大容量体全息相关识别系统的相关峰光斑自动定位

硅酸盐通报 ›› 2009, Vol. 28 ›› Issue (6): 1186-1190.

大容量体全息相关识别系统的相关峰光斑自动定位

孟凡伟;赵业权;张学锋;杨永刚

哈尔滨工业大学航天学院,哈尔滨,150001

出版日期:2009-12-15 发布日期:2021-01-15

Automatic Allocation of Correlation Peaks of Large Capacity Volume Holographic Correlation Recognition Systems

MENG Fan-wei;ZHAO Ye-quan;ZHANG Xue-feng;YANG Yong-gang

Online:2009-12-15 Published:2021-01-15

摘要/Abstract

摘要： 选用近化学计量比Mg:Fe:LiNbO_3 晶体作为存储器和相关器件,由于其良好的光学均匀性使得系统的散射噪声大量减少,从而显著改善了相关峰的质量.以邻域熵目标检测为基础,提出了一种基于邻域方差增长的相关峰光斑自动定位算法.不仅能够明确的区分边缘纹理和目标,而且定位不受背景亮度的影响.在1000幅的存储容量下,针对1024×768像素大小的相关读出图像,定位时间<3 s,且定位准确,取得了比较满意的识别结果.

Abstract: To increase the quality of correlation peaks, near stoichiometric Mg:Fe:LiNbO_3 crystals is used as memory and correlator due to its better uniformity and optical quality. A correlation peaks allocation algorithm based on neighborhood variance increment is presented, which is on the foundation of neighborhood entropy. This algorithm not only can distinguish target from edge texture, but also is not influenced by background intensity. With 1000 holograms stored, it takes less than 3 s to allocate correlation peaks accurately against correlation output image with 1024×768 pixels, and a satisfied recognition result is also achieved.

Key words: volume holographic correlation recognition%near stoichiometric Mg:Fe:LiNbO_3 crystals%neighborhood variance increment

中图分类号:

TP391

孟凡伟;赵业权;张学锋;杨永刚. 大容量体全息相关识别系统的相关峰光斑自动定位[J]. 硅酸盐通报, 2009, 28(6): 1186-1190.

MENG Fan-wei;ZHAO Ye-quan;ZHANG Xue-feng;YANG Yong-gang. Automatic Allocation of Correlation Peaks of Large Capacity Volume Holographic Correlation Recognition Systems[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2009, 28(6): 1186-1190.

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