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Technical Program

Paper Detail

Paper:	DISPS-P1.4
Session:	VLSI Architectures and Algorithms for Image and Video Processing
Time:	Tuesday, May 16, 14:00 - 16:00
Presentation:	Poster
Topic:	Design and Implementation of Signal Processing Systems: Hardware, Software, and Algorithm Tradeoffs and Integration
Title:	Structurally Orthogonal Finite Precision Implementation of the Eight Point DCT
Authors:	Marek Parfieniuk, Alexander Petrovsky, Bialystok Technical University, Poland
Abstract:	This paper presents a novel approach to the finite precision implementation of the eight point discrete cosine transform (DCT). Two multiplierless computational schemes of the plane rotation block are constructed to obtain the transform approximations maintaining orthogonality regardless of their coefficient quantization. This is the main difference with respect to the solutions based on lifting schemes being developed in recent years, characterized by inherent biorthogonality. In our technique, structural orthogonality comes at the cost of a complexity increase. To keep it at a moderate level, we implement rotations effectively using the denormalized lattice and the three-value coordinate rotation digital computer (CORDIC) algorithm with double µ-rotations.