Real-time perception, or streaming perception, is a crucial aspect of autonomous driving that has yet to be thoroughly explored in existing research. To address this gap, we present DAMO-StreamNet, an optimized framework that combines recent advances from the YOLO series with a comprehensive analysis of spatial and temporal perception mechanisms, delivering a cutting-edge solution. The key innovations of DAMO-StreamNet are: (1) A robust neck structure incorporating deformable convolution, enhancing the receptive field and feature alignment capabilities. (2) A dual-branch structure that integrates short-path semantic features and long-path temporal features, improving motion state prediction accuracy. (3) Logits-level distillation for efficient optimization, aligning the logits of teacher and student networks in semantic space. (4) A real-time forecasting mechanism that updates support frame features with the current frame, ensuring seamless streaming perception during inference. Our experiments demonstrate that DAMO-StreamNet surpasses existing state-of-the-art methods, achieving 37.8% (normal size (600, 960)) and 43.3% (large size (1200, 1920)) sAP without using extra data. This work not only sets a new benchmark for real-time perception but also provides valuable insights for future research. Additionally, DAMO-StreamNet can be applied to various autonomous systems, such as drones and robots, paving the way for real-time perception.
翻译:实时感知(即流式感知)是自动驾驶的关键环节,但在现有研究中尚未得到充分探索。为填补这一空白,我们提出DAMO-StreamNet,一个结合YOLO系列最新进展并对时空感知机制进行综合分析而优化的框架,提供了前沿解决方案。DAMO-StreamNet的核心创新包括:(1)一种融合可变形卷积的稳健颈部结构,增强了感受野与特征对齐能力。(2)一种整合短路径语义特征与长路径时序特征的双分支结构,提升了运动状态预测精度。(3)面向高效优化的Logits级蒸馏,在语义空间中对齐教师网络与学生网络的Logits。(4)一种实时预测机制,利用当前帧更新支撑帧特征,确保推理过程中的无缝流式感知。实验表明,DAMO-StreamNet超越现有最先进方法,在未使用额外数据情况下,正常尺寸(600, 960)下sAP达到37.8%,大尺寸(1200, 1920)下达到43.3%。本工作不仅为实时感知设立了新基准,也为未来研究提供了宝贵洞见。此外,DAMO-StreamNet可应用于无人机、机器人等多种自主系统,为实时感知铺平道路。