共查询到19条相似文献,搜索用时 109 毫秒
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本文论述了合成孔径雷达光学处理器的基本原理及特点,着重描述了光学处理器的光学系统.同时给出了该系统的设计方法和一些要考虑的问题. 相似文献
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合成孔径雷达光学处理器(OSARP)与普通成像系统不同,它处理合成孔径雷达(SAR),数据片.因此,我们不仅要检测OSARP的成像质量还要检测它的功能.本文提供一种检测OSARP的方法.OSARP的功能是通过检测OSARP各组件的调整量来求得的;OSARP的成像质量是用普通检测靶加位移透镜来检测的.我们使用模拟SAR效据片来检验OSARP处理各种雷达相位历程的能力.最后用真实SAR数据片来检验SAR和OSARP的综合成像质量.用这种方法我们实地检测HG-1型OSARP,实测结果表明这种检测方法是可行的. 相似文献
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The objective of this research is to embed information in personalized stamps by modified digital halftoning techniques. The displaced and deformed halftone dots are used to encode data in the personalized stamps. Hidden information can be retrieved by either an optical decoder or digital image processing techniques.The results show that personalized stamps with value-added features like data hiding or digital watermarking can be successfully implemented. 相似文献
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介绍了彩色物体的两类主要分色方法——光学分色法和数码分色法,分析了各种方法的基本机理和特点,并对这些方法进行了对比实验。实验结果表明,传统胶卷的光学分色法有完整的理论体系和相对成熟的技术手段;而数码分色法在操作上更方便,但其理论体系与技术手段还不完善。不同的分色方法,效果不同,适用的对象也不同。通过对这些方法进行分析,并阐述各种分色法在物证检验中的作用。 相似文献
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Ozaki N 《ISA transactions》2002,41(3):303-315
This paper describes a solution for integrated plant supervision utilizing closed circuit television (CCTV) digital surveillance. Three basic requirements are first addressed as the platform of the system, with discussion on the suitable video compression. The system configuration is described in blocks. The system provides surveillance functionality: real-time monitoring, and process analysis functionality: a troubleshooting tool. This paper describes the formulation of practical performance design for determining various encoder parameters. It also introduces image processing techniques for enhancing the original CCTV digital image to lessen the burden on operators. Some screenshots are listed for the surveillance functionality. For the process analysis, an image searching filter supported by image processing techniques is explained with screenshots. Multimedia surveillance, which is the merger with process data surveillance, or the SCADA system, is also explained. 相似文献
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亚像素理论在图像边界处理中的应用研究 总被引:9,自引:2,他引:7
图像分辨力大大低于胶片是数字图像处理的一大弱点,此弱点极大地限制了数字图像处理技术在精密测量等领域的应用。亚像素软件处理技术能弥补这一缺点。介绍了常用的亚像素处理技术,以及提高角度精确度和边缘检测的方法。 相似文献