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A novel convolutional neural network method for crowd counting

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Abstract

Crowd density estimation, in general, is a challenging task due to the large variation of head sizes in the crowds. Existing methods always use a multi-column convolutional neural network (MCNN) to adapt to this variation, which results in an average effect in areas with different densities and brings a lot of noise to the density map. To address this problem, we propose a new method called the segmentation-aware prior network (SAPNet), which generates a high-quality density map without noise based on a coarse head-segmentation map. SAPNet is composed of two networks, i.e., a foreground-segmentation convolutional neural network (FS-CNN) as the front end and a crowd-regression convolutional neural network (CR-CNN) as the back end. With only the single dot annotation, we generate the ground truth of segmentation masks in heads. Then, based on the ground truth, FS-CNN outputs a coarse head-segmentation map, which helps eliminate the noise in regions without people in the density map. By inputting the head-segmentation map generated by the front end, CR-CNN performs accurate crowd counting estimation and generates a high-quality density map. We demonstrate SAPNet on four datasets (i.e., ShanghaiTech, UCF-CC-50, WorldExpo’10, and UCSD), and show the state-of-the-art performances on ShanghaiTech part B and UCF-CC-50 datasets.

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Correspondence to Xiao-guang Di.

Additional information

Project supported by the National Natural Science Foundation of China (No. 61775048) and the Fundamental Research Funds for the Central Universities, China (No. ZDXMPY20180103)

Contributors

Jie-hao HUANG and Xiao-guang DI designed the research. Jie-hao HUANG drafted the manuscript. Jie-hao HUANG, Jun-de WU, and Ai-yue CHEN processed the data. Xiao-guang DI helped organize the manuscript. Jie-hao HUANG and Xiao-guang DI revised and finalized the paper.

Compliance with ethics guidelines

Jie-hao HUANG, Xiao-guang DI, Jun-de WU, and Aiyue CHEN declare that they have no conflict of interest.

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Huang, Jh., Di, Xg., Wu, Jd. et al. A novel convolutional neural network method for crowd counting. Front Inform Technol Electron Eng 21, 1150–1160 (2020). https://doi.org/10.1631/FITEE.1900282

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  • DOI: https://doi.org/10.1631/FITEE.1900282

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