1 / 18

An Overview of Image Matting

An Overview of Image Matting. Speaker: Hao Hu Adviser: Jian-Juin Ding. Bullet Time. Outline. Bullet Time Traditional Approach of Matting Bayesian Image Matting See You Around. Bullet Time. The Matrix. Bullet Time Rig. Green Screen Room 120 cameras. Bullet Time.

sitara
Download Presentation

An Overview of Image Matting

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. An Overview of Image Matting Speaker: Hao Hu Adviser: Jian-JuinDing

  2. Bullet Time

  3. Outline • Bullet Time • Traditional Approach of Matting • Bayesian Image Matting • See You Around

  4. Bullet Time • TheMatrix

  5. Bullet Time Rig • Green Screen Room • 120 cameras

  6. Bullet Time

  7. Traditional Approach of Matting : Color Difference Method • Based on RGB color model ifB>Gthen B=G α=B – max(G,R)

  8. Traditional Approach of Matting : Color Difference Method • C = αF + (1- α)B • C:Composition F:ForegroundB:Background Origin F α C α=B – max(G,R)

  9. Examples

  10. Problems for Blue Screen Matting • Back ground color usually not perfect.

  11. Problems for Color Difference Method

  12. Bayesian Image Matting

  13. Bayesian Image Matting

  14. Bayesian Image Matting

  15. Bayesian Image Matting

  16. See You Around

  17. Thank you

  18. Reference • http://www.csie.ntu.edu.tw/~cyy/courses/vfx/13spring/news/ • http://www.youtube.com/watch?v=Rg5dNOPJf-I • http://www.youtube.com/watch?v=bKEcElcTUMk • http://research.microsoft.com/apps/pubs/default.aspx?id=73833

More Related