Maximally flat half-band diamond-shaped FIR filters using the Bernstein polynomial
Todor Cooklev, Toshiyuki Yoshida, Akinori Nishihara · IEEE Transactions on Circuits and Systems II Analog and Digital Signal Processing · 1993
Two-dimensional (2-D) linear-phase diamond-shaped (DS) FIR digital filters have important image processing applications. They are used in sampling structure conversion, e.g. interlace-to-progressive conversion. Maximally flat (MF) DS filters have attractive time- and frequency-domain properties and are preferred in some applications. In this correspondence MF half-band DS FIR are designed using the two-variable Bernstein polynomial. Formulas for the transfer function and the impulse response are obtained.>