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学科主题: 临床医学
题名:
A high-efficiency digital image correlation method based on a fast recursive scheme
作者: Huang, Jianyong1,2; Zhu, Tao1,2; Pan, Xiaochang1,2; Qin, Lei2,3; Peng, Xiaoling1,2; Xiong, Chunyang1; Fang, Jing1,2
关键词: zero-normalized cross correlation ; sum tables ; fast recursive algorithm ; cell-substrate displacement measurement
刊名: MEASUREMENT SCIENCE & TECHNOLOGY
发表日期: 2010-03-01
DOI: 10.1088/0957-0233/21/3/035101
卷: 21, 期:3
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Engineering, Multidisciplinary ; Instruments & Instrumentation
研究领域[WOS]: Engineering ; Instruments & Instrumentation
关键词[WOS]: NORMALIZED CROSS-CORRELATION ; TRACTION FORCE MICROSCOPY ; DEFORMATION MEASUREMENTS ; EXPERIMENTAL MECHANICS ; SUBSET SIZE ; STRAIN ; ENERGY ; CELLS
英文摘要:

Due to computational complexity of correlation searching, the digital image correlation (DIC) method is often extremely time consuming in image processing and optical measurement, which has limited its further applications to a great extent. This paper develops a fast recursive scheme to mathematically reduce the computational burden of the traditional DIC technique and therefore improve its efficiency in deformation calculation. A global sum-table approach is proposed to simplify the computations of all double sums arising in the zero-normalized cross-correlation coefficient (ZNCC). A fast recursive algorithm is established to accelerate the calculation of the cross-correlation term in the ZNCC. Both theoretical analysis and actual displacement acquisition are carried out to validate the performance of the new DIC algorithm, which indicates that the fast recursive scheme can improve computational efficiency of integer-pixel correlation searching by about 10 to 50 times in comparison with the classic DIC algorithm, on the condition of keeping the measurement accuracy.

语种: 英语
所属项目编号: 2007CB935602 ; 90607004 ; 10672005 ; 10872008
项目资助者: National Basic Research Program of China ; National Natural Science Foundation of China
WOS记录号: WOS:000274488400002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/54089
Appears in Collections:北京大学第三临床医学院_心血管内科_期刊论文

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作者单位: 1.Peking Univ, Dept Biomed Engn, Beijing 100871, Peoples R China
2.Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China
3.Peking Univ Third Hosp, Inst Vasc Med, Beijing 100083, Peoples R China

Recommended Citation:
Huang, Jianyong,Zhu, Tao,Pan, Xiaochang,et al. A high-efficiency digital image correlation method based on a fast recursive scheme[J]. MEASUREMENT SCIENCE & TECHNOLOGY,2010,21(3).
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