| Author | Songlak Piriyapairoje |
| Call Number | AIT Thesis no. CS-95-23 |
| Subject(s) | Geographic information systems
|
| Note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Science |
| Publisher | Asian Institute of Technology |
| Abstract | 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. |
| Year | 1995 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Computer Science (CS) |
| Chairperson(s) | Yulu, Qi;Murai, Shunji; |
| Examination Committee(s) | Huynh, Ngoc Phien; |
| Scholarship Donor(s) | Rajamangala Institute of Technology; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1995 |