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Establishing a global algorithm for water quality mapping from multi-dates images 
where the coefficient ej, j = 0, 1, 2, … can also be solve empirically. Data Analysis And Result Seven sets of the colour images were selected for calibration analysis. Figure 2 shows the images that were used in this study. 
 Figure 2. Images of the study ares: (a) the oblique image of the Prai River estuary captured on 28 October 2001 from altitude of 3,000ft, (b) the oblique image of the Muda River estuary captured on 20 January 2002 from altitude of 8,000ft, (c) the vertical image of the Prai River estuary captured on 9 March 2002 from altitude of 8,000ft. (d) the vertical image of the Muda River estuary captured on 9 March 2002 from altitude of 8,000ft, (e) the oblique image of the Merbok River estuary captured on 5 May 2002 from altitude of 8,000ft, (f) the vertical image of the Merbok River estuary captured on 26 October 2002 from altitude of 8,000ft and (g) the vertical image of the Merbok River estuary captured on 22 March 2003 from altitude of 8,000ft. |