Recombination algorithm of cultural relics fragments based on feature of small plane region
In the process of reorganization and restoration of non-thin-walled cultural relic fragments,the splicing error is large due to the wear of the edge or fracture surface of the fragments.A splicing al-gorithm of cultural relic fragments based on the feature of facet region is proposed.First,the 3D point cloud of the fragment was divided into many facets according to the region growth segmentation to es-tablish the feature regions with the facets as splicing.The initial similar facet region pairs were found according to the feature description,and then geometric constraints + random sampling consistency(RANSAC)constraint strategy method were flexibly applied to eliminate mismatches;finally,the 4PCS(4-Points Congruent Sets)algorithm is used to align the fragments roughly,and then the accu-rate splicing of the fragments is achieved according to the iterative closest point algorithm(ICP).The experimental results show that the feature description of the facet is simple and has strong robustness.The two-level constraint strategy method can better solve the mismatch problem,improve the success rate of wear debris splicing,and effectively reduce the penetration phenomenon.
non-thin-walled debrissmall plane regioncharacter descriptionrandom sampling consis-tencyiterative closest point algorithm
NETL
NSTL
万方数据
维普
