Establishment of Digital Human Head Model Coordinate System Based on Mean Curvature Analysis

Abstract

The human body model scanned by a structured light scanner is based on the scan coordinate system. Since the structured light scanner is not fixed, when the scanner scanning human body in different position, we can get several models, the coordinates of the same point on these models are not the same. In order to solve this problem, we propose a method. We extract facial feature points with the use of mean curvature analysis. The feature points are used to determine the digital human head model coordinate system. We can convert the human head models from the scan coordinate system to the digital human head model coordinate system. After the conversion, the coordinates of a same point on different models are approximately the same, which can make the use of scanner more efficiency and user-friendliness.