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Systematic error in the determination of perimeter and area of off-lattice digitalized images

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The correct determination of the perimeter and area of 2D digital images is a crucial point for image analysis. In this short paper, we would like to report the existence of a systematic error of perimeter and area determination of raster images. This problem is caused by the sub-pixel dislocation of the original pictures during scanning/digitalizing. The effect of this error is demonstrated here on two examples: by showing how it changes the outcome of the fractal dimension measurements (using the perimeter-area relation) and how it changes the habitat-ranking of forest fragments (using the interior-to-edge ratio).

Document Type: Research Article


Affiliations: KFKI Atomic Energy Research Institute, H-1525 Budapest POB 49, Hungary

Publication date: January 1, 2007

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