Urban land use classification

        Urban dynamic monitoring
        The remote sensing images cover the same region at a certain period to return to an area on the planet and provide the same and multi-temporal images. By comparison and analysis, you can visually understand the development trend in the region, as urban planning, land use, government and relevant departments, to provide a scientific basis for decision making. Software written in IDL language is available for providing multi-temporal change detecting tools, you can easily extract the change information.

 

Urban dynamic monitoring

        With city digitization process around the country rapid development, high-resolution images  of air and space  provide a rich data source for the urban planning. In recent years, remote sensing images spatial resolution and spectral resolution significantly are improved, which makes the application of high resolution remote sensing images has been greatly extended. In urban planning, construction and management, urban dynamic monitoring based on high resolution remote sensing image analysis achieves remarkable results in more than 80 cities around the country. However, the analysis of remote sensing data processing complex and technically difficult, the technical requirements of high professional quality factors hindered the remote sensing image data in non-professional sector applications of remote sensing technology.
        Urban dynamic monitoring system based on geographical information platform, 3S technology integration as the core, combined with professional image analysis and information extraction software, to achieve the area of the city, street, key features of the object image acquisition and analysis, rapidly access to their spatial feature, through verification report, statistical analysis and other means to urban planning, urban management services.
        1. Resource integration
        Information resources include: Planning approval database, image database, model database, the system user database, geospatial databases, theme databases, metadata databases, libraries and other policies and regulations. The construction of urban dynamic monitoring system needs to undertake various data format conversion and Multi-source data integration. At the same time, it will provide application integration services, business integration services, data integration services to connect the relevant functional departments, to maximize the use of remote sensing data resources.
        2. Function information
        According to the characteristics of urban management application, the urban dynamic monitoring system will use the analysis of high resolution remote sensing images to various businesses, for example, Illegal land use monitoring, urban green space analysis, land use change analysis and urban land use condition analysis.   

        Using image classification method, extract the samples of image supervised classification t and establish analysis model to analyse single image.

 

 

Feature information extraction

    Through the multi-period images classification, set the type of changes classification, then analyse the differences. The final results can be converted to vector after clumping, combing, and sieving class.

 

Multi-period image compare

  

    Through the semi-manual or automatic manner, we can analysis difference polygons of two periods images and  achieve spatial features extraction from image features.

 

Image polygons recognize   

    Dynamic monitoring technology is applied to monitor the illegal use of land, urban green space analysis, land use change analysis and urban land use condition analysis.

 

Monitor illegal use of land

 

 

Green area statistic

 

 

New added area statistic

 

 

 Road area statistic

        Urban living environment monitoring and assessment
        Environmental problem is a more prominent issue in the current process of urbanization in China. Through the multi-source remote sensing monitoring platform and using professional spectral analysis function ,we can  implement dynamic monitoring of the urban environment. We can monitor and analyse environmental situation and trends on weather, water, soil, waste and other testing.
        Integration of GIS and remote sensing data analysis greatly improves the processing and analysis of the urban GIS platform ability. That changed pixel distribution, land distribution and other types of polygons results we get, can provide new technology support for urban planning, construction and management.

      The process of urban planning is the process which includes the automatic collection of information, dynamic monitoring and management and decision support services of city's infrastructure and function. The urban planning is a highly integrated body which takes advantage of modern science and technology such as remote sensing, database, geographic information system and global positioning system, internet, 3D virtual reality.
      The remote sensing technology is one of the key technologies to build urban planning. We can regard the city as a whole through satellite remote sensing technology to provide the realistic, repeated and correlative Earth's surface data. With the rapid development and wide use of remote sensing technology, people have gained massive image data in the same region which are multi-temporal, multi-scale and multi-resolution. Remote sensing technology has become an important information acquisition method in urban planning.  
      The major applications of remote sensing in urban planning include providing the city's basic geographic information data and different kinds of thematic map data, urban dynamic monitoring, urban living environment monitoring and assessment.
       IDL is the ideal software for data analysis, visualization, and cross-platform application development. IDL integrates a powerful, array-oriented language with numerous mathematical analysis and graphical display techniques, thus giving you incredible flexibility.
        IDL is widely used in earth science, medical imaging, image processing, software development, testing technology, defense engineering, and mathematical analysis and other areas.
        The urban planning process is the process which includes city's infrastructure and function of the automatic collection of information, dynamic monitoring and management and decision support services. The urban planning is use of remote sensing, database, geographic information systems and global positioning systems, internet, 3D virtual reality highly complex integration.
        The remote sensing technology is one of the key to build urban planning, through satellite remote sensing technology to provide realistic, repeatability and correlation of data in the Earth's surface, the city can be as a whole. With the rapid development of remote sensing technology and widely used, people have gained access to the same region and temporal, multi-scale, multi-resolution mass image data, as important information for urban planning tool.
        The remote sensing applications in urban planning: provide the city's basic geographic information data and theme data, urban dynamic monitoring, urban living environment monitoring and assessment.
        Provide the city's basic geographic information data and theme data.
        Based on urban geospatial information, including digital elevation model, topographic maps, digital orthophotoes and so on, these are the basic platform of the city. Obtaining and processing geospatial information is related to urban roads, railways, bridges, buildings, rivers, green spaces and many other factors. The issues involved here include huge investment, complex implement and higher technical requirements.
        Software written in IDL language is available for urban planning industry needs and common problems existing.
        The software has remote sensing image processing, commonly used raster and vector data input and output, automatic classification of urban system and change detecting, with urban system target semi-automatic extraction and can do many kinds of function expansion.   
        Providing high-resolution ortho image correction and object-oriented feature extraction can easily obtain the Orthophoto images and feature elements of the city.