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Efficient Depression Filling in DEMs by Javier Garcia is a document available to read on EtoBox.

This document summarizes a research article that presents a new, more efficient method for identifying and filling surface depressions in digital elevation models (DEMs). The conventional method for preprocessing DEMs by removing depressions is computationally intensive and inadequate for high-resolution DEMs. The new method uses the concepts of "spill elevation" and "least-cost search" to simultaneously determine flow paths and watershed partitions in one processing pass. It has a time complexity of O(Nlog

Author

Javier Garcia

Language

EN