23,586 research outputs found
CANU-ReID: A Conditional Adversarial Network for Unsupervised person Re-IDentification
Unsupervised person re-ID is the task of identifying people on a target data
set for which the ID labels are unavailable during training. In this paper, we
propose to unify two trends in unsupervised person re-ID: clustering &
fine-tuning and adversarial learning. On one side, clustering groups training
images into pseudo-ID labels, and uses them to fine-tune the feature extractor.
On the other side, adversarial learning is used, inspired by domain adaptation,
to match distributions from different domains. Since target data is distributed
across different camera viewpoints, we propose to model each camera as an
independent domain, and aim to learn domain-independent features.
Straightforward adversarial learning yields negative transfer, we thus
introduce a conditioning vector to mitigate this undesirable effect. In our
framework, the centroid of the cluster to which the visual sample belongs is
used as conditioning vector of our conditional adversarial network, where the
vector is permutation invariant (clusters ordering does not matter) and its
size is independent of the number of clusters. To our knowledge, we are the
first to propose the use of conditional adversarial networks for unsupervised
person re-ID. We evaluate the proposed architecture on top of two
state-of-the-art clustering-based unsupervised person re-identification (re-ID)
methods on four different experimental settings with three different data sets
and set the new state-of-the-art performance on all four of them. Our code and
model will be made publicly available at
https://team.inria.fr/perception/canu-reid/
Who am I talking with? A face memory for social robots
In order to provide personalized services and to
develop human-like interaction capabilities robots need to rec-
ognize their human partner. Face recognition has been studied
in the past decade exhaustively in the context of security systems
and with significant progress on huge datasets. However, these
capabilities are not in focus when it comes to social interaction
situations. Humans are able to remember people seen for a
short moment in time and apply this knowledge directly in
their engagement in conversation. In order to equip a robot with
capabilities to recall human interlocutors and to provide user-
aware services, we adopt human-human interaction schemes to
propose a face memory on the basis of active appearance models
integrated with the active memory architecture. This paper
presents the concept of the interactive face memory, the applied
recognition algorithms, and their embedding into the robotâs
system architecture. Performance measures are discussed for
general face databases as well as scenario-specific datasets
Towards a Principled Integration of Multi-Camera Re-Identification and Tracking through Optimal Bayes Filters
With the rise of end-to-end learning through deep learning, person detectors
and re-identification (ReID) models have recently become very strong.
Multi-camera multi-target (MCMT) tracking has not fully gone through this
transformation yet. We intend to take another step in this direction by
presenting a theoretically principled way of integrating ReID with tracking
formulated as an optimal Bayes filter. This conveniently side-steps the need
for data-association and opens up a direct path from full images to the core of
the tracker. While the results are still sub-par, we believe that this new,
tight integration opens many interesting research opportunities and leads the
way towards full end-to-end tracking from raw pixels.Comment: First two authors have equal contribution. This is initial work into
a new direction, not a benchmark-beating method. v2 only adds
acknowledgements and fixes a typo in e-mai
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