Digital image stabilization - Computer Graphics Laboratory

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Focal stack DoF extensions • Capture N <strong>image</strong>s focused at different distances • For each output pixel, choose the sharpest <strong>image</strong> –e.g. look at local variance, gradient. Tuesday, February 23, 2010 From Agarwala et al.
Focal stack Tuesday, February 23, 2010
Page 1 and 2: Tuesday, February 23, 2010 Image al
Page 3 and 4: DENOISING Tuesday, February 23, 201
Page 5 and 6: Single frame Tuesday, February 23,
Page 7: EXTENDED DEPTH of FIELD Tuesday, Fe
Page 11 and 12: Focal stack Tuesday, February 23, 2
Page 23 and 24: Macro montage • 55 images here Tu
Page 25 and 26: Focal stack & plenoptic cameraStanf
Page 27 and 28: References • http://www.janrik.ne
Page 29 and 30: Interactive Digital Photomontage
Page 31 and 32: Family portrait challenge Tuesday,
Page 33 and 34: Family portrait challenge Tuesday,
Page 35 and 36: Digital photomontage Tuesday, Febru
Page 37 and 38: Tourist removal Tuesday, February 2
Page 43 and 44: Wire removal Tuesday, February 23,
Page 53 and 54: Image alignment goals ✦ Multiple-
Page 55 and 56: Approaches: model or not ✦ Model
Page 57 and 58: Brute force: dense & model-based
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Optical flow: dense, non-parametr.
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1D brightness constancy ✦ Goal: E
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Same in 2D ✦ If It is the time de
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Aperture problem Tuesday, February
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Small motion problem ✦ The first
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Coarse-to-fine optical flow image H
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Coarse-to-fine optical flow image H
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Coarse-to-fine optical flow image J
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Coarse-to-fine optical flow image J
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Image alignment: translation Tuesda
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Other application: retiming ✦ Gen
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Good features to track ✦ Idea: so
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Condition for solvability Tuesday,
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Edge Tuesday, February 23, 2010 - l
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High textured region Tuesday, Febru
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Recap ✦ Brute force : dense, mode
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MODEL FITTING Tuesday, February 23,
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Fitting a model ✦ e.g. affine: x
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VIEWFINDER ALIGNMENT Tuesday, Febru
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Idea: 1D matches of gradient ✦ Co
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Application: denoising Pulli / View
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Video stabilization : 3 steps ✦ E
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Content-Preserving Warps ✦ Liu et
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Solving for warp ✦ Grid over imag
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Results Tuesday, February 23, 2010
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Video Tuesday, February 23, 2010
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Video matching ✦ Sand and Teller
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Match move ✦ For compositing with
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Live action ✦ Note orange balls t
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Miniature construction Tuesday, Feb
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5 degrees of freedom camera robot T
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RE- PHOTOGRAPHY Tuesday, February 2
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s found in Step 2 and estimates cam
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Bae et al. Tuesday, February 23, 20
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Video stabilization ✦ http://www.
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Tracking ✦ http://citeseerx.ist.p
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Digital image stabilization - Computer Graphics Laboratory

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