本章的主要目的对VTK系统进行概括性的介绍，并且提供了一些基本的信息，让用户能用各种开发语言（C++、TCL、Java、Python）创建应用程序，在本章开始的时候，主要介绍VTK系统的基本概念和对象模型，在本章的最后，用一些示例程序说明如何用VTK构建应用系统。(The main purpose of this chapter is the overview of the introduction of the VTK system, and provide some basic information, so that users can use various development languages (C++, TCL, Java, Python) to create the application, at the beginning of this chapter, mainly introduces the basic concept of VTK system and the object model, at the end of this chapter with some examples, explains how to construct the application system with VTK.)