Semi-automated crater depth measurements.

ABSTRACT: Impact cratering is a major process driving planetary landscape evolution. Statistics of craters spatial density is extensively used to date planetary surfaces. Their degradation state and morphometry are also key parameters to understand surface processes. To exploit the increasing coverage of digital terrain models (DEM) on Mars at high spatial resolution, we propose a semi-automated pipeline for crater depth measurement based on coupled optical images and DEM. From a craters map shapefile coupled with a co-registered DEM, we propose to measure crater depth as the difference between the 60^th percentile of elevation values on the edge of the crater and the 3^rd percentile value of the elevations within the crater. We present here this method and its calibration. •Asid

SUBMITTER: Breton S 

PROVIDER: S-EPMC6812331 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature