Fig. 1. Large-scale multi-stripe digital elevation model（DEM）mosaicking method

Fig. 2. Processing flow of digital elevation model（DEM）multi-stripe matching

Fig. 3. Chips partition and sliding matching

Fig. 6. Schematic diagram of digital elevation model（DEM）mosaicking strategy

Fig. 7. Collaborative execution process of CPU and GPU after performance optimization

Fig. 8. Flowchart of CPU parallel computing overlap area

Fig. 9. Tie-point matching flow chart of CPU parallel computing

Fig. 10. GPU parallel computing architecture

Fig. 11. Slope map of study area.

Fig. 12. Distribution of tie-points

Fig. 13. ICESat laser points（red）superimposed on a TanDEM-X grid image

Fig. 14. TanDEM-X grid image after block adjustment

Fig. 15. Large-scale TanDEM-X mosaicking image