摘要工程图学作图题自动判卷系统是使用开发工具Visual Basic 6.0综合现代软件工程学的原理开发出来的。主要应用于工程图学等各类需要进行图形鉴别题型的考试。参加改卷的老师使用考试管理员分配的帐号登录考试系统，然后根据系统提示进行判卷工作。系统具有图形对比、自动判卷等功能。49108

论文首先通过对各种图形比较方法的优势和缺点进行分析比较，并结合本设计题目的自身特点，确定了采用对图形的像素对比，提取作答答案和标准答案的同一坐标像素，同时通过将提取出来的像素值进行数值比较，从而得出作答答案与标准答案的异同。其次，当发现作答答案与标准答案有不同之处时，在有差异的地方用红色填涂，使判卷人员进行阅卷时快速便捷地发现答卷的错误之处。

结果显示，所设计的系统满足工程图学作图题自动判卷的功能。

毕业论文关键词：自动判卷；图形比较；VB语言；工程图学

Abstract

Problem of engineering graphics is automatically given a volume systems using integrated development tool Visual Basic 6 development of modern software engineering principles。It’s mainly used in various types of graphical identification which is required, such as in engineering graphics examination. Teachers participating in the modified volume using the test administrator account log on examination system of distribution and sentenced according to the prompt volume.  The system has a graphical comparison, automatically awarded volume, etc. 

The paper first through carries on the analysis comparison to each kind of graph comparison method superiority and the shortcoming, and unifies this design topic own characteristic, had determined uses to the graph picture element contrast, the extraction does answers the answer and the standard answer identical coordinates picture element, simultaneously through the picture element value which withdraws carries on the value comparison, thus obtains does answers the answer and the standard answer similarities and differences. Secondly, when it finds an answer answer and answer when there are differences, there is a difference with red filling coated, liable to a volume when marking a personnel quickly and easily answer error is discovered.

Results showed that the design problem of system of engineering graphics automatically liable to a function of the volume.

Keywords: Automatically sentenced volume, Graphics comparison, VB words, Engineering graphics

目  录

第一章  绪 论 1

1.1 研究背景 1

1.2 传统工程制图作图题批改形式进行转变的必要性 2

1.3 当今计算机自动评判系统的研究现状分析 2

1.4  VISUAL BASIC 程序开发语言的优势 2

1.5  GD-VB作图题自动判卷系统的特点 3

1.6 本文的工作 4

1.7 本文的结构 4

第二章  系统的总体思路与功能模块 6

2.1 GD-VB作图题自动判卷系统的需求分析 6

2.2 GD-VB作图题自动判卷系统总体设计思路 6

第三章 GD-VB系统功能模型的建立 8

3.1 系统功能模型的建立 8

3.2 系统信息模型的建立 8

第四章 系统功能模块的详细设计