一种用于动态场景的全景表示方法

针对全景图无法表示动态场景这一问题，提出一种用于动态场景的全景图表示方法，将视频纹理和全景图结合起来，构造动态全景图。系统首先将一系列定点拍摄的图像拼接成全景图，然后用摄像机拍摄场景中周期或随机运动的物体，提取视频纹理，最后视频纹理与全景图对准并融合，生成动态全景图。动态全景图既保持静态全景图全视角漫游的优点，又使得场景具有动态的特征，极大地增强漫游的真实感。

A Novel Panoramic Representation for Dynamic Scene

This paper presents a novel system to combine image mosaics with video texture. The system first composes a sequence of images into a final mosaic. A dominant motion estimation algorithm is used to register images, and outlier mask is detected to avoid bias. After registration, the images are warped and composed into a complete mosaic. To avoid producing blurred results by moving objects, authors employ a quad tree based construction algorithm that segments the overlapping section into small regions and samples each pixel in these regions from a single source image. Then, some periodic/random moving objects in scene are captured into video clips, and the system converts these video clips into video texture. Background Modeling and a feature based metamorphosing technology are used to improve the quality of video texture generated. At last, video texture is registered with image mosaics and both are combined into a compact representation. The system infuses image mosaics with dynamic qualities, while keeping the advantages of providing full view of scene (360 degree). For example, imagine a scene with a flag. Not only the system can be used to construct a panoramic image mosaic to look around, but also find the flag in the mosaic is flapping in breeze.