EVENTS: INRIA Work Review

Nov 18th, 2002. Madrid.

Two Input Frames

Problems: Objects on Different Planes

Problem: Current Minimum Resolution is Triangle

Separate Objects on Different Planes

Approach

• Separate images into Background and Foreground objects

• Extension to Dynamic Scenes?

Scenario: Dynamic Scenes

• Fixed or static background

• Moving objects (i.e. players)

Scenario: Camera Motion

• What can be done with moving camera (rotations, zoom and focus changes)

12 xx H~ )(H R,Zf

Segmenting Player

Initial foreground

HH

Segmenting Player

Initial foreground

--

Segmenting Player

•Initial Foreground

•Corresponding Background

Segmenting Player

1 ... k ... N

statistics

Background

Advantages

• Segmentation of foreground objects

• Arbitrary foreground resolution can be handled

• Background model generated

Open Problems

• Different planes on background are still not segmented

• Real time?

Extension to Multiple Views

• Background interpolation need to be done only once

• Only foreground objects need to be interpolated

Synchronization of Stereo-Data

• Player Tracker – Modified Mean Shift

• Track positions are used to recovered 3D trajectories of players

• Novel curve registration framework

• Automatic

Conclusions

• Automatic Segmentation of foreground Objects

• Background model generation

• Synchronization of Stereo Data

Publications

• From Video Sequence to Motion Panorama, IEEE Workshop on Visual Motion, Dec 5-6, Florida, USA.

• Indexing Key Positions between Multiple Videos, IEEE Workshop on Visual Motion, Dec 5-6, Florida, USA.