optic flow from dynamic anchor point attributes a feasibility study bart janssen
Post on 22-Dec-2015
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![Page 1: Optic flow from dynamic anchor point attributes a feasibility study Bart Janssen](https://reader036.vdocument.in/reader036/viewer/2022062516/56649d795503460f94a5c82a/html5/thumbnails/1.jpg)
Optic flow from dynamic anchor point attributes
a feasibility study
Bart Janssen
![Page 2: Optic flow from dynamic anchor point attributes a feasibility study Bart Janssen](https://reader036.vdocument.in/reader036/viewer/2022062516/56649d795503460f94a5c82a/html5/thumbnails/2.jpg)
Optic Flow• Medical Image Registration
• Video Processing / Coding
• Robotics
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The notion of scale:Objects live at different scales
Solution?Look at all scales
simultaniously
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Scale Space in Human Vision
• The human visual system is a multi-scale sampling device
• The retina contains receptive fields; groups of receptors assembled in such a way that they form a set of apertures of widely varying size.
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Gaussian Scale SpaceScale
x
y
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The Aperture problem:Constant brightness assumption is insufficient
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The Aperture problem:Constant brightness assumption is insufficient
Solution?Use points were the apperture problem is
non-existent
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Proposed Method
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Outline
• Introduction• Anchor Points• Stationary Reconstruction• Flow Reconstruction
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Anchor pointsSingular Points of a
Gaussian scale space image
Fold catastrophe
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Static PropertiesDifferential structure at the location of a Singular Point by innerproduct of theimage with derivatives of the Gaussian
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Dynamic Properties
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Outline
• Introduction• Anchor Points• Stationary Reconstruction• Flow Reconstruction
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Stationary reconstruction
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Stationary reconstruction
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Optic flow reconstruction
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Conclusions
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Differential Structure
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Error Measure