Research On Mapping Technology Of Domestic High-resolution Optical Remote Sensing Satellite Image Map

Due to the low quality of remote sensing images in China before,it is difficult to meet the requirements of remote sensing satellite image mapping,and the domestic satellite image has less radiation spectrum,which makes it difficult to fully reflect the spectral features of ground features.Therefore,most of the traditional remote sensing satellite image maps at home and abroad mainly use foreign remote sensing satellite images,and the resolution of remote sensing satellite images is generally low.With the development of China's remote sensing satellite business,the resolution of domestic satellite images has been multi-leveled from sub-meter to hundreds of meters,which provides a sufficient data basis for domestic remote sensing satellite image map mapping.The mapping technology for domestic high-resolution satellite images is gradually mature,but there are still several problems.On the one hand,the remote sensing image mapping is vast,usually involving multiple or multi-orbit satellite image mosaics,and during the acquisition process of remote sensing satellite images,due to the influence of factors such as shooting time,features of the ground and weather conditions,the quality of remote sensing images will be significantly different,resulting in uneven distribution of brightness or color within a single remote sensing satellite image or between multiple images,directly affects the subsequent processing of the image and the quality of the resulting remote sensing satellite image map,which poses a great challenge to the domestic high-resolution remote sensing image mapping technology;on the other hand,the high-resolution remote sensing satellite image map is limited In the limited area,when the image map usually expresses the macroscopic information of the features,there will be problems such as the loss of texture details and information,the unclear identification of the features,the unclear surface features and the spatial pattern of the area,and the loss of geographic features The particularity of the remote sensing image is greatly reduced in intuitiveness and legibility.(1)By analyzing the band characteristics of three high-resolution optical remote sensing satellite images of ZY-3,GF-1 and GF-2,the band-weighted synthesis method of three domestic high-resolution optical remote sensing satellite images is carried out Experimental exploration and verification to obtain a true color band synthesis method with good effect.(2)Aiming at the problem of inconsistency of color and brightness during the stitching of multiple remote sensing images during the production of domestic high-resolution remote sensing image maps,the color scale and curve tools are used to coordinate with each other,and the basic principles of color are used to adjust it to achieve It is basically the same,which lays a data foundation for the production of remote sensing image maps.(3)Aiming at the problems of unclear feature types and loss of image details and textures in domestic remote sensing image maps,taking water bodies,cities,bare land and special buildings as examples,respectively,examples are given to illustrate the processing methods of feature enhancement,so that all kinds of features are clear and beautiful on the remote sensing image map.(4)Map symbols and map annotations can assist remote sensing images to better interpret map content.Remote sensing satellite remote sensing image maps cover a wide range.In order to enable image readers to quickly obtain image map information,a set of remote sensing image map symbols and annotation standards have been designed and produced,so that the remote sensing image maps have distinct levels.