Architectures for generalized 2D FIR filtering using separable filter structures

The problem of generalized 2D FIR filtering for large filter kernel sizes can be computationally prohibitive when required in real-time, such as with video applications. In this paper, we describe architectures and design methods for generalized 2D FIR filtering employing LOGIC Devices' LF33xx (HV filter) family of devices. The LF33xx family of devices is designed to perform dimensionally separate filtering (row/column) along orthogonal axes (horizontal direction and vertical direction for video applications). Additionally, we will briefly review 2D filter design and kernel separability theory.