Sustainable Database of Transportation Road Network Digital Atlas
To enhance the share and use of Transportation Road Network Digital Atlas, the Institute of Transportation (IOT) published the “New Century Taiwan National Transportation Road Network Digital Atlas 1.0” in the end of 2001. The atlas contain road nodes, landmarks, railways, mass rapid transmits, administration area boundaries, rivers, lakes, bridges and tunnels. After that, the Transportation Road Network Digital Atlas 1.0 had been updated to version 1.x continuously during 2003 to 2006. By the end of 2006, Transportation Road Network Digital Atlas was published with digital maps in scale of 1/5000 by referring the photo base maps provided by Ministry of the Interior and the other reliable map sources. Further, the related layers for Kinmen and Mazu are also added.
From the viewpoint of sustainable operation, the Institute of Transportation, Ministry of Transportation and Communications is scheduled to continue to use the Transportation Road Network Digital Atlas which was accomplished in 2009 as the foundation to partially
The Sustainable Database of Transportation Road Network Digital Atlas adopts SuperGIS Image Server as the sharing platform for managing and publishing aerial ortho images and satellite images
modify the transportation road network map according to the change of roads provided by the management units and the comparison of all kinds of reliable map sources, such as the urban address location data, terrain maps, photo base maps, aerial photography, the satellite images and etc. Besides, the highly-demanded attribute data was expanded so that the Transportation Road Network Digital Atlas meets the present state and needs.
The goal for this project is to establish a powerful sharing platform which can effectively store, manage and publish the huge image data. The sharing platform can not only reduce the resource waste of the image storage space repeatedly constructed by the public or private units but also assist the staff who maintains the files in quickly searching and accessing the required aerial photography. The working efficiency can be improved.
The Sustainable Database of Transportation Road Network Digital Atlas adopts SuperGIS Image Server as the sharing platform for managing and publishing aerial ortho images and satellite images over Taiwan. SuperGIS Image Server 3 is a set of enterprise class huge image server software for managing, processing and publishing image. It allows users to quickly access the huge image data in the form of file and the huge image data in server end can be reused. Therefore, SuperGIS Image Server can effectively maximize the value of the images and significantly reduces the cost of purchase.
SuperGIS Desktop can be used as a front-end platform of SuperGIS Image Server to edit files. The staff who maintains the files can quickly access the images stored in the server end through SuperGIS Desktop and then refers the images to edit the transportation road network digital map. In the next, they can edit the transportation road network digital map with the powerful editing capability of SuperGIS Desktop.
The Sustainable Database of Transportation Road Network Digital Atlas, adopting SuperGIS Image Server, is a platform for storing, managing and publishing the images. Cooperated with SuperGIS Desktop as the front-end platform for editing files, it allows the staff to maintain and edit the files with more efficiency. The problem of spending huge cost on saving the identical image of many copies can also be solved effectively.
SuperGIS Image Server provides a data convertor tool which allows the staff who maintains the files to decrease the file size of aerial photography from 2TB to 300GB, which effectively decreases the file size and still maintains the image quality.
In the past, editors had to store the needed aerial photos in a standalone computer and utilized the computer to open the photos while sketching. However, it took around 5-7 seconds to open an image; if editors wanted to open several images at a time, it took much more time. It even does not include the time for confirming coordinates and extents and for searching the correct files. In addition, the time-consuming way to deal with aerial photos may decrease the computer performance and worsen working efficiency.
The project applies SuperGIS Image Server, which enables users to rapidly access and save huge quantities of image data as files. Therefore, the image data can be accessed via cache without the need of being reloaded, which effectively accelerates the speed of managing and publishing images. So if the users use the services provided by SuperGIS Image Server, the aerial photography of Taiwan is simply a layer. After overlapping the related image layers, the staff only needs to check the check box and the required image data can be obtained in seconds(around 2 seconds under the Intranet environment), which greatly reduces the time on searching image and waiting. The process of file maintenance is also smoother.