“In the two reference algorithms, terrain is represented by quadrilaterals with a uniform elevation within individual cells, which results in a staircase-shaped surface. These structures translate to the computed horizon lines. In the new algorithm, terrain information is rendered by a triangle mesh, which represents a smooth continuous surface. Computed horizon lines subsequently have more natural gradients and do not suffer from staircase-shaped artefacts induced by terrain representation.”
Steger et al, 2022 Geoscientific Model Development
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