基于保持内容的变形算法的虚拟展示系统

The Virtual Display System for the Deformation Algorithm Basing on Content-preserving

采用基于图像渲染的算法实现了三维虚拟展示系统.该系统可以从不同角度,以不同放缩比例交互式浏览真实物体.首先基于SfM算法来重建原始摄像机轨迹和稀疏的三维点云,并拟合摄像机轨迹为三维平面圆.在两连续视点之间使用对极变换算法,将特征点集投射到新视图,最后使用基于保持内容的变形算法生成新视图图像.两视点都能生成对应的新视点图像,连续两个视点可以生成内部新视点的两幅新视图.最后新视图和原始视图合成视频.该系统通过操作视频实现放缩和旋转的交互式浏览方式,优点在于不需要对物体做三维重建,仅基于图片的方式来展示物体.和基于三维重建的三维展示系统不同的是,该系统基于图像渲染,运算量小,交互方式简洁、更真实.

A three-dimensional virtual display system is implemented by the algorithm basing on image rendering.The system can interactively browse real objects from different angles with different zoom ratios.Firstly,the original camera trajectory and the sparse 3D point cloud are reconstructed based on the SfM algorithm,and the camera trajectory is fitted to the 3D plane circle.Antipode deformation algorithm is used between two continuous viewpoints,and the minutiae set is projected on to new images,finally new images are generated with the deformation algorithm basing on content-preserving.Two viewpoints can generate the corresponding new viewpoint images,two consecutive viewpoints can generate two new images of internal new viewpoints.Finally,the new and the original images are composited to be video.The system realizes the interactive browsing method of zooming and rotation by operating videos.The advantage of the system is that it does not need to do three-dimensional reconstruction of objects,only shows the objects with pictures.The system is different from the three-dimensional display system based on 3D reconstruction.The system is based on image rendering,the computation is small,the interaction method is simple and more realistic.