摘要
研究了在低曝光量下光学联合变换相关器位移探测技术的稳健性,为提出的颤震探测系统设计与实现提供可行性论证。通过实际视频,探讨曝光量不足对光学联合变换相关器位移探测的影响。并讨论了不同方差的高斯白噪声对探测的影响。实验结果表明,光学联合变换相关器位移探测技术在欠曝3.5档和存在一定噪声范围内仍能保持良好的运动矢量估计性能,从而说明了光学联合变换相关器像移探测在一定的曝光量范围内仍能准确地得到运动矢量估计,是一种运算速度快、实时性好且稳健性较强的探测技术。
The robustness of motion detection based on joint transform corrlelator （JTC） for images lack of exposure is studied in order to provide feasibility for the proposed vibration detection system. Using real video sequences, the effects of the detection based on JTC without enough exposure are discussed, and effects of Gaussian noise with different variance are discussed. The experiment results show that under 1/23.5 of the appropriate exposure time and with certain noise, the technology maintains its usual performance. The jonit transform correlator is a fast and robust detection technique even for under-exposured images.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2009年第7期1796-1800,共5页
Acta Optica Sinica
基金
国家863计划(2007AAl22150)
国家973计划(2009CB724002)资助项目
关键词
图像处理
稳像
稳健性
欠曝光
光学相关器
image process
image stabilization
robustness
lack of exposure
joint transform correlator
