Robustifying Descriptor Instability using Fisher Vectors

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Robustifying Descriptor Instability using Fisher Vectors

Ivo EvertsData Driver

IEEE Transactions on Image Processing, 2014Ivo Everts & Jan van Gemert & Thomas Mensink & Theo Gevers

Introduction

Koen van de Sande & Theo Gevers, University of Amsterdam at the Visual Concept Detection and Annotation Tasks

Introduction

Introduction

x1

x2

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Outline

Descriptor instabilityquantified modeled applied

Outline

Descriptor instabilityquantified modeled applied

Descriptor instability quantified

Descriptor instability

—————————— Descriptor norm ——————————

Descriptor instability quantified

Descriptor instability

—————————— Descriptor norm ——————————

Descriptor instability quantified

Descriptor instability

—————————— Descriptor norm ——————————

Descriptor instability quantified

Descriptor instability

—————————— Descriptor norm ——————————

Descriptor instability quantified

Descriptor instability

—————————— Descriptor norm ——————————

Descriptor instability quantified

Descriptor instability

—————————— Descriptor norm ——————————

Descriptor instability quantified

Descriptor instability

—————————— Descriptor norm ——————————

Descriptor instability quantified

Outline

Descriptor instabilityquantified modeled applied

Descriptor instability modeledThe data model:

Descriptor instability modeledThe data model:

The old:

Descriptor instability modeledThe data model:

The old: The new:

Descriptor instability modeledThe data model:

The old: The new:<

Descriptor instability modeled

The Fisher Vectors:

Descriptor instability modeled

D x K

D x K

2 x 5

2 x 5

The Fisher Vectors:

Outline

Descriptor instabilityquantified modeled applied

Descriptor instability applied

Descriptor instability applied

Descriptor instability applied

Descriptor instability applied

Descriptor instability applied

Conclusion

Descriptor instabilitySolid modelling as observational variance

Physical phenomenon / engineering artefact

Steady but marginal improvements on various problems

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Ivo EvertsData Driver [email protected]