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Hans Peter Graf

6 accepted papers

2022

COMPOSER: Compositional Reasoning of Group Activity in Videos with Keypoint-Only Modality

ECCV 2022poster

"Group Activity Recognition detects the activity collectively performed by a group of actors, which requires compositional reasoning of actors and objects. We approach the task by modeling the video as tokens that represent the multi-scale semantic concepts in the video. We propose COMPOSER, a Multi…

2021

Hopper: Multi-hop Transformer for Spatiotemporal Reasoning

ICLR 2021poster

This paper considers the problem of spatiotemporal object-centric reasoning in videos. Central to our approach is the notion of object permanence, i.e., the ability to reason about the location of objects as they move through the video while being occluded, contained or carried by other objects. Exi…

2020

S3VAE: Self-Supervised Sequential VAE for Representation Disentanglement and Data Generation

CVPR 2020poster

We propose a sequential variational autoencoder to learn disentangled representations of sequential data (e.g., videos and audios) under self-supervision. Specifically, we exploit the benefits of some readily accessible supervision signals from input data itself or some off-the-shelf functional mode…

Cited by 136PDFScholar
2018

Attend and Interact: Higher-Order Object Interactions for Video Understanding

CVPR 2018poster

Human actions often involve complex interactions across several inter-related objects in the scene. However, existing approaches to fine-grained video understanding or visual relationship detection often rely on single object representation or pairwise object relationships. Furthermore, learning int…