background blurring shadow 2008.10.07. outline introduction ◦ camera-dslr ◦ depth of field...

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Background Blurring Background Blurring Shadow 2008.10.07

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Introduction DSLR 3

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Page 1: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

Background BlurringBackground Blurring

Shadow2008.10.07

Page 2: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

OutlineOutlineIntroduction

◦Camera-DSLR◦Depth of field

Method◦Part I: object segmentation◦Part II: depth map◦Part III: defocus blur

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Page 3: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

IntroductionIntroductionDSLR

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Page 4: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

IntroductionIntroduction

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Page 5: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

IntroductionIntroductionDepth of fieldCircle of Confusion

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Page 6: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

System designSystem design

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Page 7: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

Depth mapDepth mapUser define

◦Vanish point

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Page 8: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

Depth mapDepth map

blur disk diameter b of a detail at distance xd from the subject

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Page 9: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

Imgb(i,j)=∑ (circle(r,x,y)i,j × wx,y × Imgo(x,y) )

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Page 10: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

Defocus blurDefocus blur

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Page 11: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

Defocus blurDefocus blur

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Page 12: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

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Page 13: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

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Page 14: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

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Page 15: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

BokehBokeh

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Page 16: Background Blurring Shadow 2008.10.07. Outline Introduction ◦ Camera-DSLR ◦ Depth of field Method ◦ Part I: object segmentation ◦ Part II: depth map ◦

Todo listTodo list1. 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

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