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CMSC 427: Computer Graphics David Jacobs Today’s Class Whirlwind intro to graphics What problems does graphics deal with? Examples of leading edge work. Applications What we’ll cover Fundamental issues underlying these. Class structure and logistics

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Presentation Transcript
today s class
Today’s Class
  • Whirlwind intro to graphics
    • What problems does graphics deal with?
    • Examples of leading edge work.
    • Applications
  • What we’ll cover
    • Fundamental issues underlying these.
  • Class structure and logistics
computer graphics possible definitions
Computer Graphics: Possible Definitions
  • Using computers to create images?
  • Creating realistic images of the world
  • Also creating semi-realistic images
  • Information visualization
realistic images
Realistic Images
  • Geometry
  • Lighting/Intensities
  • Motion
  • 3D Models
  • Projection
  • Visibility
3d models scanning
3D Models - Scanning


scanned model
Scanned Model

On the left is a photograph of Michelangelo's David.

On the right is a computer rendering made from a geometric model.


3d models generated
3D models - Generated

Realistic modeling and rendering of plant ecosystems: Oliver Deussen1 Pat Hanrahan2 Bernd Lintermann3 Radom´ır Mˇech4

Matt Pharr2 Przemyslaw Prusinkiewicz4

geometry projection visibility
Geometry – Projection, Visibility

The Walkthru Project

  • Modeling Lighting
  • Reflectance
  • Texture
  • Shadows (visibility)
  • Interreflections

(from Debevec)


Source emits photons

And then some reach the eye/camera.

Photons travel in a straight line

  • When they hit an object they:
  • bounce off in a new direction
  • or are absorbed
  • (exceptions later).
skin reflectance
Skin Reflectance



(Jensen, Marschner, Levoy, Hanrahan)




Pattern Repeated



Computer Generated


(from Langer and Zucker)


Falling Water model, Bruce Walter thesis.

motion capture
Motion Capture

images based on realism
Images based on realism

(De Carlo and Santella)


Membrane Ion Channels

Picture Omitted

Nicotinic Acetylcholine Receptor in Membrane mimetic Slab

(77K atoms)

(Prof. Varshney)

modern applications slides courtesy of prof varshney
Modern Applications(slides courtesy of Prof. Varshney)
  • Computer-Aided Design/Manufacturing
  • Medicine
  • Biochemistry
  • Simulation
  • Cartography
  • Electronic publishing
  • Computer Animation / Film Production
  • Art
  • Games
computer aided design
Computer-Aided Design

Picture Omitted

Virtual Car

Images courtesy Mercedes-Benz

drug design
Drug Design

Picture Omitted

Complementarity of

Transthyretin Domains

architectural walkthroughs
Architectural Walkthroughs

Picture Omitted

Image Courtesy


medical imaging
Medical Imaging

Picture Omitted

CT Volume Rendering

Image courtesy: GE CRD Labs

Volume Rendering with Reflections

Image courtesy: Arie Kaufman, SUNY SB

computational simulations
Computational Simulations

Picture Omitted

Flow Fields for Space Shuttle Launch Vehicle

Image Courtesy: Fred Martin et al., NASA Johnson Space Center

film production
Film Production

Picture Omitted

Finding Nemo, Pixar Animation Studios

computer games
Computer Games

Picture Omitted

what we ll learn
What we’ll learn
  • Fundamental principles/math
    • Geometry
    • Reflectance modeling
  • Algorithms
  • Programming – C++, OpenGL, GLUT
  • Graphics displays and Open GL
  • Geometric Objects
  • Geometric Transformations
  • Projection
  • Display – Scan Conversion
  • Texture
  • Color and Transparency
  • Sampling and Filtering
  • Midterm
  • Midterm recap
  • Culling, Depth cues and Collisions
  • Visibility Determination
  • Illumination, Shading
  • Ray Tracing
  • Shadows
  • Global Illumination
  • Modeling
  • Interpolation and approximation
  • Rendering
  • Image-Based Rendering
  • Animation
  • Conclusions


  • Required: Computer Graphics with OpenGL, Third Edition by Donald Hearn and M. Pauline Baker ISBN 0-13-015390-7, Prentice Hall
  • Recommended: OpenGL 1.4 Programming Guide, Fourth Edition: The Official Guide to Learning OpenGL, Version 1.4 by OpenGL Architecture Review Board, Dave Shreiner, Mason Woo, Jackie Neider, Tom Davis ISBN 0-321-17348-1, Addison-Wesley You can download OpenGL 1.1 Programming Guide
course requirements
Course Requirements
  • Prerequisites
    • Linear Algebra
    • CMSC 420 (programming experience)
  • Assignments
    • Reading (Today, Chapter 1, Tuesday, Chapter 2)
    • Problem Sets (5)
      • Programming in OpenGL
      • Pencil and paper problems.
      • Challenge problems
    • Midterm, final
  • Questions: WebCT
  • Teacher–David Jacobs
    • Office hours, Tu, W 2-3
  • TA – Derek Juba
    • Office hours, M 2:30-3:30, Th 12:30-1:30
  • Assignments
    • Handing in - WebCT
    • Late policy - Homework due start of class.   Due Thursday, late penalty of 10% if 24 hours late.  30% penalty if 11am next Monday. Not accepted later. Due Tuesday, late penalty 10% for 24 hours, 20% for 48 hours, no later.