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Due to the rapid development of science and technology, automatic terrain recognition is becom- ing more and more important. Mare and highland are two main lunar terrain units. Quick and accurate identifi- cation for mare and highland is important basis for various lunar researches. This paper provides an improved algorithm, that is, gushing and immersion algorithm based on DEM and CCD image, which can better determine the mare and the highland. Two typical areas of lunar terrain, SI and Crisium had been chosen to do the research. The testing results shown that the improved algorithm can effectively recognize the mare and the highland. The overall recognition of the algorithm is satisfied and it is better than previous algorithms. KEYWORD: Lunar terrain auto recognition, Gushing and immersion, DEM and CCD image.

A Lunar Terrain Auto Recognition Algorithm by Gushing and Immersion