街景地图是全景图与二维在线地图的结合，它以实景作为辅助传统地图抽象描述的表达手段，提高地图的空间认知功能。街景地图为用户提供固定视点的360°自由漫游与全景图点间漫游。街景地图中全景图布设呈线状分布，点间距离短、漫游频繁，因此，漫游需保持一定的空间连续与空间纵深。文中对街景地图这一全景图漫游技术应用环境的特点进行分析，引入能够从单张照片恢复一定深度信息的 T IP算法，并将其运用渲染到纹理、着色器等技术，对T IP算法实现过程进行改进，在保证一定运行效率的前提下，提高街景地图的漫游效果。%Street view is a combination of panoramic image and two‐dimensional online map ,which is a specific method to express the traditional map ,and greatly improve the space perception of map .Panorama technology provides 360° free roaming and roaming between panorama points .However ,a street map of panoramic maps distributes in linearity ,the distance between two points short and roaming frequently ,so some methods which don’ t remain spatial relations will damage the street roaming effect .Therefore , analyzing the characteristics of the panorama roaming technology ,it introduces and improves TIP algorithm that can recover the depth information from a single photograph and uses the render ,texture and shader technology to improve the street map navigation effect and ensure the efficiency of certain conditions .
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