集成电路与嵌入式系统2026，Vol.26Issue(4)：34-40,7.DOI:10.20193/j.ices2097-4191.2025.0135
基于随机数相关性的中值滤波电路设计
Design of median filter circuit based on stochastic number correlation
摘要
Abstract
Stochastic computing(SC),an unconventional computational paradigm,employs probabilities to represent numerical values.This representation enables complex arithmetic operations to be performed using simple logic gates.This work presents a fast unary me-dian filtering circuit design.The proposed filter utilizes counters to generate stochastic numbers(SNs)and constructs fundamental sor-ting network units using stochastic correlation logic.A feedback loop,formed based on the output,dynamically terminates computations early without consuming additional hardware area,significantly reducing substantial circuit latency.The experimental results demon-strate that the proposed median filter design outperforms existing implementations in both actual bitstream length and energy consump-tion.Specifically,the proposed 3×3 window median filter circuit achieves a 55.58%reduction in energy.Further validation using medi-an filtering on images corrupted by salt-and-pepper noise confirms the accuracy of the proposed circuit.For a 16-input sorting network application,the proposed design exhibits lower consumption when inputs range within[0,0.5],achieving up to a 50%reduction in ac-tual bitstream length and energy consumption.关键词
随机计算/中值滤波/排序网络/相关性Key words
stochastic computing/median filter/sorting network/correlation分类
信息技术与安全科学引用本文复制引用
代雲琼,吴育彰,汪盛,余福安,孙汪鸿,张永强,王少威..基于随机数相关性的中值滤波电路设计[J].集成电路与嵌入式系统,2026,26(4):34-40,7.基金项目
国家自然科学基金(62404067) （62404067）
中央高校基本科研业务费专项资金(JZ2025HGTB0231) （JZ2025HGTB0231）
