Two dimensional IIR and FIR digital notch filter design
نویسندگان
چکیده
In this paper, the two dimensional (2D) digital notch filter design problem is investigated. First, we develop a simple algebraic method for 2D IIR notch filter design. This approach not only has closed-form transfer function but also satisfies bounded input bunded output ( ~ 1 ~ 0 ) stability condition. Next, we use Lagrange multiplier method to design 2D FIR notch filters. This design is optimal in least square sense. Finally, we apply the 2D notch filter to eliminate sinusoidal or narrowband interferences superimposed on an image. Simulation results are presented to demonstrate the effectiveness of these approaches.
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