Interactive Computer Graphics: A Top-Down Approach Using OpenGL (4th Edition)

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1 ECE/CS 433 Introduction to Computer Graphics Pradeep Sen Advanced Graphics Lab Class 25 November 15, 2007 ECE/CS 433 Introduction to Computer Graphics Pradeep Sen Class 25– November 15, 2007 Announcements Email me to schedule a time if you haven’t already done so Design of a high-resolution plenoptic camera Friday, November 16, 2007 ECE 118 at noon Viktor Chekh Advanced Graphics Lab ECE/CS 433 Introduction to Computer Graphics Pradeep Sen Class 25– November 15, 2007 Last time Shadows ECE/CS 433 Introduction to Computer Graphics Pradeep Sen Class 25– November 15, 2007 Today More on hard and soft shadows General graphics effects ECE/CS 433 Introduction to Computer Graphics Pradeep Sen Class 25– November 15, 2007 Perspective shadow maps Developed by Stamminger and Drettakis (SIGGRAPH 2002) Observation: one source of artifacts is the differences in perspective projection between the light source and viewer Combat these artifacts by transforming the objects by the eye’s perspective projection before computing the shadow map
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