由CT片重建肝脏彩色三维图形

本文介绍肝脏ＣＴ片的彩色三维重建以及相应肝脏体积和表面积计算的一种方法。方法涉及ＣＴ片中肝脏组织分割、数据压缩、数据组织方式、图形变换、消隐和明暗处理。最后列出一个病人肝脏的三维显示图像以及体积计算值。

3D Color Reconstruction of the Liver from CT Slices

This paper presents a method for 3D coior display and computation of the volume and surface area of the liver from CT slices. The method deals with the segmentation f data reduction and representation, and rendering. Threshold and texture feature are used for the segmentation of various organization. Each organization is indicated by one color. A simplied two-pass filling algorithm are used for it. Date structure is organized by three files which include the segment, the line, the slice and other relative information. Every voxel is easy to visit from the files. Front-to-back method which is based on the spatial presortedness property and dynamic linked list structure are used for representation and rendering. The paper also present a proved look up table method to minimize the time of the computation. The 3D image rendering result and the volume parameters of a patient's liver are presented at the end of the paper.