A cost-effective architecture for 8 × 8 two-dimensional DCT/IDCT using direct method
Journal
IEEE Transactions on Circuits and Systems for Video Technology
Journal Volume
7
Journal Issue
3
Pages
459-467
Date Issued
1997
Author(s)
Abstract
In this paper, we develop a novel 8 × 8 two-dimensional (2-D) discrete cosine transform/inverse discrete cosine transform (DCT/IDCT) architecture based on the direct 2-D approach and the rotation technique. The computational complexity is reduced by taking advantage of the special attribute of complex number. Both the parallel and the folded architectures are proposed. Unlike other approaches, the proposed architecture is regular and economically allowable for VLSI implementation. Compared to the row-column method, less internal wordlength is needed in order to meet the error requirement of IDCT, and the throughput of the proposed architecture can achieve two times that of the row-column method with 30% hardware increased. © 1997 IEEE.
Subjects
DCT/IDCT; Direct 2-D approach; Finite wordlength analysis
Other Subjects
Computational complexity; Computer architecture; Computer hardware; Cost effectiveness; Error analysis; Mathematical transformations; VLSI circuits; Finite wordlength analysis; Inverse discrete cosine transform (IDCT); Image compression
Type
journal article