shadow silhouette maps pradeep sen mike cammarano pat hanrahan stanford university
Download
Skip this Video
Download Presentation
Shadow Silhouette Maps Pradeep Sen Mike Cammarano Pat Hanrahan Stanford University

Loading in 2 Seconds...

play fullscreen
1 / 28

Shadow Silhouette Maps Pradeep Sen Mike Cammarano Pat Hanrahan Stanford University - PowerPoint PPT Presentation


  • 87 Views
  • Uploaded on

Shadow Silhouette Maps Pradeep Sen Mike Cammarano Pat Hanrahan Stanford University. Speaker: Alvin Date: 8/24/2003 SIGGRAPH 2003. Outline. Introduction Algorithm Result Artifacts Conclusion & Future Work. Introduction. Silhouette Shadow Map Shadow Volume

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Shadow Silhouette Maps Pradeep Sen Mike Cammarano Pat Hanrahan Stanford University' - svein


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
shadow silhouette maps pradeep sen mike cammarano pat hanrahan stanford university

Shadow Silhouette MapsPradeep Sen Mike Cammarano Pat HanrahanStanford University

Speaker: Alvin

Date: 8/24/2003

SIGGRAPH 2003

outline
Outline
  • Introduction
  • Algorithm
  • Result
  • Artifacts
  • Conclusion & Future Work

Shadow Silhouette Maps

introduction
Introduction
  • Silhouette
  • Shadow Map
  • Shadow Volume
  • Shadow Silhouette Map

Geometry

Silhouette

Shadow Silhouette Maps

shadow map
Shadow Map

Shadow Silhouette Maps

shadow map1
Shadow Map

Shadow Silhouette Maps

shadow volume
Shadow Volume

Shadow Silhouette Maps

shadow volume1
Shadow Volume

Shadow Silhouette Maps

shadow silhouette map
Shadow Silhouette Map
  • Shadow Map + Silhouette Information

Shadow Silhouette Maps

outline1
Outline
  • Introduction
  • Algorithm
  • Result
  • Artifacts
  • Conclusion & Future Work

Shadow Silhouette Maps

algorithm
Algorithm
  • Criteria
  • Abstract
  • Input
  • Depth Test & Shadow Configurations
  • Generating the Silhouette Map
  • Shadow Rendering

Shadow Silhouette Maps

criteria
Criteria
  • The representation must guarantee a continuous shadow boundary.
  • The information has to be easy to store in a texture.
  • There is only one silhouette point in each texel; only the last point will be stored.

Shadow Silhouette Maps

abstract
Abstract

Shadow Silhouette Maps

input
Input
  • Shadow Map
  • Silhouette Edge (Geometry Information)

Shadow Silhouette Maps

generating the silhouette map
Generating the Silhouette Map

Shadow Silhouette Maps

generating the silhouette map1
Generating the Silhouette Map

Shadow Silhouette Maps

shadow rendering
Shadow Rendering

Shadow Silhouette Maps

outline2
Outline
  • Introduction
  • Algorithm
  • Result
  • Artifacts
  • Conclusion & Future Work

Shadow Silhouette Maps

result
Result

(Left) Standard shadow map. (Center) Shadow volumes. (Right) Silhouette map.

Shadow Silhouette Maps

result1
Result

Shadow Silhouette Maps

result2
Result

Shadow Silhouette Maps

result3
Result

Shadow Silhouette Maps

result4
Result

Scene fill: The number of fragments rendered to draw the scene without shadows.

Volume fill: The number of fragments drawn when rendering the shadow volume geometry.

Silhouette fill: The number of fragments that pass through silhouette.

O: The ratio of volume fill to scene fill is the overdraw factor O.

P: The ratio of silhouette fill to scene fill is the percentage P.

Shadow Silhouette Maps

outline3
Outline
  • Introduction
  • Algorithm
  • Result
  • Artifacts
  • Conclusion & Future Work

Shadow Silhouette Maps

artifacts
Artifacts

Shadow Silhouette Maps

artifacts1
Artifacts

Shadow Silhouette Maps

outline4
Outline
  • Introduction
  • Algorithm
  • Result
  • Artifacts
  • Conclusion & Future Work

Shadow Silhouette Maps

conclusion future work
Conclusion & Future Work
  • Significantly improves the quality of shadow mapped images.
  • Simple and runs in real time.
  • Finding the better silhouette representations out.
  • Extending to soft shadow algorithms.
  • Implementing the algorithm in hardware.

Shadow Silhouette Maps

ad