| 从云纹数字图象直接建立应变场图象的新方法 |
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| 引用本文： | 于起峰,龙涤波.从云纹数字图象直接建立应变场图象的新方法[J].航空学报,1989,10(8):409-412. |
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| 作者姓名： | 于起峰 龙涤波 |
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| 作者单位： | 国防科技大学
(于起峰)，国防科技大学(龙涤波) |
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| 摘 要： | 本文提出一种从云纹数字图象直接建立数字应变场图象的新方法。数字应变场图象直接用图象灰度表示应变大小。此方法不但得到定量的、直观形象的应变场图象,且方法简单,实用,满足工程精度要求。
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| 关 键 词： | 云纹法 数字图象处理 数字应变场图象 |
| 收稿时间： | 1988-04-11; |
A NEW METHOD FOR CONSTRUCTING DIGITAL-STRAIN -FIELD-IMAGE FROM MOIRE PATTERN |
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| National University of Defense Technology Yu Qifeng and Long Dibo.A NEW METHOD FOR CONSTRUCTING DIGITAL-STRAIN -FIELD-IMAGE FROM MOIRE PATTERN[J].Acta Aeronautica et Astronautica Sinica,1989,10(8):409-412. |
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| Authors: | National University of Defense Technology Yu Qifeng and Long Dibo |
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| Institution: | National University of Defense Technology Yu Qifeng and Long Dibo |
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| Abstract: | A new method for constructing digital-strain-field-image from a moire pattern with the help of digital image processing technique is proposed in this paper. The digital-strain-field-image expresses the train values directly by its grey levels. The digital moire image is pre-processed by the separate linear enhancing transformation.Then the digital-strain-field-image can be obtained by making a differentiation for the digital moire pattern and doing a simple division operation. The digital-strain-field-image not Only gives the visual strain-field distribution, but also gives the strain values of every point.This method is simple and applicable and has satisfactory accuracy. |
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| Keywords: | moire digital image processing digital-strain-field-image |
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