Quality and complexity measurement of 2D-DCT archietecture using loeffler algorithm along with CSD and CSE

Abstract

To optimize the Discrete Cosine Transform (DCT) in terms of size and to improve the quality of the image in image compression, in this paper, A 2D-DCT using Loeffler algorithm along with Canonical Signed Digit (CSD) and Canonical Sub expression Elimination (CSE) has been proposed. For fast computation 2-DCT/IDCT is executed by using 1D DCT row column method. The performance of the proposed architecture has been evaluated and compared with the other technique.