Foundations of Computer Graphics (Spring 2010) CS 184, Lecture 1: Overview and History Ravi Ramamoorthi

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Foundations of Computer Graphics (Spring 2010) CS 184, Lecture 1: Overview and History Ravi Ramamoorthi

Goals  Systems: Write complex 3D graphics programs (real-time in OpenGL, offline raytracer, animation)  Theory: Mathematical aspects and algorithms underlying modern 3D graphics systems  This course is not about the specifics of 3D graphics programs and APIs like Maya, Alias, DirectX but about the concepts underlying them.

Demo: Surreal and Crazy World (HW 3)

Course Outline  3D Graphics Pipeline Modeling AnimationRendering

Course Outline  3D Graphics Pipeline Unit 1: Transformations Resizing and placing objects in the world. Creating perspective images. Weeks 1 and 2 Ass 1 due Feb 11 (Demo)Demo Modeling AnimationRendering

Course Outline  3D Graphics Pipeline Unit 1: Transformations Weeks 1,2. Ass 1 due Feb 11 Unit 2: Spline Curves Modeling geometric objects Weeks 3,4 Ass 2 due Feb 25 (Demo)Demo Modeling AnimationRendering

Course Outline  3D Graphics Pipeline Unit 1: Transformations Weeks 1,2. Ass 1 due Feb 11 Unit 2: Spline Curves Weeks 3,4. Ass 2 due Feb 25 Unit 3: OpenGL Weeks 5-7. Ass 3 due Mar 18 Modeling AnimationRendering

Course Outline  3D Graphics Pipeline Unit 1: Transformations Weeks 1,2. Ass 1 due Feb 11 Unit 2: Spline Curves Weeks 3,4. Ass 2 due Feb 25 Unit 3: OpenGL Weeks 5-7. Ass 3 due Mar 18 Modeling AnimationRendering Unit 4: Animation Week 8. Ass 4 due Apr 8

Course Outline  3D Graphics Pipeline Unit 1: Transformations Weeks 1,2. Ass 1 due Feb 11 Unit 2: Spline Curves Weeks 3,4. Ass 2 due Feb 25 Unit 3: OpenGL Weeks 5-7. Ass 3 due Mar 18 Modeling AnimationRendering Unit 4: Animation Week 8. Ass 4 due Apr 8 Unit 5: Shading, Ray Tracing Weeks Ass 5 due Apr 29

Image Synthesis Examples

Logistics  Website has most of the information (look at it)  Office hours: before or after class (or send me )  TA: Fu-Chung Huang, Daniel Ritchie, Rm 545, 537?  Course bulletin board,  Textbook: Fundamentals of Computer Graphics by Shirley (3 rd edition), OpenGL Programming Guide 6 th or 7 th ed by Shreiner, Woo, …  Many optional textbooks of interest on reserve  Website for late, collaboration policy, etc  Questions?

Workload  Lots of fun, rewarding but may involve significant work  5 programming projects; latter three are time-consuming (but you have 3 weeks, groups of two, intermediate milestones). START EARLY !!  Course will involve understanding of mathematical, geometrical concepts taught (tested on midterm, final)  Prerequisites: Solid C/C++/Java programming background. Linear algebra (review on Mon) and general math skills  Should be a difficult, but fun and rewarding course

To Do  Look at website  Various policies etc. for course. Send if confused.  Skim assignments if you want. First two are ready  Rest will be up soon  Submission instructions for assignments 1,2 soon  Assignment 0, Due Jan 28 Thu (see website). Set up your account and tell us about yourself, providing a digital photo (so we can put names to faces).  Any questions?

History  Brief history of significant developments in field  Couple of animated shorts for fun  Towards end of course: movie, history of CG

What is Computer Graphics?  Anything to do with visual representations on a computer  Includes much of 2D graphics we take for granted  And 3D graphics modeling and rendering (focus of course)  Computer animation (both 2D and 3D)  Auxiliary problems: Display devices, physics and math for computational problems The term Computer Graphics was coined by William Fetter of Boeing in 1960 First graphic system in mid 1950s USAF SAGE radar data (developed MIT)

2D Graphics Many of the standard operations you’re used to :  Text  Graphical User Interfaces (Windows, MacOS,..)  Image processing and paint programs (Photoshop, …)  Drawing and presentation (Powerpoint, …)

How far we’ve come: TEXT Manchester Mark I Display

From Text to GUIs  Invented at PARC circa Used in the Apple Macintosh, and now prevalent everywhere. Xerox Star Windows 1.0

Drawing: Sketchpad (1963)  Sketchpad (Sutherland, MIT 1963)  First interactive graphics system (VIDEO)VIDEO  Many of concepts for drawing in current systems  Pop up menus  Constraint-based drawing  Hierarchical Modeling

 SuperPaint system: Richard Shoup, Alvy Ray Smith (PARC, )  Nowadays, image processing programs like Photoshop can draw, paint, edit, etc. Paint Systems

 Digitally alter images, crop, scale, composite  Add or remove objects  Sports broadcasts for TV (combine 2D and 3D processing) Image Processing

3D Graphics  3D Graphics Pipeline Modeling AnimationRendering

Applications  Entertainment (Movies), Art  Design (CAD)  Video games  Education, simulators, augmented reality  Image processing and photography

Modeling  Spline curves, surfaces: 70 s – 80 s  Utah teapot: Famous 3D model  More recently: Triangle meshes often acquired from real objects

Rendering: 1960s (visibility)  Roberts (1963), Appel (1967) - hidden-line algorithms  Warnock (1969), Watkins (1970) - hidden-surface  Sutherland (1974) - visibility = sorting Images from FvDFH, Pixar’s Shutterbug Slide ideas for history of Rendering courtesy Marc Levoy

1970s - raster graphics  Gouraud (1971) - diffuse lighting, Phong (1974) - specular lighting  Blinn (1974) - curved surfaces, texture  Catmull (1974) - Z-buffer hidden-surface algorithm Rendering: 1970s (lighting)

Rendering (1980s, 90s: Global Illumination) early 1980s - global illumination  Whitted (1980) - ray tracing  Goral, Torrance et al. (1984) radiosity  Kajiya (1986) - the rendering equation

History of Computer Animation History of Computer Animation  10 min clip from video on history of animation  Covers sketchpad, animation, basic modeling, rendering  A synopsis of what this course is about

Related courses  CS 283 (taught as 294), graduate class taught for first time in the fall this year  Many CS 294 and similar courses, e.g. visualization, physical simulation, geometric modeling, …  Other related courses: Computer Vision, Robotics, User Interfaces Computational Geometry, Photography, …

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