结合倾斜影像的实景三维场景增强显示

Enhanced display of 3D real scenes combined with oblique images

针对实景三维场景在近地面视角或面对复杂特殊地物时存在的模型破损、纹理变形、悬浮物及细节表现精度不高等问题,本文提出了一种场景增强显示方法。利用计算纠正后的无畸变影像,查找匹配与场景呈现最相近的目标影像并将其精准叠加至三维模型上,完成二维影像与三维模型间的视觉融合和自然过渡;同时实现三维漫游过程中影像的动态调度和实时绘制,以支撑超大场景的持续增强显示。实践证明,该方法不仅可以弥补实景三维模型的显示不足,提升场景视觉浏览效果,还可以结合最新航飞影像增强场景表达的现势性,提升实景三维的推广应用价值,研究成果可有助于开展自然资源管理、国土空间规划、应急救灾、城市治理等领域工作。

Aiming at the problems of model breakage,texture deformation,suspended objects and low detail performance in 3D real scenes in near⁃ground perspective or when facing complex and special objects,this paper proposes a scene⁃enhanced display method.Using the corrected undistorted image,find the target image that matches the most similar to the scene and superimpose it on the 3D model accurately to complete the visual fusion and natural transition between the 2D image and the 3D model.And it realizes the dynamic scheduling and real⁃time rendering of images during the 3D roaming process to support the continuous enhanced display of super large scenes.Practices show that this method can not only make up for the insufficient visualization of the realistic 3D model and improve the visual browsing effect,but also can combine the latest oblique images to enhance the currency of the scene expression,thereby enhancing the promotion and application value of 3D real scene.The research results can contribute to the development of natural resources management,land and space planning,emergency disaster relief,urban governance and other fields.