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optical processing
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  光学处理
    584 scenes of Landsat MSS images acquired in 1970's are chosen for compilation in consideration of the national conditions and applied requirement. Reasonable cartographic design, multiple optical processing techniques and the soft-mosaicking cartographic technique are used.
    从我国国情和应用需要出发,选用70年代陆地卫星MSS影像584景,采用合理的制图设计与多种光学处理及软镶嵌制图技术,编制成1:100万中国假彩色卫星影像图。
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  optical processing
Coherent optical processing of grating records creates moiré fringe pattern.
      
For variations of the transmission ratio of only 10 percent from the ideal case of 50 percent, the interference patterns produced by optical processing no longer correspond to multiplied moiré-fringe patterns.
      
Simple optical processing of moiré-grating photographs
      
Coherent optical processing of signals represented in binary code
      
Highly directive parallel reception of radio radiation by conformal antenna lattices with coherent-optical processing
      
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In order to suit the wide, large guantative and continiously increasing needs of 1: 50,000 survey and mapping of special topics, we use th optical-computer composite processing techniques such as digital interpolation and magnifying, and optimization of band combination, the techniques of making 1:50, 000 high quality TM image have been explored. This article introduces the main steps and key techniques of making 1: 50, 000 TM image, i.e. (1) magnifying TM CCT data by real times (2.28) using interpolation method;...

In order to suit the wide, large guantative and continiously increasing needs of 1: 50,000 survey and mapping of special topics, we use th optical-computer composite processing techniques such as digital interpolation and magnifying, and optimization of band combination, the techniques of making 1:50, 000 high quality TM image have been explored. This article introduces the main steps and key techniques of making 1: 50, 000 TM image, i.e. (1) magnifying TM CCT data by real times (2.28) using interpolation method; (2) obtaining 1: 250,000 TM latent image through 50 um light-spot scanning on C-4500 Scanner; (3) creating 1:50,000 TM image by optical processing The test studies in Nanpi County, Hebei Province; Mulin County, Heilongjiang Province; Laizhou Bay, Shandong Province have achieved good results.

为了适应面广量大且需求仍在不断增长的1:5万专题调查制图的需要,我们采用数字插值放大、优化波段组合的光机复合处理技术,探索了1:5万高质量TM影像图的制作技术。本文介绍了制作1:5万高质量TM影像图的基本工艺方案及技术关键:(1)对TM图像磁带数据进行实数倍(2.28倍)双向线性插值放大,(2)在C-4500扫描仪上用50μm光点扫描获得比例尺为1:25万的潜影图像,(3)把潜影图像经显影、定影处理,再光学放大5倍,获得1:5万TM影像图。从我们结合有关任务先后在河北省南皮县、黑龙江省穆稜县和山东省莱洲湾等地区进行的试验研究看,均取得了良好效果。

584 scenes of Landsat MSS images acquired in 1970's are chosen for compilation in consideration of the national conditions and applied requirement. Reasonable cartographic design, multiple optical processing techniques and the soft-mosaicking cartographic technique are used. Then, the false-colour Landsat image map of China is compiled on the scale of 1:1,000,000. which is concordance in colour and excellent in macro-apperance. It lively shows the general geographic features of China, and has extensive...

584 scenes of Landsat MSS images acquired in 1970's are chosen for compilation in consideration of the national conditions and applied requirement. Reasonable cartographic design, multiple optical processing techniques and the soft-mosaicking cartographic technique are used. Then, the false-colour Landsat image map of China is compiled on the scale of 1:1,000,000. which is concordance in colour and excellent in macro-apperance. It lively shows the general geographic features of China, and has extensive applicability and academic value.

从我国国情和应用需要出发,选用70年代陆地卫星MSS影像584景,采用合理的制图设计与多种光学处理及软镶嵌制图技术,编制成1:100万中国假彩色卫星影像图。该影像图色彩协调一致,宏观效果良好,它生动形象地反映我国自然地理概貌,具有广泛的应用和学术价值。

In recent yrars, We were engaged in the dynamic remote sensing monitoring of the projects in the sea areas of Macao and Modaomen. In this work, a problem rose: how to extract the remote sensing image information about underwater objects and structures. As well known, in the fields of resources environment remote sensing, water environment remote sensing is more complicated than land resources remote sensing mainly due to the small range of brightness of the water image pixel and the image is of low density with...

In recent yrars, We were engaged in the dynamic remote sensing monitoring of the projects in the sea areas of Macao and Modaomen. In this work, a problem rose: how to extract the remote sensing image information about underwater objects and structures. As well known, in the fields of resources environment remote sensing, water environment remote sensing is more complicated than land resources remote sensing mainly due to the small range of brightness of the water image pixel and the image is of low density with low pirel brightness. Therefore, the purpose of ocean image process ing is emphasizing and identifying the imforma-tion of underwater objects from water. It is even more technically difficult to extract the remote sensing information of offshore projects, which in pratice needs comprehensive multib-ranch knowledge. In this paper, an inf ormatio n extraction method combining, computer processing and optical processing with remarkable effectiveness is described. For an esample, according to the practical requirement of the projects in the sea areas of Macao and Modamen, successful verification of model flow pattern is provided by means of remote sensing image information. Dydamic image information about the barriers for the reclamaion project in the sea area of Modaomen is provided as well. Fruitful social and economic profit is achieved.

本文介绍了计算机处理和光学处理相结合的信息提取方法并得到显著效益。根据澳门海域和磨刀门海域工程建设中的实际需要,成功地运用遥感影像信息为澳门海域工程物理模型试验提供了模型水流流态与原型水流流态相似性的验证,为磨刀门海域围垦工程提供了水下潜坝的动态影像信息,并取得了较好的社会效益和经济效益。

 
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