直接将手部动作序列转为文本,提升手语识别准确率。
AutoSign: Direct Pose-to-Text Translation for Continuous Sign Language Recognition
- 用纯解码器架构直接从动作序列生成文本,跳过中间对齐步骤。
- 在Isharah-1000数据集上,错误率降低6.1%,优于现有最佳方法。
- 适合需要高精度、低延迟手语转写的应用场景。
连续手语识别(CSLR)在听障与健听人群之间搭建沟通桥梁,需综合识别手势、面部及身体动作。现有方法依赖多阶段流水线,先提取视觉特征,再通过CTC或HMM对齐长短不一的序列与目标词素,但存在误差传播、过拟合和词汇扩展性差的问题。为此,我们提出AutoSign,一种仅使用解码器的自回归Transformer模型,可直接将姿态序列映射为自然语言文本,完全绕过传统对齐机制。该模型采用1D CNN进行时序压缩,结合预训练阿拉伯语解码器AraGPT2生成词素。消融实验表明,手部与身体动作是独立于说话者的最有效特征。去除多阶段流程后,AutoSign在Isharah-1000数据集上相较最优方法,词错误率(WER)最高降低6.1%。
原文摘要 · Abstract (English)
Continuously recognizing sign gestures and converting them to glosses plays a key role in bridging the gap between the hearing and hearing-impaired communities. This involves recognizing and interpreting the hands, face, and body gestures of the signer, which pose a challenge as it involves a combination of all these features. Continuous Sign Language Recognition (CSLR) methods rely on multi-stage pipelines that first extract visual features, then align variable-length sequences with target glosses using CTC or HMM-based approaches. However, these alignment-based methods suffer from error propagation across stages, overfitting, and struggle with vocabulary scalability due to the intermediate gloss representation bottleneck. To address these limitations, we propose AutoSign, an autoregressive decoder-only transformer that directly translates pose sequences to natural language text, bypassing traditional alignment mechanisms entirely. The use of this decoder-only approach allows the model to directly map between the features and the glosses without the need for CTC loss while also directly learning the textual dependencies in the glosses. Our approach incorporates a temporal compression module using 1D CNNs to efficiently process pose sequences, followed by AraGPT2, a pre-trained Arabic decoder, to generate text (glosses). Through comprehensive ablation studies, we demonstrate that hand and body gestures provide the most discriminative features for signer-independent CSLR. By eliminating the multi-stage pipeline, AutoSign achieves substantial improvements on the Isharah-1000 dataset, achieving an improvement of up to 6.1\% in WER score compared to the best existing method.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。