Title :
Practical design rules for minimax linear phase diamond-shaped 2-D FIR low-pass filters
Author :
Lim, Y.C. ; Low, S.H.
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
fDate :
11/1/1997 12:00:00 AM
Abstract :
Diamond-shaped filters are used as antialiasing filters in the conversion between images sampled on the rectangular and quincunx sampling grids. Here we investigate some characteristics of the linear phase diamond-shaped low-pass filters and present a set of design rules applicable to the design of such filters optimal in the minimax error sense. The design rules provide good estimates for the minimum filter support size required to satisfy a given set of specifications. In most cases, the difference between the estimated minimum filter support size and the actual minimum filter support size is less than 5%
Keywords :
FIR filters; antialiasing; delay circuits; filtering theory; image sampling; linear programming; low-pass filters; minimax techniques; two-dimensional digital filters; FIR low-pass filters; antialiasing filters; design rules; diamond-shaped 2D FIR filters; minimax error sense optimal filters; minimax linear phase filters; minimum filter support size; quincunx sampling grids; rectangular sampling grids; Digital filters; Finite impulse response filter; Frequency response; Image converters; Image sampling; Low pass filters; Minimax techniques; Motion pictures; Nonlinear filters; Passband;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
