He Guo
Professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Gender:Male
Alma Mater:大连理工大学
Degree:Master's Degree
School/Department:软件学院、国际信息与软件学院
Contact Information:guohe@dlut.edu.cn
E-Mail:guohe@dlut.edu.cn
Hits:
Indexed by:会议论文
Date of Publication:2013-12-16
Included Journals:EI、CPCI-S、Scopus
Volume:1
Page Number:315-319
Key Words:Histogram Specification; Group Mapping Law; Difference Matrix; Compute Unified Device Architecture
Abstract:Histogram specification based on group mapping law (GML) is a classical and important approach in many application areas like image enhancement. However, its computation is quite expensive because of the complex mapping law. This paper proposes a novel method to perform GML by constructing a different matrix between original cumulative histogram and specified cumulative histogram. The next step is to search the minimums in each row and column of the matrix, and the final mapping function can be obtained by the indexes of minimums. The whole algorithm is suitable for parallel computing, so we design a fast structure for histogram specification based on GML using Compute Unified Device Architecture (CUDA), which fully exploits the computing resources of GPUs, such as shared memory. Compared to the CPU counterpart, our method attains a speedup factor of 11 on image size of 2048x2048. In addition, we analyze the efficiency of two key parts, namely parallel repacking histogram, and parallel searching minimum values and mapping. Moreover, accuracy measures are calculated to ensure the correctness of the parallel algorithm.
教育背景：
学士学位：吉林大学计算机系，1982
硕士学位：大连理工大学计算机系，1989
科研与工作经历：
1986年10月—1987年10月，新西兰Progeni Company，访问学者
1990年10月—1992年12月，德国PDI Karlsruhe University计算机系，访问学者
1992年12月—2007年12月，大连理工大学计算机系，副教授
1995年3月—1996年6月，大连市金卡工程系统，总工程师
2008年1月—今，大连理工大学软件学院，教授
2020年4月 退休
教学工作：
1992年—2007年，计算机导论，计算机组织与结构，计算机系统结构
2009年—2019年，存储技术，计算机系统结构，并行计算
科研：
研究兴趣：并行与分布式计算。
