Aggelina Chatziagapi — accepted AI-conference papers

2025

AV-Flow: Transforming Text to Audio-Visual Human-like Interactions

Aggelina Chatziagapi, Louis-Philippe Morency, Hongyu Gong, Michael Zollhöfer, Dimitris Samaras, Alexander Richard

ICCV 2025poster

We introduce AV-Flow, an audio-visual generative model that animates photo-realistic 4D talking avatars given only text input. In contrast to prior work that assumes an existing speech signal, we synthesize speech and vision jointly. We demonstrate human-like speech synthesis, synchronized lip motio…

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2025

Low-Rank Head Avatar Personalization with Registers

Sai Tanmay Reddy Chakkera, Aggelina Chatziagapi, Md Moniruzzaman, Chen-ping Yu, Yi-Hsuan Tsai, Dimitris Samaras

NeurIPS 2025poster

We introduce a novel method for low-rank personalization of a generic model for head avatar generation. Prior work proposes generic models that achieve high-quality face animation by leveraging large-scale datasets of multiple identities. However, such generic models usually fail to synthesize uniqu…

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2023

AVFace: Towards Detailed Audio-Visual 4D Face Reconstruction

Aggelina Chatziagapi, Dimitris Samaras

CVPR 2023poster

In this work, we present a multimodal solution to the problem of 4D face reconstruction from monocular videos. 3D face reconstruction from 2D images is an under-constrained problem due to the ambiguity of depth. State-of-the-art methods try to solve this problem by leveraging visual information from…

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