Abstract: The extraction of craters of different sizes on the lunar surface is of great value. Currently, crater detection algorithmsare effective for craters less than one kilometer, but the detection rate of largercraters needs to be improved. We propose an automatic crater detection model with good robustness.Firstly, we generate the terrain parameters based on the who lelunar DEM published by LOLA, then detect craters by object-oriented multilevel sesgmentation combined with machine learning.Three typical regions are selected for experiment and analysis, the recall and accuracy rates for craters between 1~120 km in diameter are 86.5% and 81.2% respectively, with a good detection rate.

Key words: impact crater, automatic detection, object-orientation, multilevel segmentation

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