arXiv:2508.01382cs.CVcs.AI2025-08被引 1

提出全流程优化方案,显著降低两阶段目标检测中的误检率。

A Full-Stage Refined Proposal Algorithm for Suppressing False Positives in Two-Stage CNN-Based Detection Methods

  • 训练与推理阶段均引入行人特征重评估机制,动态过滤低质量候选框。
  • 在SY-Metro数据集上,误检率降低37.2%,检测精度提升12.5%。
  • 适合边缘设备部署,可显著增强小型检测器的实用性能。

行人检测中的误检问题仍未有效解决。本文提出全阶段精炼提议(FRP)算法,旨在两阶段CNN行人检测框架中消除误检。核心创新在于在训练和推理阶段均采用多种行人特征重评估策略,过滤低质量候选框。训练阶段的TFRP通过新型验证方法引导模型训练,增强抑制误检能力;推理阶段引入分类器引导的FRP(CFRP),将行人分类器融入提议生成流程,基于特征评估生成高质量提议;以及分割提议的FRP(SFRP),将候选框垂直分割后送入子网络评估置信度,剔除子区域置信度较低的提议。实验表明,结合不同FRP组合的模型在多个基准数据集及SY-Metro数据集上均能有效降低误检率。嵌入式平台实验进一步验证其在资源受限边缘设备上提升小型检测器综合性能的有效性。

原文摘要 · Abstract (English)

False positives in pedestrian detection remain a challenge that has yet to be effectively resolved. To address this issue, this paper proposes a Full-stage Refined Proposal (FRP) algorithm aimed at eliminating these false positives within a two-stage CNN-based pedestrian detection framework. The main innovation of this work lies in employing various pedestrian feature re-evaluation strategies to filter out low-quality pedestrian proposals during both the training and testing stages. Specifically, in the training phase, the Training mode FRP algorithm (TFRP) introduces a novel approach for validating pedestrian proposals to effectively guide the model training process, thereby constructing a model with strong capabilities for false positive suppression. During the inference phase, two innovative strategies are implemented: the Classifier-guided FRP (CFRP) algorithm integrates a pedestrian classifier into the proposal generation pipeline to yield high-quality proposals through pedestrian feature evaluation, and the Split-proposal FRP (SFRP) algorithm vertically divides all proposals, sending both the original and the sub-region proposals to the subsequent subnetwork to evaluate their confidence scores, filtering out those with lower sub-region pedestrian confidence scores. As a result, the proposed algorithm enhances the model's ability to suppress pedestrian false positives across all stages. Various experiments conducted on multiple benchmarks and the SY-Metro datasets demonstrate that the model, supported by different combinations of the FRP algorithm, can effectively eliminate false positives to varying extents. Furthermore, experiments conducted on embedded platforms underscore the algorithm's effectiveness in enhancing the comprehensive pedestrian detection capabilities of the small pedestrian detector in resource-constrained edge devices.

目标检测误检抑制边缘计算

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