A microcomputer program for hydropathic analysis of proteins with I/O through word processing and graphics software

A BASIC program has been devised for the hydropathic analysis of protein sequences according to the method of Kyte and Doolittle (1982). The program uses sequence data from input files that are created with a word processor and produces two types of output file: one contains a bar graph of the hydropathic profile in a format that can be easily edited; the other is a tabulation of hydropathic indices along a protein's sequence that can be used as input by the program for the production of a bar graph or as input into other graphics and analysis software. An MS-DOS microcomputer, operating under IBM BASICA or GWBASIC and a dot matrix printer with block graphics capabilities are the only hardware requirements for graphic display of hydropathy profiles. The program is capable of unattended analysis from a list of up to 15 input files.     

Word Processing with On-Line Script Recognition

Adding a graphics tablet, a stylus, and special software to a personal computer system enables its users to edit text with simple, handwritten commands.     

Photoshop抠图方法及技巧分析

Photoshop是当前最流行的图形图像处理软件,集图像设计、合成以及文字输入、编辑为一体,功能强大。熟练掌握抠图技巧是Photoshop学习的一道难关及根本环节。     

Radiation therapy treatment planning using concurrent programming

Concurrent programming can be applied to the problem of computer graphic simulation of radiation treatment of tumors (radiation treatment planning). Running several tasks or programs simultaneously on behalf of a single user provides a big improvement over the traditional sequential approach, in which editing a treatment plan and computing and displaying dose distributions are separate operations which must be invoked by explicit commands. With our system, the user sees isodose contours being updated automatically and continuously as the plan is edited; this greatly facilitates plan optimization. The complexity of parallel processing has resulted in a 'conventional wisdom' which discourages this technique. The usual approach is to have parallel processes share a common global data structure, which makes interaction hard to control and discourages modularity and data abstraction. We have developed an alternative approach based on message streams which instead enhances modularity and data abstraction while still providing the advantages of parallel processing. The system is very reliable and is used routinely in a practical clinical environment.     

基于神经网络的手写体汉字识别实验系统

基于神经网络的手写体汉字识别是将汉字点阵图形转换成电信号,然后输入给数字信号处理器或计算机进行 处理,依据一定的分类算法在众多汉字字符中找出和它相互匹配的汉字字符。本文阐述了手写体汉字识别实验系统的设计目 标,分析了手写体汉字的预处理及其原理,详细介绍了手写汉字的特征提取。     

论提高《Photoshop平面设计》课程教学效果的方法

Photoshop是最为出名的图像处理软件之一,集图像扫描、编辑修改、图像制作、广告创意,图像输入与输出于一体的图形图像处理软件,深受广大平面设计人员和电脑美术爱好者的喜爱。因此,高等院校开设《Photoshop平面设计》课程是时代的需要,是教育服务于社会的需要。笔者就如何提高《Photoshop平面设计》课程的教学效果,作为教师在课堂教学中应该发挥怎样的作用,才能培养出适应新时期的高素质人才做出了阐述。     

UNDO, An Aid for Explorative Learning?

New users of an application system,especially computer novices,can become confused and frustrated after experiencing the first,perhaps not recoverable error situations during the early stages of exploration and learning.System facilities,which let users UNO and REDO executed commands,are suggested to be and aid for active learning and can be used as a method for systematic exploration through recovering from unknown and newly explored (perhapw wrong)system states by cancelling executed commands with UNDO.An explorative learning experiment on a commercial graphics editor with a modified user interface revealed reasons.why one-step recall UNDO does not guarantee successful explorative learning of a comples connitive skill such as graphics editing on computer.     

Computer graphics input methods for building energy analysis

An interactive computer graphics system for the determination of the thermal loads of residential structures is presented. This Graphic Load Analysis System, GLAS, consists of the graphical input routines, a weather simulation model, a dynamic thermal-analysis program and automated graphic output routines, all linked by a common database. The paper describes in detail the graphical input routines required to describe a building's thermal envelope.     

微计算机控制的多画面交互式彩色图形系统

本文阐述一个低成本、应用灵活的交互式彩色图形系统.它包含一个用于画面前后台显 示处理的多画面存贮管理部件,具有彩色图形、字符、伪彩色图象和动画四种显示模式.系统 的交互功能(例如图象/图形的输入,修改与画面编辑等)由系统软件和一个易于扩充的图形命 令语言定义,因此可望该系统能在多方面获得应用.     

