Comparison of object-based and pixel based infrared airborne image classification methods using DEM thematic layer
Keywords:
Infrared image classification, pixel-based, object-based, DEM thematic layer, land cover mapping.Abstract
An airborne infrared image was used to produce a map of land cover types in the Eastern shore of Lake Huron,
Ontario province of Canada. Maximum likelihood pixel-based and nearest neighbor object-based methods were used
in this approach. Land cover classes that obtained traditional pixel-based classification approaches showed a saltand-
pepper effect having the lowest producer accuracy (59.5%). Overall classification results increased up to 80% in
object- based approach but still failed to distinguish buildings and creeks. Contours and DEM thematic layers
enhanced classification results to a higher level (94%) and increased the producer accuracy for buildings and creek
by creating reasonable objects in segmentation process in the object-based approach.
