Comparison of maximum likelihood classification and parallelepiped classification rules for monitoring changes of forest land cover | |
| Author | Supun Karnchanasutham |
| Call Number | AIT Thesis no. CA-84-3 |
| Subject(s) | Landsat satellites Forests and forestry |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The computer classification of LANDSAT MSS data has been done in North-east Thailand (Path 138row 50), Nakornraschasima province. Most of the study area is with in the Sakaerat Environmental Research Station (SERS)_. The data used consists of CCT's dated, Nov. 13, 1979 and Jan. o4,1982. Land cover map of SERS at scale 1:15,000 (after wacharakitti, S., 1980) and Land cover map of SERS at Scale 1:50,000 (after suwahyuono., 1983) were used to select training classes. The work was done with a supervised approach using five classes : 1) Brushland 2) Dry Dipterocarp) Forest 3)Dry evergreen Forest 4) Swidden area 5) Unclassified. The objectives of this study were to display the map of existing forest areas by using the RECOGX package with Maximum Likelihood classification based on two different dates of LANDSAT CCT MSS data and comparison of final classification results with those obtained by DIRAPSAR packager. The digital LANDSAT data for this study was geometrically corrected, using the two ground control points. The boundary of the study areas wee overplayed by using a Zoom Transfer Scope. The results of forest land cover classification of for CCT MSS data record on Nov. 13, 1979 of Dry Dipterocarp Forest, Dry Evergreen Forest, Swidden area and unclassified are 21.46, 40.65, 27.15 and 10.75% respectively. For CCT MSS data record on Jan. 04, 1982 of Dry Dipterocarp Forest, Dry Evergreen Forest, Swidden area and unclassified are 21.69, 37.43 34.83 and 6.0% respectively. To compare final classification results with those obtained by DIMAPSAR package for Dry Dipterocarp Forest and Swidden area for Nov. 13, 1979 are different. For Jan. 04, 1982 are the same. This is because a different method was used to classify and spectral values overlapped in each class. |
| Year | 1984 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Computer Application (CA) |
| Chairperson(s) | Kaew Naulchawee |
| Examination Committee(s) | Kanchit Malaivongs ; Lawrence, Fox III |
| Scholarship Donor(s) | USAID, managed by Department of Technical and Economic Cooperation (DTEC) |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1984 |