摘要
提出一个快速绘制的ＩＢＲ新方法，它用分层深度全景图（ＬＤＰ）作为三维模型的中间表示，通过ＬＤＰ的重投影变换快速生成新的视图．ＬＤＰ可以看作物体的一个全景视图，但在每个视线方向有多个不同深度的象素．当用ｎ 个平面投影图像建立ＬＤＰ时，它的数据量不是取决于采样图像的数量，而是取决于物体表面的复杂性．由于ＬＤＰ可以看作一个独立的图像坐标框架，ＭｃＭｉｌｌａｎ 的顺次扫描重投影算法能够用于ＬＤＰ中，避免了Ｚ－缓冲或深度比较过程．
An efficient image based rendering method is presented that synthesizes new views in interactive rate. It uses an intermediate data structure called layered depth panorama (LDP) as a compact representation of the object's surface. LDP can be recognized as a panorama like representation, but with multiple pixels along each line of sight. When n sample images are preprocessed to construct a LDP, its size is determined by the complexity of the surface, and is independent of n . As LDP is a single view, McMillan's occlusion compatible ordering algorithm is adapted. It can also be extended to sphere panorama.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2000年第1期43-47,共5页
Journal of Computer-Aided Design & Computer Graphics
基金
国家"八六三"项目!(863-512-27-04)
关键词
全景图
深度图像
图像变形
图形绘制
image based rendering, panorama, depth image, image warping
