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Evaluation of conventional digital camera scenes for Thematic Information Extraction
 H. S. Lim M. Z. MatJafri and K. Abdullah School of Physics Universiti Sains Malaysia, 11800 Penang Introduction The increasing availability of remote-sensing images, acquired periodically by satellite sensors on the same geographical area, makes it extremely interesting to develop the monitoring systems capable of automatically producing and regularly updating landcover maps of the considered site (Bruzzone, et al., 2002). Airborne remote sensing was selected in this present study because of several reasons. First was the airborne images can provides higher spatial resolution for mapping a small study area. Second was the airborne data acquisition can be carried out according to our planned surveys. It’s not like the satellite data was fixed on time of satellite overpass the study area only. Third, for airborne remote sensing, atmospheric correction was not need to apply to the analysis data because atmospheric correction only improves R2 and RMS significantly for turbidity, this is an advantage since one step of the retrieval process can be eliminated (Koponen, et al., 2002). The objective of this study is to investigate the potentiality of using digital camera imagery for land cover mapping. In this study, images captured from a digital camera were used for land cover mapping. Supervised classification methods were applied to the digital images. Many researchers used the Maximum Likelihood method in their study (Donoghue and Mironnet, 2002). The monitoring task can be accomplished by supervised classification techniques, which have proven to be effective categorization tools (Bruzzone, et al., 2002). Accuracy assessment also has been done in this study. Study Area  Source: Microsoft Corp., 2001. Figure 1. The study area Merbok River estuary was chosen as the study area in this study. The study area is located at latitude 5º 39’ N to 5º 41’ N and longitude 100o 20’ E to 100o 24’ E (Figure 1). The images were captured from a light aircraft flying at an altitude of 8000 feet on 9 March 2002.
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