Estimation of Landcover Ratios in Mixel IFOVs

Abstract

The precise edge locator to estimate landcover proportion in a mixel IFOV, of which algorithm is based on moment preserving principle, is tested in this research.
Results of two computer experiments are as follows.
1) The estimated landcover proportions were affected by the length of edges, noises, window sizes of the locators and PSFs of image.
2) The average magnitude of errors of estimated landcover proportion in a mixel IFOV on an idealistic edge is less than 2% in any window size but the window size of 3×3. But, the magnitude of errors on a long and high contrasted straight edges on a digitized aerophotograph with much noise is around 20% or so.
3) Some of improvements on the present algorithm to estimate landcover proportion in mixels on realistic images are necessary.