强背景光的高频目标物频谱分析及信息提取  

Spatial Spectrum Analysis and Information Extraction of the High-spatial-frequency Object with the Strong Background Light

作　　者：林浩亮[1] 刘南生[1] 钱炳锋[2] 魏升[1] 

机构地区：[1]南昌大学理学院,江西南昌330031 [2]南昌大学机电工程学院,江西南昌330031

出　　处：《南昌大学学报（理科版）》2008年第1期38-41,45,共5页Journal of Nanchang University(Natural Science)

基　　金：国家自然科学基金资助项目(50565003);江西省科技厅重大科技攻关资助项目(Z03388)

摘　　要：为排除强背景光,分析说明了背景光和投影栅条纹的在空域和频域的分布特点,提出了空间滤波器的设计方案,并通过计算机模拟证明:以布莱克曼函数作边缘分布的带通滤波器,能有效地抑制"吉布斯效应",从而排除强背景光,提取清晰的光栅条纹。The characteristic of the distribution of the background light and the deformed grating patterns are analyzed, and the corresponding spatial spectrum filter is designed. The computer simulation proves that the band - pass filter with the Blackman - marginal image, so as to abstract the grating -distribution can restrain the “Oscillation Effect”, patterns form the strong backlight. advance the acutance of the

关 键 词：信息光学 光学空间滤波 窗函数 

分 类 号：O438.2[机械工程—光学工程]