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Ziyi Chang

Postdoctoral Researcher
Incoming MSCA Fellow
Inria Rennes
ziyi.chang@inria.fr


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Fellowship

GROWD: Generative Modelling of Dense Crowds under Multiscale Observations

Programme
Bienvenüe+ MSCA-COFUND Fellowship
Funder
Région Bretagne (Brittany Regional Council)
Host
VirtUs team, Inria Rennes
Role
Project Lead / Research Fellow
Period
Nov 2026 – Oct 2028 (24 months)
Total funding
€131,760
Bienvenüe+ MSCA-COFUND Fellowship funding information

Overview

GROWD is my Bienvenüe+ MSCA-COFUND Fellowship project, an independent research programme that I proposed and developed, hosted by the VirtUs team at Inria Rennes. The project develops probabilistic generative models for dense crowd dynamics by combining sparse, local, fine-grained agent-level observations with dense, global, coarse-grained video-derived measurements.

The project addresses a key limitation in current crowd modelling: existing approaches often either assume unrealistic access to complete individual trajectories or rely on coarse field-level observations that obscure local interactions. GROWD treats these two sources of information as complementary views of the same underlying crowd dynamics.

Research Direction

  • Dense crowd modelling: probabilistic, data-informed models of dense crowd dynamics.
  • Multiscale observations: integrating agent-level observations with video-derived measurements for uncertainty-aware crowd analysis.
  • Generative models: extending my previous work on multi-character interaction synthesis and generative human motion toward crowd-level behaviour.

Collaboration

I am especially interested in collaborations that connect fine-grained human motion, coarse-grained video observations, probabilistic generative modelling, and domain expertise from event organisation or urban planning for safer and more interpretable analysis of shared public spaces.

Funding

Bienvenüe+ is an international postdoctoral fellowship programme co-funded by the European Union’s Horizon Europe Marie Skłodowska-Curie Actions COFUND programme, Région Bretagne, and participating host institutions.


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