Title :
Real-time 2-D homomorphic filter for broadcast TV signals
Author :
Kaufman, H.J. ; Sid-Ahmed, M.A.
Author_Institution :
Dept. of Electr. Eng., Windsor Univ., Ont., Canada
fDate :
5/1/1992 12:00:00 AM
Abstract :
Hardware design and implementation of a 2-D sample- and-hold semisystolic filter structure are presented. Log and antilog circuits are utilized with a high-frequency emphasis IIR (infinite impulse response) filter to provide homomorphic filtering. Hardware design is discussed with reference to specific device types and characteristics. A prototype circuit using MSI and MSI circuits on a custom-made PCB (printed circuit board) is shown along with applications to real-time filtering of broadcast TV images
Keywords :
picture processing; real-time systems; sample and hold circuits; two-dimensional digital filters; video signals; 2-D sample- and-hold semisystolic filter structure; antilog circuits; broadcast TV signals; custom-made PCB; hardware design; high-frequency emphasis IIR filter; high-speed analog IC; implementation; logarithmic converter; real-time 2D homorphic filter; Application software; Circuits; Digital filters; Filtering; Finite impulse response filter; Hardware; IIR filters; Nonlinear filters; TV broadcasting; Transversal filters;
Journal_Title :
Consumer Electronics, IEEE Transactions on
