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CrowdGraph: Weakly supervised Crowd Counting via Pure Graph Neural Network

Published: 22 January 2024 Publication History

Abstract

Most existing weakly supervised crowd counting methods utilize Convolutional Neural Networks (CNN) or Transformer to estimate the total number of individuals in an image. However, both CNN-based (grid-to-count paradigm) and Transformer-based (sequence-to-count paradigm) methods take images as inputs in a regular form. This approach treats all pixels equally but cannot address the uneven distribution problem within human crowds. This challenge would lead to a decline in the counting performance of the model. Compared with grid and sequence, the graph structure could better explore the relationship among features. In this article, we propose a new graph-based crowd counting method named CrowdGraph, which reinterprets the weakly supervised crowd counting problem from a graph-to-count perspective. In the proposed CrowdGraph, each image is constructed as a graph, and a graph-based network is designed to extract features at the graph level. CrowdGraph comprises three main components: a dynamic graph convolutional backbone, a multi-scale dilated graph convolution module, and a regression head. To the best of our knowledge, CrowdGraph is the first method that is completely formulated based on the Graph Neural Network (GNN) for the crowd counting task. Extensive experiments demonstrate that the proposed CrowdGraph outperforms pure CNN-based and pure Transformer-based weakly supervised methods comprehensively and achieves highly competitive counting performance.

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  1. CrowdGraph: Weakly supervised Crowd Counting via Pure Graph Neural Network

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    cover image ACM Transactions on Multimedia Computing, Communications, and Applications
    ACM Transactions on Multimedia Computing, Communications, and Applications  Volume 20, Issue 5
    May 2024
    650 pages
    EISSN:1551-6865
    DOI:10.1145/3613634
    • Editor:
    • Abdulmotaleb El Saddik
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    Association for Computing Machinery

    New York, NY, United States

    Publication History

    Published: 22 January 2024
    Online AM: 27 December 2023
    Accepted: 23 December 2023
    Revised: 21 October 2023
    Received: 18 July 2023
    Published in TOMM Volume 20, Issue 5

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    Author Tags

    1. Crowd counting
    2. weakly supervised learning
    3. graph neural network
    4. uneven distribution of crowds

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    • National Key R&D Program of China
    • National Natural Science Foundation of China
    • Beijing Natural Science Foundation

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    • (2024)Continuous fake media detection: Adapting deepfake detectors to new generative techniquesComputer Vision and Image Understanding10.1016/j.cviu.2024.104143249(104143)Online publication date: Dec-2024
    • (2024)Audio–visual deepfake detection using articulatory representation learningComputer Vision and Image Understanding10.1016/j.cviu.2024.104133248(104133)Online publication date: Nov-2024

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