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Refining action segmentation with hierarchical video representations

Ahn, Hyemin and Lee, Dongheui (2021) Refining action segmentation with hierarchical video representations. In: 18th IEEE/CVF International Conference on Computer Vision (ICCV), pp. 16302-16310. international Conference on Computer Vision, 11 Oct - 17 Oct 2021, Virtual.

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Official URL: https://openaccess.thecvf.com/content/ICCV2021/html/Ahn_Refining_Action_Segmentation_With_Hierarchical_Video_Representations_ICCV_2021_paper.html


In this paper, we propose Hierarchical Action Segmentation Refiner (HASR), which can refine temporal action segmentation results from various models by understanding the overall context of a given video in a hierarchical way. When a backbone model for action segmentation estimates how the given video can be segmented, our model extracts segment-level representations based on frame-level features, and extracts a video-level representation based on the segment-level representations. Based on these hierarchical representations, our model can refer to the overall context of the entire video, and predict how the segment labels that are out of context should be corrected. Our HASR can be plugged into various action segmentation models (MS-TCN, SSTDA, ASRF), and improve the performance of state-of-the-art models based on three challenging datasets (GTEA, 50Salads, and Breakfast). For example, in 50Salads dataset, the segmental edit score improves from 67.9% to 77.4% (MS-TCN), from 75.8% to 77.3% (SSTDA), from 79.3% to 81.0% (ASRF). In addition, our model can refine the segmentation result from the unseen backbone model, which was not referred to when training HASR. This generalization performance would make HASR be an effective tool for boosting up the existing approaches for temporal action segmentation. Our code is available at https://github.com/cotton-ahn/HASR_iccv2021.

Item URL in elib:https://elib.dlr.de/147186/
Document Type:Conference or Workshop Item (Poster)
Additional Information:This work has been partially supported by the Helmholtz Association.
Title:Refining action segmentation with hierarchical video representations
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Ahn, HyeminHyemin.Ahn (at) dlr.dehttps://orcid.org/0000-0001-8081-6023
Lee, DongheuiDongheui.Lee (at) dlr.dehttps://orcid.org/0000-0003-1897-7664
Date:October 2021
Journal or Publication Title:18th IEEE/CVF International Conference on Computer Vision (ICCV)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 16302-16310
Keywords:Video Action Segmentation; Computer Vision; Deep Learning
Event Title:international Conference on Computer Vision
Event Location:Virtual
Event Type:international Conference
Event Dates:11 Oct - 17 Oct 2021
Organizer:IEEE Computer Society
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Robotics
DLR - Research area:Raumfahrt
DLR - Program:R RO - Robotics
DLR - Research theme (Project):R - Autonomous learning robots [RO], R - Intuitive human-robot interface [RO]
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics (since 2013)
Deposited By: Ahn, Hyemin
Deposited On:10 Dec 2021 09:22
Last Modified:10 Dec 2021 09:22

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