic array based on the majority of a bit string of the input samples for a one-dimensional standard median filter is developed. The majority function is implemented by a 1-b odd/even transposition network, which can be designed very easily. For a window size n, the latency time and the computation time of the array are about n+6 times the gate delay. A bit-level systolic array for 2-D separable median filter is also proposed. It is constructed using the basic cells of the 1-D standard median filter
Keywords :
digital filters; real-time systems; systolic arrays; 1D standard median filter; 2D separable median filter; bit string; bit-level systolic array; computation time; latency time; odd/even transposition network; one-dimensional standard median filter; real time median filters; Computer science; Delay effects; Filters; Image processing; Nonlinear filters; Smoothing methods; Speech enhancement; Speech processing; Standards development; Systolic arrays; Very large scale integration;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.115836
