SPATMODEL - Spatial Constellation Models of Local Object Descriptors

Goals

The main goal of this project is to study existing and develop new methods for detecting, localising and recognising objects based on extracted local image features. The methods should integrate both the local feature information and their spatial configuration (constellation) in order to find "best hypotheses" of objects and their pose. The fundamental idea is to utilize a "constellation model! which tolerates missing evidences and is efficient in search.

This project is a sub-project of the more general project: OBJECT - Object Detection and Recognition, and the results will be utilized in the main project.

The current main objectives are:

• State-of-the-art method for finding objects based on the extracted local image features

Approaches currently under investigation:

• RANSAC based hypothesis initialisation and MCMC based object presence and pose estimation

Sub-projects

News

The first very impressive results will be demonstrated in ICCV2007 workshop on Non-rigid Registration and Tracking Through Learning!

Contact information

Alexander Drobchenko	E-mail	WWW	Post-graduate researcher
Joni Kämäräinen	E-mail	WWW	Project leader, lecturer

Download

Source code

1. -

Data sets

1. -

Links to other resources

Research groups working on constellation models
CalTech Vision Group (prof Perona)
Univ. British Columbia - Lab for Computational Intelligence (prof Lowe)
Related or otherwise useful software
Drop - Deformable Regisration using Discrete Optimisation

3D pose estimation (i.e. camera resectioning)

The Resultant and Bezout's Theorem

This can be used to solve common roots of lower order polynomials by using matrix determinant of higher order polynomials (used by at least one method published in PAMI)

Documentation

Do not hesitate to to contact authors (e-mail, etc.) in order to retrieve copies or reprints of the following publications.

1. Articles in international compilation works and in international scientific conference proceedings with referee practice
   1. Alexander Drobchenko, Jarmo Ilonen, Joni-Kristian Kämäräinen, Albert Sadovnikov, Heikki Kälviäinen, Miroslav Hamouz, Proc. of the 15th Scandinavian Conf. of Image Analysis, Object class detection using local image features and point pattern matching constellation search, (2007)
   2. Joni-Kristian Kämäräinen, Miroslav Hamouz, Josef Kittler, Pekka Paalanen, Jarmo Ilonen, Alexander Drobchenko, Proc. of the ICCV 2007 Workshop on Non-Rigid Registration and Tracking Through Learning (NRTL2007), Object Localisation Using Generative Probability Model for Spatial Constellation and Local Image Features, (2007)