4,037 research outputs found
LCrowdV: Generating Labeled Videos for Simulation-based Crowd Behavior Learning
We present a novel procedural framework to generate an arbitrary number of
labeled crowd videos (LCrowdV). The resulting crowd video datasets are used to
design accurate algorithms or training models for crowded scene understanding.
Our overall approach is composed of two components: a procedural simulation
framework for generating crowd movements and behaviors, and a procedural
rendering framework to generate different videos or images. Each video or image
is automatically labeled based on the environment, number of pedestrians,
density, behavior, flow, lighting conditions, viewpoint, noise, etc.
Furthermore, we can increase the realism by combining synthetically-generated
behaviors with real-world background videos. We demonstrate the benefits of
LCrowdV over prior lableled crowd datasets by improving the accuracy of
pedestrian detection and crowd behavior classification algorithms. LCrowdV
would be released on the WWW
A large-scale real-life crowd steering experiment via arrow-like stimuli
We introduce "Moving Light": an unprecedented real-life crowd steering
experiment that involved about 140.000 participants among the visitors of the
Glow 2017 Light Festival (Eindhoven, NL). Moving Light targets one outstanding
question of paramount societal and technological importance: "can we seamlessly
and systematically influence routing decisions in pedestrian crowds?"
Establishing effective crowd steering methods is extremely relevant in the
context of crowd management, e.g. when it comes to keeping floor usage within
safety limits (e.g. during public events with high attendance) or at designated
comfort levels (e.g. in leisure areas). In the Moving Light setup, visitors
walking in a corridor face a choice between two symmetric exits defined by a
large central obstacle. Stimuli, such as arrows, alternate at random and
perturb the symmetry of the environment to bias choices. While visitors move in
the experiment, they are tracked with high space and time resolution, such that
the efficiency of each stimulus at steering individual routing decisions can be
accurately evaluated a posteriori. In this contribution, we first describe the
measurement concept in the Moving Light experiment and then we investigate
quantitatively the steering capability of arrow indications.Comment: 8 page
Survey of detection techniques, mathematical models and simulation software in pedestrian dynamics
The study of pedestrian dynamics has become in the latest years an increasing field of research. A relevant number of technicians
have been looking for improving technologies able to detect walking people in various conditions. Several researchers have
dedicated their works to model walking dynamics and general laws. Many studiers have developed interesting software to simulate
pedestrian behavior in all sorts of situations and environments. Nevertheless, till nowadays, no research has been carried out to
analyze all the three over-mentioned aspects. The remarked lack in literature of a complete research, pointing out the fundamental
features of pedestrian detection techniques, pedestrian modelling and simulation and their tight relationships, motivates the draft
of this paper.
Aim of the paper is, first, to provide a schematic summary of each topic. Secondly, a more detailed description of the subjects is
displayed, pointing out the advantages and disadvantages of each detection technology, the working logic of each model, outlining
the inputs and the provided outputs, and the main features of the simulation software. Finally, the obtained results are summarized
and discussed, in order to outline the correlation among the three explained themes
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