Title :
A real-time 2-D median based filter for video signals
Author :
Li, Jim S. Jimmy
Author_Institution :
Dept. of Electr. & Electron. Eng., Canterbury Univ., Christchurch
fDate :
5/1/1993 12:00:00 AM
Abstract :
A 2-D, multishell median-based filter for real-time video signal processing is presented. The device is able to remove impulse and missing line noise in real-time without blurring sharp video images. A prototype using 75 standard transistor-transistor logic (TTL) chips has been realized on one single speedwire prototype board of size 17×30 cm2 and its structure is suitable for VLSI implementation. The statistical performance of the nonlinear filter has been investigated and compared with that of standard 2-D median filters. It is shown that the filter has characteristics superior to those of its median-based counterparts while the hardware implementation is much simpler
Keywords :
image processing equipment; interference suppression; random noise; real-time systems; transistor-transistor logic; two-dimensional digital filters; video equipment; TTL chips; VLSI implementation; blurring; hardware implementation; impulse noise; missing line noise; multishell filter; nonlinear filter; prototype; real-time 2-D median based filter; signal processing; speedwire prototype board; statistical performance; transistor-transistor logic; two dimensional filter; video signals; Adaptive filters; Decoding; Design engineering; Filtering; Hardware; Prototypes; Signal processing; Silicon; Very large scale integration; Video signal processing;
Journal_Title :
Consumer Electronics, IEEE Transactions on
