(双语)计算机图形学重点.doc

1. Whats the Computer Graphics? IEEE: Computer Graphics is the art or science of producing graphical images with the aid of computer.2.液晶显示器LCD(Liquid Crystal Display)可视角度(viewing angle)：能清晰看到图像的最大角度。点距(Pixel pitch)：两个液晶颗粒（光点）之间的距离。点距一般为0.280.32mm就能取得较好的显示效果。分辨率(resolution)：液晶显示器中含有的液晶颗粒数，是真实分辨率，只有在真实分辨率下才能得到最佳的显示效果。3. The Applications of Computer GraphicsCAD/CAMScientific VisualizationComputer AnimationComputer ArtUser InterfaceNatural Scenery Simulation4. Aliasing: distortions result from mapping continuous Space to discrete approximation.三个走样现象StaircaseUneven BrightnessThe Picket Fence Problem 5. 齐次坐标（homogeneous coordinates） 所谓齐次坐标表示法就是将原本n维的向量表示成一个n+1维向量。如n维向量(P1,P2, ,Pn)表示为（hP1,hP2,LhPn,h），其中h称为哑坐标。6. Basic Characteristics of Light三个基本量Brightness，Hue，Saturation正比：Proportional 错误 反之正确 full 错误 反之正确7. What is the Region?内点：Interior Defined 边界点：Boundary Defined8. This computer task consists of two main components :modeling and rendering.9. Computer graphics,image processing,and computer vision deal with the Creation ,manipulation and interpretation of visual information ,respectively.10. The creation of visual information is also referred to as image synthesis.11. The two main components of computer graphics are modeling and rendering.12. GUI stands for graphical user interface .(图形化用户界面)13. Name four applications of computer graphics other than GUI.Presentation graphics , computer-aided design , scientific visualization, digital art and entertainment.14. OpenGL as a State Machine.15. An important structural and operational feature that characterizes the inner working of OpenGL and other graphics API is the graphics pipeline.16. Setting up OpenGL on a PC .Opengl32.lib,glu32.lib,giut32.lib.选择1.The Graphical Kernel System (GKS)-(1984) American National Institute (ANSI) and the International Standards Organization (ISO) The Programmers Hierarchical Interactive Graphics Standards (PHIGS, PHIGS+) DirectX (Microsoft)Xlib (X-Windows)OpenGL (Silicon Graphics, Inc. SGI)2.图形变换是计算机图形学基础内容之一。Homogeneous Coordinate:2D Translation MatrixHomogeneous Coordinate: 3D Translation Matrix 2D Rotation MatrixRotation with respect to an arbitrarily specified Point相对于任意指定的点旋转Translate Scale Rotate