The objective of this work is to annotate sign instances across a broad vocabulary in continuous sign language. We train a Transformer model to ingest a continuous signing stream and output a sequence of written tokens on a large-scale collection of signing footage with weakly-aligned subtitles. We show that through this training it acquires the ability to attend to a large vocabulary of sign instances in the input sequence, enabling their localisation. Our contributions are as follows: (1) we demonstrate the ability to leverage large quantities of continuous signing videos with weakly-aligned subtitles to localise signs in continuous sign language; (2) we employ the learned attention to automatically generate hundreds of thousands of annotations for a large sign vocabulary; (3) we collect a set of 37K manually verified sign instances across a vocabulary of 950 sign classes to support our study of sign language recognition; (4) by training on the newly annotated data from our method, we outperform the prior state of the art on the BSL-1K sign language recognition benchmark.
@article{arxiv.2103.16481,
title = {Read and Attend: Temporal Localisation in Sign Language Videos},
author = {Gül Varol and Liliane Momeni and Samuel Albanie and Triantafyllos Afouras and Andrew Zisserman},
journal= {arXiv preprint arXiv:2103.16481},
year = {2021}
}
Comments
Appears in: 2021 IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2021). 14 pages