Fast Design of 2-D Narrow Bandstop FIR Filters for Image Enhancement

摘要

Novel approach in the design of 2-D extremely narrow band-stop FIR filters is presented. The completely analytical design method is based on the 1-D optimal bandstop FIR filters. The 1-D FIR optimal bandstop filters are based on Zolotarev polynomial. Closed form formulas for the design of the filters are presented. One example demonstrates the design procedure. Application of the 2-D narrow bandstop FIR filter for image enhancement is presented.