Accurate and simple digital volume correlation using pre-interpolation
文献类型：期刊论文
| 作者 | Li,Chengsheng1,2; Shu,Rongjun1,2 |
| 刊名 | Measurement Science and Technology
 |
| 出版日期 | 2020-06-10 |
| 卷号 | 31期号:9 |
| 关键词 | digital volume correlation pre-interpolation nearest sub-volume offset cubic spline |
| ISSN号 | 0957-0233 |
| DOI | 10.1088/1361-6501/ab85b0 |
| 英文摘要 | AbstractExisting incremental digital volume correlation methods can reduce the number of errors introduced by interpolation calculations in the inverse-compositional Gauss–Newton (IC-GN) algorithm iteration. However, the accuracy of these existing methods is insufficient for some conditions as the curve-fitting method has high computational efficiency but lacks accuracy. A simple pre-interpolation method is proposed to improve the accuracy and computational efficiency of digital volume correlation. First, the pretreatment of a deformed volume image is calculated by the cubic spline interpolation method with the most often chosen interpolation step of 1/2 sub-voxel. Next, the pre-interpolation is calculated only once and the block calculation techniques solve the memory problem. Then, the reference sub-volume in the updated reference volume image is translated into the nearest half-integer voxel position instead of the integer voxel position or other sub-voxel positions. The pre-interpolation method is applied to both the IC-GN algorithm and the curve-fitting method. Experimental results show that the maximum mean bias error and the maximum standard deviation of the improved IC-GN algorithm are reduced by 34% and 75%, respectively. The improved curve-fitting has better accuracy and computational efficiency than the IC-GN algorithm under small strain and the curve-fitting method can achieve about 3.2 times speedup than the IC-GN algorithm. |
| 语种 | 英语 |
| WOS记录号 | IOP:0957-0233-31-9-AB85B0 |
| 出版者 | IOP Publishing |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/15568]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li,Chengsheng |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Li,Chengsheng,Shu,Rongjun. Accurate and simple digital volume correlation using pre-interpolation[J]. Measurement Science and Technology,2020,31(9). |
| APA | Li,Chengsheng,&Shu,Rongjun.(2020).Accurate and simple digital volume correlation using pre-interpolation.Measurement Science and Technology,31(9). |
| MLA | Li,Chengsheng,et al."Accurate and simple digital volume correlation using pre-interpolation".Measurement Science and Technology 31.9(2020). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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