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Introduction to Computer Graphics - Hanyang University

This course at Hanyang University, taught by Jong-Il Park, provides a comprehensive introduction to the principles and practices of computer graphics. Prerequisites include strong programming skills in C or C++, knowledge of basic data structures, geometry, and linear algebra. Students will engage in interactive 3D projects, culminating in a term project of their own design. The course utilizes Edward Angel's textbook and covers fundamental concepts in graphics hardware and software development. Explore the evolution of computer graphics from the 1950s to the present.

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Introduction to Computer Graphics - Hanyang University

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  1. Computer Graphics- Introduction - Hanyang University Jong-Il Park

  2. Prerequisites • Good programming skills in C (or C++) • Basic Data Structures • Linked lists • Arrays • Geometry • Simple Linear Algebra

  3. Requirements • Assigned Projects • Simple • Interactive • 3D • Term Project • You create your own! • See the course web site for assignments and projects

  4. Textbook and References • Edward Angel, Interactive Computer Graphics, A Top-down Approach with OpenGL, 5th ed., Addison-Wesley • These lectures cover Chapters 1-6 in detail and survey Chapters 7-12 • References: • F.S.Hill, Jr., Computer Graphics Using OpenGL, Prentice-Hall • OpenGL: A Primer, Ed Angel, Addison-Wesley, (Third Edition), 2008 • G.C. Burdea and P. Coiffet, Virtual Reality Technology, Wiley-Interscience. • Selected papers in Proceedings of Siggraph.

  5. Computer Graphics • Computer graphics deals with all aspects of creating images with a computer • Hardware • Software • Applications

  6. Example • Where did this image come from? • What hardware/software did we need to produce it?

  7. Preliminary Answer • Application: The object is an artist’s rendition of the sun for an animation to be shown in a domed environment (planetarium) • Software: Maya for modeling and rendering but Maya is built on top of OpenGL • Hardware: PC with graphics card for modeling and rendering

  8. Basic Graphics System Output device Input devices Image formed in FB

  9. Computer Graphics: 1950-1960 • Computer graphics goes back to the earliest days of computing • Strip charts • Pen plotters • Simple displays using A/D converters to go from computer to calligraphic CRT • Cost of refresh for CRT too high • Computers slow, expensive, unreliable

  10. Computer Graphics: 1960-1970 • Wireframe graphics • Draw only lines • Sketchpad • Display Processors wireframe representation of sun object

  11. Sketchpad • Ivan Sutherland’s PhD thesis at MIT • Recognized the potential of man-machine interaction • Loop • Display something • User moves light pen • Computer generates new display • Sutherland also created many of the now common algorithms for computer graphics

  12. Display Processor • Rather than have the host computer try to refresh display use a special purpose computer called a display processor (DPU) • Graphics stored in display list (display file) on display processor • Host compiles display list and sends to DPU

  13. Computer Graphics: 1970-1980 • Raster Graphics • Beginning of graphics standards • IFIPS • GKS: European effort • Becomes ISO 2D standard • Core: North American effort • 3D but fails to become ISO standard • Workstations and PCs

  14. Raster Graphics • Image produced as an array (the raster) of picture elements (pixels) in the frame buffer

  15. Raster Graphics • Allows us to go from lines and wire frame images to filled polygons

  16. PCs and Workstations • Although we no longer make the distinction between workstations and PCs, historically they evolved from different roots • Early workstations characterized by • Networked connection: client-server model • High-level of interactivity • Early PCs included frame buffer as part of user memory • Easy to change contents and create images

  17. Computer Graphics: 1980-1990 Realism comes to computer graphics smooth shading environment mapping bump mapping

  18. Computer Graphics: 1980-1990 • Special purpose hardware • Silicon Graphics geometry engine • VLSI implementation of graphics pipeline • Industry-based standards • PHIGS • RenderMan • Networked graphics: X Window System • Human-Computer Interface (HCI)

  19. Computer Graphics: 1990-2000 • OpenGL API • Completely computer-generated feature-length movies (Toy Story) are successful • New hardware capabilities • Texture mapping • Blending • Accumulation, stencil buffers • Convergence of computer graphics and vision • Image-based modeling/rendering

  20. Computer Graphics: 2000- • Photorealism • Graphics cards for PCs dominate market • Nvidia, ATI • Game boxes and game players determine direction of market • Computer graphics routine in movie industry: Maya, Lightwave • Programmable pipelines • GPU everywhere

  21. Homework #1 • Essay • Why do I take this course? • Include a brief description on • the best CG shot you have ever seen • the final level you want to reach after this class [Due: 8 Sept.]

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