The invention discloses a mesh simplification method in three dimensional reconstruction based on
plane fitting. The method comprises the steps: firstly carrying out the point and plane extraction andplane clustering of a
point cloud, and obtaining a separated plane and a detail part
point cloud; secondly carrying out the plane
edge extraction, edge downsampling, plane
internal point removing anddownsampling, plane edge and interior combination and triangularization and triangularization plane combination, and obtaining a triangularization splicing result of separation planes; thirdly carrying out the triangularization
processing of the detail part
point cloud, and obtaining a triangularization
processing result of the details; finally combining the triangularization
processing result ofthe details with the triangularization splicing result of the separation planes, and obtaining a mesh simplification result. The method can greatly reduce the storage space of point cloud mesh data,and facilitates the real-time transmission and processing of three-dimensional data in a better way. Moreover, no error is introduced to the point cloud measurement. Meanwhile, because of the reduction of the number of points and the number of planes, the method reduces the hardware and
software requirements for the point cloud
surface display, and can achieve the more fluent and quicker display.