Matched Filtering of Small-Sized Objects in Images Containing Constant Spatial Interference

被引:0
|
作者
Gromilin, G. I. [1 ]
Kosykh, V. P. [1 ]
Yakovenko, N. S. [1 ]
机构
[1] Russian Acad Sci, Inst Automat & Electrometry, Siberian Branch, Novosibirsk 630090, Russia
关键词
matrix photodetector; spatial inhomogeneity of photoelectric characteristics; detection of small-sized objects; detection reliability; NONUNIFORMITY CORRECTION ALGORITHM;
D O I
10.3103/S8756699020040068
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The influence of spatial inhomogeneity of the photoelectric characteristics of a matrix photodetector (PDD) on the quality of detection of small-sized objects in the image formed by it is considered. It is shown that in the conditions of spatially inhomogeneous natural noise of the PDD, the traditionally applied two-point correction is not optimal for subsequent matched image filtering performed in order to increase the reliability of object detection. A two-stage algorithm for constructing a linear spatially invariant matched filter is proposed, which provides a significant increase in the reliability of detecting weak small-sized objects against the background of uncorrelated noise in images containing interference due to the spatial heterogeneity of the PDD characteristics.
引用
收藏
页码:440 / 447
页数:8
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