New parallel architecture of the DCT and its inverse for image compression

Bousselmi, Moncef; Bouhlel, Med Salim; Nouri, Mohammad; Kamoun, Lotfı

doi:10.1109/icecs.2000.911552

Cited by 2 publications

(1 citation statement)

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“…This algorithm aims to minimize the number of arithmetic operations to obtain the DCT values. In [4], implementation of DCT and inverse DCT is proposed using Weiping Li algorithm. The resultant design has regular structure and it requires seven constant parallel multipliers.…”

Section: Introductionmentioning

confidence: 99%

High Performance Discrete Cosine Transform Operator Using Multimedia Oriented Subword Parallelism

Khan

Casseau

Ménard

2015

Advances in Computer Engineering

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In this paper an efficient two-dimensional discrete cosine transform (DCT) operator is proposed for multimedia applications. It is based on the DCT operator proposed in Kovac and Ranganathan, 1995. Speed-up is obtained by using multimedia oriented subword parallelism (SWP). Rather than operating on a single pixel, the SWP-based DCT operator performs parallel computations on multiple pixels packed in word size input registers so that the performance of the operator is increased. Special emphasis is made to increase the coordination between pixel sizes and subword sizes to maximize resource utilization rate. Rather than using classical subword sizes (8, 16, and 32 bits), multimedia oriented subword sizes (8, 10, 12, and 16 bits) are used in the proposed DCT operator. The proposed SWP DCT operator unit can be used as a coprocessor for multimedia applications.

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Section: Introductionmentioning

confidence: 99%