Displacement measurement using phase joint transform correlators

被引：0
|
作者：
Ge Peng [1 ]
Li Qi [1 ]
Feng Hua-jun [1 ]
Xu Zhi-hai [1 ]
机构：
[1] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China
来源：
5TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTICAL TEST AND MEASUREMENT TECHNOLOGY AND EQUIPMENT | 2010年 / 7656卷
关键词：
Image processing; image stabilization; displacement measurement; joint transform correlator; phase spatial light modulator;
D O I：
10.1117/12.864958
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Since joint transform correlators based on amplitude light modulator have poor light efficiency and low cross-correlation peak, a displacement measurement method based on spatial light modulator is proposed. After the input images were coded by phase spatial light modulator, corresponding displacement between the adjacent two pictures could be detected through the joint transform correlator. Experiments were carried out with under-exposed images. The experimental results showed that phase joint transform correlators had better discrimination. The proposed technique is very effective for motion detection under circumstances of low illumination.
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页数：7
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