Fig. 1. Flowchart of triangular mesh splicing

Fig. 2. bdf standard format

Fig. 3. bdf format file after conversion

Fig. 4. Detection results of adjacent boundary of triangular mesh. (a) Simple triangular mesh display results; (b) adjacent boundary detection of triangular mesh

Fig. 5. Principle of adjacent boundary splicing. (a) Before splicing; (b) after splicing

Fig. 6. Connection results generated by triangular mesh. (a) Generated results; (b) spliced results

Fig. 7. Comparison before and after point cloud classification. (a) Original point cloud before classification; (b) point cloud after classification

Fig. 8. Triangular mesh renderings with different resolutions. (a) Before the classification; (b) after the classification

Fig. 9. Comparison of mosaic boundary extraction effect of triangular mesh. (a) Before extracting; (b) after extracting

Fig. 10. Contrast diagram of triangular mesh boundary splicing and fusion effect. (a) Before boundary splicing; (b) after boundary splicing

Fig. 11. Triangular mesh renderings before and after peak smoothing. (a) Before peak smoothing; (b) after peak smoothing

Fig. 12. Comparison between mosaic fusion results after smoothing and original point cloud. (a) Original point cloud; (b) mesh model processed by the method in this paper

Fig. 13. Comparison of splicing results by mesh splicing method and software. (a) Automatic splicing effect of the method in this paper; (b) splicing effect of Geomagic Studio software