1. Background Blurring Shadow 2008.10.07

2. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦ Part III: defocus blur 2

3. Introduction DSLR 3

4. Introduction 4

5. Introduction Depth of field Circle of Confusion 5

6. System design 6

7. Depth map User define ◦ Vanish point 7

8. Depth map blur disk diameter b of a detail at distance x d from the subject 8

9. Img b (i,j)=∑ (circle(r,x,y) i,j × w x,y × Img o (x,y) ) 9

10. Defocus blur 10

11. Defocus blur 11

12. 12

13. 13

14. 14

15. Bokeh 15

16. Todo list 1. 先把 object segmentation 的功能 implement 起來，方便實驗用 2.blur kernel 的計算公式 ◦ 和 photoshopCS3 的 lens blur 區別 ◦ 物理原理 / DIP 的角度 3. 和 depth 建立絕對關係 16