遥感相机焦面CCD机械拼接中重叠像元数的确定

吕恒毅; 刘杨; 郭永飞

doi:10.3788/OPE.20122005.1041

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遥感相机焦面CCD机械拼接中重叠像元数的确定

微纳技术与精密机械 | 更新时间：2020-08-12

- 遥感相机焦面CCD机械拼接中重叠像元数的确定
- Computation of overlapping pixels of mechanical assembly CCD focal planes in remote sensing cameras
- 光学精密工程 2012年20卷第5期页码：1041-1047
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 哈尔滨工业大学控制科学与工程系,黑龙江哈尔滨,150001
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(No.61036015)()
- DOI：10.3788/OPE.20122005.1041
  中图分类号： V443.5
- 收稿日期：2011-09-30，
  
  修回日期：2011-11-26，
  
  网络出版日期：2012-05-10，
  
  纸质出版日期：2012-05-10
- 稿件说明：
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吕恒毅, 刘杨, 郭永飞. 遥感相机焦面CCD机械拼接中重叠像元数的确定[J]. 光学精密工程, 2012,20(5): 1041-1047

L? Heng-yi, LIU Yang, GUO Yong-fei. Computation of overlapping pixels of mechanical assembly CCD focal planes in remote sensing cameras[J]. Editorial Office of Optics and Precision Engineering, 2012,20(5): 1041-1047
吕恒毅, 刘杨, 郭永飞. 遥感相机焦面CCD机械拼接中重叠像元数的确定[J]. 光学精密工程, 2012,20(5): 1041-1047 DOI： 10.3788/OPE.20122005.1041.

L? Heng-yi, LIU Yang, GUO Yong-fei. Computation of overlapping pixels of mechanical assembly CCD focal planes in remote sensing cameras[J]. Editorial Office of Optics and Precision Engineering, 2012,20(5): 1041-1047 DOI： 10.3788/OPE.20122005.1041.

摘要

针对推扫式遥感相机前后摆成像中焦面拼接的CCD其像片间出现视场漏缝的问题

提出了一种焦面CCD的非均匀重叠像元数机械拼接方法。首先

构造了相机前后摆的成像原理模型;接着

分析了CCD间产生地面视场漏缝的原因

并依据模型推导出相机前摆和后摆时各CCD视场间漏缝大小的数学公式

从而得到各片间容许的最少重叠像元数量公式。在此基础上

进一步给出了后续电子学图像拼接与配准中片间重复像元数的函数形式

为实现图像无缝拼接提供了软件实现依据。分析表明

该方法的理论误差

小于一个像元尺寸

即

|/D|<1

。最后

给出了工程应用实例。

Abstract

According to the imaging gaps caused by scrolling imaging in the conventional assembled focal plane for a push-broom camera

a mechanical assembling method with uneven overlapping pixels was proposed. Firstly

a model was established to simulate the imaging process when the camera was scrolled. Then

the reason that the gaps appear was analyzed

and a mathematical formula for the gaps between the CCD viewing fields at a certain scrolling angle was derived. Accordingly

the allowable minimum quantity of the overlapping pixels between every two CCDs was derived as well. On these bases

a function of overlapping pixels of images was given for subsequent software programs to eliminate the superfluous pixels and to realize the gapless assembly. Analysis indicates that the error

of this assembling method is less than one pixel

which satisfies

|/D|<1

. Finally

an example was given.

关键词

Keywords

references

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