Event
- Title:
- Consistent Partial Matching of Shape Collections via Sparse
- When:
- 02.03.2017
- Where:
- USI Lugano Campus - Lugano
- Category:
- ICS Events
Showcase
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Consistent Partial Matching of Shape Collections via Sparse Modeling
Speaker: Luca Cosmo, University of Venice, Italy
Date: Thursday, March 2, 2017
Place: USI Lugano Campus, room SI-003, informatics building (Via G. Buffi 13)
Time: 15:30
Abstract:
Recent efforts in the area of joint object matching approach the problem by taking as input a set of pairwise maps, which are then jointly optimized across the whole collection so that certain accuracy and consistency criteria are satisfied. One natural requirement is cycle-consistency – namely the fact that map composition should give the same result regardless of the path taken in the shape collection. In this talk, we introduce a novel approach to obtain consistent matches without requiring initial pairwise solutions to be given as input. We do so by optimizing a joint measure of metric distortion directly over the space of cycle-consistent maps; in order to allow for partially similar and extra-class shapes, we formulate the problem as a series of quadratic programs with sparsity-inducing constraints, making our technique a natural candidate for analyzing collections with a large presence of outliers. The particular form of the problem allows us to leverage results and tools from the field of evolutionary game theory. This enables a highly efficient optimization procedure which assures accurate and provably consistent solutions in a matter of minutes in collections with hundreds of shapes.
Biography:
Dr. Luca Cosmo received his PhD in Computer Science from Ca' Foscari University of Venice in February 2016 where he currently holds a PostDoc position. His research interests spread among different aspects of Computer Vision and Pattern Recognition. During his Phd he mainly focused on the problem of camera calibration and three-dimensional acquisition. In 2015 he spent a period at TU Munich under the supervision of Prof. Daniel Cremers, where he started working on the problem of Shape Analysis. Since 2014 he is collaborating with a Computer Vision spin-off, DigitalViews S.r.l, in some industrial projects concerning the in-line quality control of silkscreen printings and conditioned air pipes. He is co-founder of DigitalMetrix S.r.l, a company operating in the field of three-dimensional acquisition for quality control purposes.
Host:
Prof. Michael Bronstein
Venue
- Venue:
- USI Lugano Campus
- Street:
- Via G. Buffi 13
- ZIP:
- 6900
- City:
- Lugano
Venue Description
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