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Color space conversion for MPEG decoding on FPGA-augmented TriMedia processor

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4 Author(s)
Sima, M. ; Delft Univ. of Technol., Netherlands ; Vassiliadis, S. ; Cotofana, S. ; van Eijndhoven, J.T.J.

A case study on color space conversion (CSC) for MPEG decoding, carried out on the FPGA-augmented TriMedia processor is presented. That is, a transform from Y'CbCr color space to R'G'B' color space is addressed. First, we outline the extension of TriMedia architecture consisting of FPGA-based reconfigurable functional units (RFU) and associated instructions. Then we analyse a CSC (RFU-specific) instruction which can process four pixels per call, and propose a scheme to implement the CSC operation on RFU(s). When mapped on an ACEX EP1K100 FPGA, the proposed CSC exhibits a latency of 10 and a recovery of 2 TriMedia@200 MHz cycles, and occupies 57% of the device. By configuring the CSC facility on the RFU(s) at application load-time, color space conversion can be computed on FPGA-augmented TriMedia with 40% speed-up over the standard TriMedia.

Published in:

Application-Specific Systems, Architectures, and Processors, 2003. Proceedings. IEEE International Conference on

Date of Conference:

24-26 June 2003