Motion from normal flow

Motion from normal flow - Motion from normal flow Optical...

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Unformatted text preview: Motion from normal flow Optical flow difficulties The aperture problem Depth discontinuities Translational Normal Flow In the case of translation each normal flow vector constrains the location of the FOE to a half-plane. Intersection of half-planes provides FOE. n u u = Z n tr Egoestimation from normal flow Idea: choose particular directions: patterns defined on the sign of normal flow along particular orientation fields positive depth constraint 2 classes of orientation fields: copoint vectors and coaxis vectors Optical flow and normal flow Optical flow and normal flow Coaxis vectors with respect to axis (A,B,C) P(Af/C, Bf/C Coaxis vectors with respect to axis (A,B,C) Coaxis vectors Translational coaxis vectors Translational coaxis vectors h passes through FOE and (Af/C, Bf/C), defined by 2 parameters Rotational coaxis vectors Rotational coaxis vectors Rotational coaxis vectors g passes through AOR and (Af/C, Bf/C), defined by 1 parameter Combine translation and rotation Positive + positive positive Negative + negative negative Positive + negative dont know (depends on structure) Coaxis pattern translational rotational combined -vectors: Translation...
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This note was uploaded on 01/13/2012 for the course CMSC 426 taught by Professor Staff during the Winter '08 term at Maryland.

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Motion from normal flow - Motion from normal flow Optical...

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