Multi-Modal Zero-Shot Sign Language Recognition

• URL: http://arxiv.org/abs/2109.00796v1
• Date: Thu, 2 Sep 2021 09:10:39 GMT
• Title: Multi-Modal Zero-Shot Sign Language Recognition
• Authors: Razieh Rastgoo, Kourosh Kiani, Sergio Escalera, Mohammad Sabokrou
• Abstract summary: We propose a multi-modal Zero-Shot Sign Language Recognition model. A Transformer-based model along with a C3D model is used for hand detection and deep features extraction. A semantic space is used to map the visual features to the lingual embedding of the class labels.
• Score: 51.07720650677784
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Zero-Shot Learning (ZSL) has rapidly advanced in recent years. Towards overcoming the annotation bottleneck in the Sign Language Recognition (SLR), we explore the idea of Zero-Shot Sign Language Recognition (ZS-SLR) with no annotated visual examples, by leveraging their textual descriptions. In this way, we propose a multi-modal Zero-Shot Sign Language Recognition (ZS-SLR) model harnessing from the complementary capabilities of deep features fused with the skeleton-based ones. A Transformer-based model along with a C3D model is used for hand detection and deep features extraction, respectively. To make a trade-off between the dimensionality of the skeletonbased and deep features, we use an Auto-Encoder (AE) on top of the Long Short Term Memory (LSTM) network. Finally, a semantic space is used to map the visual features to the lingual embedding of the class labels, achieved via the Bidirectional Encoder Representations from Transformers (BERT) model. Results on four large-scale datasets, RKS-PERSIANSIGN, First-Person, ASLVID, and isoGD, show the superiority of the proposed model compared to state-of-the-art alternatives in ZS-SLR.

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