Research on Path-planning Combining the Salient Features of Landmarks and Photography Composition Techniques

In virtual roaming, traditional path planning algorithms only pursue short spatial distances and generate paths that are not really of interest to the visitor. In order for visitors to enjoy more pleasing scenery, the roaming paths need to be improved. In this paper, we first analyse the saliency characteristics of landmarks, and then combine the central composition and trilateration composition in photography to obtain a viewpoint quality field, while adding the Bezier interpolation method to obtain a local path with the landmark as the centre to guide the local camera movement. Finally, an improved Astar pathfinding algorithm is used to connect these local paths in an orderly and non-intersecting manner to obtain a global path with a beautiful landscape and a short path. The experiments show that the path obtained by this method is short in distance but high in scenic value and natural in transition, which is highly practical and applicable.