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ISSN 2083-6473
ISSN 2083-6481 (electronic version)
 

 

 

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Tomasz Neumann
 

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TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
81-345 Gdynia, POLAND
www http://www.transnav.eu
e-mail transnav@am.gdynia.pl
A Method to Build Web Raster Chart System
Q. Hu 1, L. Yu 1, J. Chen 1,2
1 Shanghai Maritime University, Shanghai, China
2 Jimei University, Xiamen, Fujian, China
ABSTRACT: Great attentions have been paying by many shipping countries to the digital chart application in the field of maritime traffic. To resolve ?Information Isolation?, numerous Web chart systems have been developed over the world. Most of them, however, are vector chart based. This paper advances a method to build web chart system with raster data. System architecture, coordinate transformation as well as the splitting and rendering of raster charts are introduced in this paper. By using the pre-rendered chart tiles, the web raster chart system can be accessed with higher speed than most vector chart based web rendering system in wide bandwidth network. The experiment also shows the rendering error of this method is small enough for many kinds of application.
REFERENCES
Guojun, P. & Tianhe, C. 2005a. Research on Sea Digital Map based on WEBGIS. IGARSS'05. Proceedings. 2005 IEEE International Volume 2, Issue , 25-29 July
Guojun, P. & Tianhe, C. 2005b. Research on WEBGIS real-time distribution system of port navigation-supporting information. IGARSS'05. Proceedings. 2005 IEEE International Volume 2, 25-29 July.
Moritz, H. 1990. The Figure of the Earth – Theoretical Geodesy and the Earth’s Interior. Herbert Wichmann Verlag Karlsruhe..
Yixing, X. & Li, H. 2003. Research on arithmetic of coordinates transformation in ECDIS ,Journal of Engineering Design, Vol. 10 No. 5 Oct.
Richardus. & Peter. 1972. Map Projections, for Geodesists, Cartographers and Geographers. North Holland Publishing Company, Amsterdam.
Qinyou, H. 1999. Application of Least Square Algorithm in Process of Digitizing Nautical Chart. JOURNAL OF SSSRI, Vol. 22 No. 2 Dec.
Citation note:
Hu Q., Yu L., Chen J.: A Method to Build Web Raster Chart System. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 1, No. 2, pp. 171-174, 2007

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