Perceive What Matters: Relevance-Driven Scheduling for Multimodal Streaming Perception

TL;DR

This paper introduces a lightweight, relevance-driven perception scheduling framework for multimodal streaming perception in human-robot collaboration, reducing latency and improving key perception metrics by leveraging scene context and previous outputs.

Contribution

It presents a novel real-time perception scheduling method that efficiently allocates computational resources based on scene relevance, addressing redundancy and latency issues in multimodal perception pipelines.

Findings

Reduces computational latency by up to 27.52%.

Achieves a 72.73% improvement in MMPose activation recall.

Attains up to 98% keyframe accuracy.

Abstract

In modern human-robot collaboration (HRC) applications, multiple perception modules jointly extract visual, auditory, and contextual cues to achieve comprehensive scene understanding, enabling the robot to provide appropriate assistance to human agents intelligently. While executing multiple perception modules on a frame-by-frame basis enhances perception quality in offline settings, it inevitably accumulates latency, leading to a substantial decline in system performance in streaming perception scenarios. Recent work in scene understanding, termed Relevance, has established a solid foundation for developing efficient methodologies in HRC. However, modern perception pipelines still face challenges related to information redundancy and suboptimal allocation of computational resources. Drawing inspiration from the Relevance concept and the information sparsity in HRC events, we propose a novel lightweight perception scheduling framework that efficiently leverages output from previous frames to estimate and schedule necessary perception modules in real-time based on scene context. The experimental results demonstrate that the proposed perception scheduling framework effectively reduces computational latency by up to 27.52% compared to conventional parallel perception pipelines, while also achieving a 72.73% improvement in MMPose activation recall. Additionally, the framework demonstrates high keyframe accuracy, achieving rates of up to 98%. The results validate the framework's capability to enhance real-time perception efficiency without significantly compromising accuracy. The framework shows potential as a scalable and systematic solution for multimodal streaming perception systems in HRC.