首页> 外文会议>International Symposium on Computer and Information Sciences(ISCIS 2004); 20041027-29; Kemer-Antalya(TR) >An Efficient Camera Path Computation Using Image-Space Information in Virtual Endoscopy
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An Efficient Camera Path Computation Using Image-Space Information in Virtual Endoscopy

机译:虚拟内窥镜中使用图像空间信息的高效相机路径计算

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In virtual endoscopy, fast and accurate path generation and navigation is the most important feature. Previous methods made a center line of organ cavity by connecting consecutive points maximally distant from organ wall. However they have some problems to demand a lot of computation and extra storage for spatial data structures. We propose an efficient path computation algorithm. It determines camera direction for the next frame identifying a ray that has maximum depth in current frame. Camera position is determined by using the center of gravity of organ's cross-section. Entire camera path can be constructed by applying the operation in every frame. It doesn't require preprocessing and extra storage since it depends only on image-space information generated in rendering time.
机译:在虚拟内窥镜检查中,快速准确的路径生成和导航是最重要的功能。以前的方法通过连接距器官壁最大距离的连续点来制作器官腔的中心线。但是,它们存在一些问题,需要为空间数据结构进行大量计算和额外存储。我们提出了一种有效的路径计算算法。它确定下一帧的摄像机方向,以标识当前帧中具有最大深度的光线。相机位置是通过使用器官横截面的重心来确定的。可以通过在每一帧中应用操作来构造整个摄像机路径。它不需要预处理和额外的存储,因为它仅取决于渲染时生成的图像空间信息。

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