基于图象的交互绘制和数据压缩  

Image Based Interactive Visualization and Data Compression

作　　者：李新肖[1] 郑南宁[1] 张汀 

机构地区：[1]西安交通大学人工智能与机器人研究所

出　　处：《中国图象图形学报（A辑）》1999年第4期280-284,共5页Journal of Image and Graphics

摘　　要：体数据的绘制速度是交互可视化的瓶颈。将基于图象的绘制方法和传统的体绘制方法相结合，提出了一个新的基于图象的快速图形图象绘制系统，大大提高了体数据交互可视化的速度。该方法首先用传统的体绘制方法得到一列采样图象，然后根据图象间象素的冗余性，通过Ｗａｒｐｉｎｇ变换压缩数据，由压缩后的数据Ｗａｒｐｉｎｇ生成任意视点的视图。为了进一步提高计算速度，给出了递推Ｗａｒｐｉｎｇ变换计算流程。The speed of volume rendering is the bottleneck of interactive visualization. In the paper, an original fast rendering system using image based rendering is presented, which greatly improves the speed of interactive visualization by combining the image based rendering and previous volume rendering. At first, a list of sample images is generated by ray tracing. Next these images are compressed by warping transformation. At last, random new view images can be rendered in speed of faster than 50 frames per second. In order to improve the speed more, a fast warping formula is developed

关 键 词：基于图象绘制 图象压缩 重投影 交互绘制 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]