用普通摄像头生成事件帧,实时识别驾驶状态
DriveGazen: Event-Based Driving Status Recognition using Conventional Camera
- 从常规图像生成仿真事件帧,捕捉动态信息
- 新设计网络在光照变化下准确率超90%
- 适合车载安全系统、智能座舱研发人员
我们提出一种可穿戴驾驶状态识别装置,配套开源数据集及一种对光照变化鲁棒的实时方法,通过驾驶员眼部观测识别驾驶状态。核心在于从常规强度帧生成事件帧,并引入新型注意力驱动状态网络(ADSN)。相比事件相机,常规相机提供完整信息且成本更低,但缺乏时间维度,难以有效识别状态。本方法从三方面突破:首先利用视频帧生成逼真的动态视觉传感器(DVS)事件;其次采用脉冲神经网络解码时间信息;最后通过创新的引导注意力模块,在训练与推理中将强度帧的空间特征引导至卷积脉冲层,增强特征学习。我们专门构建了驾驶状态(DriveGaze)数据集验证方法有效性,并在单眼事件情绪(SEE)数据集上进一步验证优势。据我们所知,这是首个结合引导注意力脉冲神经网络与常规相机生成事件帧进行驾驶状态识别的方法。
原文摘要 · Abstract (English)
We introduce a wearable driving status recognition device and our open-source dataset, along with a new real-time method robust to changes in lighting conditions for identifying driving status from eye observations of drivers. The core of our method is generating event frames from conventional intensity frames, and the other is a newly designed Attention Driving State Network (ADSN). Compared to event cameras, conventional cameras offer complete information and lower hardware costs, enabling captured frames to encode rich spatial information. However, these textures lack temporal information, posing challenges in effectively identifying driving status. DriveGazen addresses this issue from three perspectives. First, we utilize video frames to generate realistic synthetic dynamic vision sensor (DVS) events. Second, we adopt a spiking neural network to decode pertinent temporal information. Lastly, ADSN extracts crucial spatial cues from corresponding intensity frames and conveys spatial attention to convolutional spiking layers during both training and inference through a novel guide attention module to guide the feature learning and feature enhancement of the event frame. We specifically collected the Driving Status (DriveGaze) dataset to demonstrate the effectiveness of our approach. Additionally, we validate the superiority of the DriveGazen on the Single-eye Event-based Emotion (SEE) dataset. To the best of our knowledge, our method is the first to utilize guide attention spiking neural networks and eye-based event frames generated from conventional cameras for driving status recognition. Please refer to our project page for more details: https://github.com/TooyoungALEX/AAAI25-DriveGazen.
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