Pentium-MMX based implementation of a digital copier

被引：6

作者：

Ahn, JW ^{[1
]}

Sung, W ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Elect Engn, Kwanak Gu, Seoul 151742, South Korea

来源：

1998 IEEE WORKSHOP ON SIGNAL PROCESSING SYSTEMS-SIPS 98: DESIGN AND IMPLEMENTATION | 1998年

关键词：

D O I：

10.1109/SIPS.1998.715777

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, we develop real-time image processing programs for a digital copier using a general purpose microprocessor. To exploit the inherent data parallelism in many image processing algorithms, we use the Intel's Pentium processor with multimedia-extension (MMX). Each step of the digital copier process including the X-Zoom and the error diffusion halftoning is aggressively optimized for the Pentium MMX processor. The X-Zoom process that is based on the linear interpolation method is optimized using the software pipelining technique. For the error diffusion halftoning which requires non-linear feedback, we exploit both the control-level and data-level parallelism. For the latter approach, a speculative quantization method is developed to break the dependency relation due to feedback and quantization operations. Our implementation acquires the maximum throughput of 30 ppm for the A4 size paper using one 166MHZ Pentium MMX CPU, which is approximately five times faster than the code without MMX optimization.

引用

页码：142 / 151

页数：10