AI SearchGIS data conversion
Call Number: AIT Thesis no. CS-95-23 Material type:
TextSeries: Asian Institute of Technology. Thesis ; no. CS-95-23Publication details: Bangkok : Asian Institute of Technology, 1995Description: 47 leaves + 1 online resourceSubject(s): Online resources: Dissertation note: Thesis (M.Sc.) - Asian Institute of Technology, 1995 Summary: A number of GIS data conversion mechanisms are available to convert raster data to vector data and vice versa. Some GIS's are able to automatically convert from one format to the others while others can operate on only a specific data format. The scanline algorithm, double run-length encoding and thinning can be handle the GIS data conversion mechanisms to improve and preserve data contents. It also provide data quality and eliminate error due to repeated conversions. In the first experiment vector data is converted to raster data. Vector data are encoded in digital line graph (DLG) which consists of the topology records of node, line and area. The scanline algorithm is used next for raster coding. The second experiment raster data is converted to vector data. To improve the quality of vector data, the double run length coding, boundary thinning and tracing by double run-length codes are proposed.
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Asian Institute of Technology Library AIT Publications | AIT Thesis no. CS-95-23 (Browse shelf(Opens below)) | 1 | Available | 30050120675524 | |||||||||||||
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Asian Institute of Technology Library AIT Publications | AIT Thesis no. CS-95-23 (Browse shelf(Opens below)) | 2 | Available | 30050120675532 | |||||||||||||
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Asian Institute of Technology Library Archives | AIT Thesis no. CS-95-23 (Browse shelf(Opens below)) | Available | 30050120356182 |
A thesis submitted in partial fulfilment of the requirements for the degree of Master of Science
Thesis (M.Sc.) - Asian Institute of Technology, 1995
A number of GIS data conversion mechanisms are available to convert raster data to vector data and vice versa. Some GIS's are able to automatically convert from one format to the others while others can operate on only a specific data format. The scanline algorithm, double run-length encoding and thinning can be handle the GIS data conversion mechanisms to improve and preserve data contents. It also provide data quality and eliminate error due to repeated conversions. In the first experiment vector data is converted to raster data. Vector data are encoded in digital line graph (DLG) which consists of the topology records of node, line and area. The scanline algorithm is used next for raster coding. The second experiment raster data is converted to vector data. To improve the quality of vector data, the double run length coding, boundary thinning and tracing by double run-length codes are proposed.
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