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Author:
Journal / Book Title:
Year:
Volume:
Issue:
guang xue kong jian lv bo
Author(s):
HU Sanzhen
Pages:
1
-
3
Year:
1996
Issue:
5
Journal:
Journal of Higher Correspondence Education(Natural Science Edition)
Keyword:
空间频率
;
频谱面
;
彩色图像
;
复振幅分布
;
物平面
;
光学空间滤波
;
低通滤波器
;
匹配滤波器
;
位相物体
;
位相分布
;
Abstract:
<正> 当用阿贝的二次衍射理论来理解透镜的成像过程时,透镜后焦面上的每一亮斑(衍射极大值)与平行光通过物平面后物面上的复振幅分布紧密相关,我们称它为空间频率。若物平面上的复振幅分布具有周期性(如衍射光栅),则空间频率是分立的;若物平面上的复振幅分布是
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