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392113 Einführung in die Computergrafik (V) (WiSe 2019/2020)

Inhalt, Kommentar

With this lecture we give an introduction to theoretical and practical foundations of Computer Graphics. Our main topic is to visualize (or render) a 3D scene as seen from a certain virtual camera position. However, to achieve this goal we first have to understand and master several sub-problems, where we can make use of knowledge and techniques from several other disciplines (physics, art, biology, mathematics, computer science): How does light propagate through a scene after it gets emitted from a light source? How does light interact with objects of different materials? How does a camera or the human visual system work? How does stereoscopic rendering work? What is light, what is color? How do we represent 3D models and scenes?

The lecture consists of four main parts:

  • We will start with Global Illumination, which answers the above questions allows us to render photo-realistic images (e.g. for movies). Using some math, efficient algoriths, and clever data structures leads to methods that render nice images in minutes (instead of hours or days).
  • Interactive frame rates can be achieved by so-called rasterization pipelines, which simplify the light transport and perform all computations in a parallelized and pipelined manner on the graphics card (GPU). We will implement a real-time rendering system using OpenGL.
  • After understanding the process of rendering, we focus on its input, which is a geometric description of a scene. We will see several representations for geometric objects that each have their own advantages and drawbacks. Besides triangle meshes, we will discuss implicit surfaces (used for constructive solid geometry, CSG) and freeform curves and surfaces (used in Computer Aided Design, CAD).
  • We will briefly discuss character animation and rendering, where we focus on simple (hence efficient) linear blend skinning for skeletal animation and linear blend shapes for face animation.

Most of the techniques you only really understand if you try to use them, i.e., if you implement them. Our exercises therefore consist of three mini-projects (global illumincation, real-time OpenGL renderering, geometric modeling) of about 4 weeks each. The programming exercises are now mandatory. You do not have to hand in code, but you will have to present your solution of the programming exercises to the TA during the exercises classes.

Teilnahmevoraussetzungen, notwendige Vorkenntnisse

  • Basic knowledge of linear algebra and analysis is required. You really should have passed your Mathe 1+2 courses.
  • The programming exercises will be done in C++. We'll have a C++ crash course at the beginning.


  • Foley, van Dam, Feiner, Hughes: Computer Graphics: Principles and Practice, Addison-Wesley, 1996.
  • Glassner: An Introduction to Ray Tracing, Academic Press, 1989
  • Pharr, Humphreys: Physically Based Rendering, Morgan Kaufmann, 2004
  • Shreiner, Seller, Kessenich, Licea-Kane: OpenGL Programming Guide, 8th edition, Addison-Wesley, 2013.
  • Seller, Wright, Haemel: OpenGL SuperBible: Comprehensive Tutorial and Reference, 6th edition, Addison-Wesley, 2013
  • Rost, Licea-Kane, Ginsburg, Kessenich: OpenGL Shading Language, 3. Edition, Addison-Wesley, 2009
  • Munshi, Ginsburg, Shreiner: OpenGL ES 2.0 Programming Guide, Addison-Wesley, 2008
  • Farin: Curves and Surfaces for CAGD. A Practical Guide, Morgan Kaufmann, 2001

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