矢量图形编辑系统的数据模型及其实现

以电力行业为实际应用背景，本文提出了一组基于SVG的矢量图形编辑系统的数据模型，主要包括类结构、图元描述模型和SVG解析模型；同时，以该模型为基础设计和实现了一个独立于具体应用的矢量图形编辑系统，讨论了该系统的设计思想和体系结构，并对各部分功能进行了分析。     

手势与手写文档中文本行的提取

手写文档的非结构化,导致对手写文档的编辑很困难。文本行是手写文档中一个显著的结构,它的可靠提取对于更高级别结构化文档（图形与文字分离,段结构的提取,文字的提取）及编辑文档非常重要。目前关于手写文档的结构化,分为联机和脱机两种。使用联机算法提取文本行,然后讨论文本行的提取对手势设计的影响。     

图形编辑及图形在文档和电子邮件中的插入方法

在Windows之下的WORD或其它文本编辑软件中进行文稿编辑时,经常遇到插入图形图象的问题,甚至在电子邮件Email中编辑发送函件也同样有这种可能。介绍文档及电子邮件中图形图片的编辑、插入等处理方法,简单实用。     

Program design of STL machine graphics realistic system

This topic is based on Auto CAD graphic input environment.It takes the STL format graphic files as the data exchange interface to do the research of STL interactive 3D realistic graphics displaying content.Through the analysis of the STL file format,in VC++6.0 programming environment,class if stream in the standard IO library was used for object class definition.And get line functions in the string class were called to read and bind STL file line by line.In data processing module,draw triangles in Open GL programming technology was applied to realize the visual display of the STL graphics,with the corresponding 3D entity data generated.Open GL graphics processing technologies were applied to display 3D graphics from STL files input or realistic program module,which contain the graphic transformation,light,materials,et al.Test reports were shared based on the test of the application system.Finally the program design of STL graphics realistic display system was completed based on research work,which has certain theoretical and practical significance in the aspect of engineering application.     

BASIC语言控制下计算机的图象输入和输出

本文概述了一个在BASIC语言控制下,DJS-130计算机图象输入和输出实验处理系 统.文中阐述了电视图象信号经A/D变换头和数据通道接口电路进入计算机的硬件结构;简 述了通过程序传送方式向电视图形显示器输出信号的方法,以及控制图象入/出的BASIC语 句的设计.     

基于图形对象的一致性维护问题的研究

针对实时协同图形编辑系统中一致性维护关键问题,提出了一种基于图形对象的并发控制算法。该算法扩展了面向文本编辑的分布式操作转换dOPT算法,满足图形对象属性级上数据一致性维护,同时通过预定义图形对象间的关联关系和位置属性约束规则,进行操作语义维护管理,使得实时协同图形编辑系统的一致性维护更为有效和完备。     

人工神经网络在三维X线头影测量系统中的应用

给出一种三维X线头影测量中图形图像重建的方法;南正侧位两张X线头影片上72个标志点。可以重建出颅颌骨三维透视图;利用人工神经网络LMBP算法。以病人颅颌骨72个标志点的三维坐标集合在某一平面的二维投影为理想输出,以人体颅颌骨标本72个同名标志点在相同平面的二维坐标集合为训练样本,在训练结束后即可建立两者之问的近似线性关系;由于网络具有泛化能力,因此可用该网络对颅颌骨标本上每一像素进行变换。结果表明变换后72个标志点坐标和病人很好吻合,变换图像为病人近似的颅颌骨图像;即满足口腔正畸诊断要求又获得较好图像视觉效果。     

基于反走样技术的计算机视频信息泄漏的软防护

TEMPEST技术是当今计算机信息安全的重要研究方向。该文在图形生成和处理过程中,采用反走样技术设计生成TEM-PEST图形,并提出生成TEMPEST视频图形的基本图元生成及图形平滑处理算法,编制TEMPEST图形包;利用二维离散傅里叶变换在频域内对由SOFTTEMPEST图形包生成的视频图形的防护效果进行分析和实测,为进一步应用奠定理论基础。     

Visual terminals and user interfaces

The evolution of computer and communication technologies enables man-to-machine interfaces through graphics. This paper describes the state of the art in visual terminals such as telewriting, facsimile and videotex in Japan. User interfaces through visual terminals facilitate the input and the understanding of information, and thus stimulate wider dissemination of computers and non-voice communication, even to the private sector.     

基于SVG的矢量图形编辑系统的数据描述模型

SVG是W3C组织制定的一套基于XML的可扩展矢量图形语言描述规范，可以用来描述矢量图形、图像、文本等图形对象。为了在Web上显示图形并对图元进行操作，提出了一个支持SVG的矢量图形编辑系统的数据模型。该模型采用面向对象的方法来描述，主要包括类结构、图元描述模型和SVG解析模型。实践证明，根据这个模型能够设计出高效率的独立于具体应用的图形编辑系统，为生成SVG图形文件提供一个可视化环境。