VALO让激光雷达目标检测模型动态调节速度与精度,适应不同实时需求。
VALO: A Versatile Anytime Framework for LiDAR-based Object Detection Deep Neural Networks
- 基于输入区域选择性处理,无需修改网络结构即可调节计算量。
- 在CenterPoint和VoxelNext上实现更优精度,支持多种时间约束。
- 通过历史检测预测和输入压缩技术,减少延迟且不损失准确率。
本文针对激光雷达目标检测深度神经网络在资源受限边缘平台上的动态延迟需求挑战,提出一种新型数据驱动的任意时刻计算框架VALO(Versatile Anytime algorithm for LiDAR Object detection)。该方法通过任务感知调度器有选择地处理输入区域,在不改变网络结构的前提下实现执行时间与精度的动态权衡。同时,利用过往检测结果的高效预测来缓解部分处理带来的精度损失,并引入新颖的检测头内输入缩减技术,显著加速推理过程而无需牺牲准确性。我们在当前先进的3D激光雷达目标检测模型CenterPoint和VoxelNext上实现了VALO,验证其在广泛的时间约束下具备优异的动态适应能力,且精度优于现有最先进方法。
原文摘要 · Abstract (English)
This work addresses the challenge of adapting dynamic deadline requirements for LiDAR object detection deep neural networks (DNNs). The computing latency of object detection is critically important to ensure safe and efficient navigation. However, state-of-the-art LiDAR object detection DNNs often exhibit significant latency, hindering their real-time performance on resource-constrained edge platforms. Therefore, a tradeoff between detection accuracy and latency should be dynamically managed at runtime to achieve optimum results. In this paper, we introduce VALO (Versatile Anytime algorithm for LiDAR Object detection), a novel data-centric approach that enables anytime computing of 3D LiDAR object detection DNNs. VALO employs a deadline-aware scheduler to selectively process input regions, making execution time and accuracy tradeoffs without architectural modifications. Additionally, it leverages efficient forecasting of past detection results to mitigate possible loss of accuracy due to partial processing of input. Finally, it utilizes a novel input reduction technique within its detection heads to significantly accelerate execution without sacrificing accuracy. We implement VALO on state-of-the-art 3D LiDAR object detection networks, namely CenterPoint and VoxelNext, and demonstrate its dynamic adaptability to a wide range of time constraints while achieving higher accuracy than the prior state-of-the-art. Code is available athttps://github.com/CSL-KU/VALO}{github.com/CSL-KU/VALO.
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