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Future Internet 2018, 10(8), 80; https://doi.org/10.3390/fi10080080

A Fast and Lightweight Method with Feature Fusion and Multi-Context for Face Detection

1
and
1,2,*
1
School of Computer Engineering and Science, Shanghai University, Shanghai 200444, China
2
Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai 200444, China
*
Author to whom correspondence should be addressed.
Received: 23 July 2018 / Revised: 6 August 2018 / Accepted: 14 August 2018 / Published: 17 August 2018
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Abstract

Convolutional neural networks (CNN for short) have made great progress in face detection. They mostly take computation intensive networks as the backbone in order to obtain high precision, and they cannot get a good detection speed without the support of high-performance GPUs (Graphics Processing Units). This limits CNN-based face detection algorithms in real applications, especially in some speed dependent ones. To alleviate this problem, we propose a lightweight face detector in this paper, which takes a fast residual network as backbone. Our method can run fast even on cheap and ordinary GPUs. To guarantee its detection precision, multi-scale features and multi-context are fully exploited in efficient ways. Specifically, feature fusion is used to obtain semantic strongly multi-scale features firstly. Then multi-context including both local and global context is added to these multi-scale features without extra computational burden. The local context is added through a depthwise separable convolution based approach, and the global context by a simple global average pooling way. Experimental results show that our method can run at about 110 fps on VGA (Video Graphics Array)-resolution images, while still maintaining competitive precision on WIDER FACE and FDDB (Face Detection Data Set and Benchmark) datasets as compared with its state-of-the-art counterparts. View Full-Text
Keywords: convolutional neural networks; face detection; feature fusion; context; speed; precision convolutional neural networks; face detection; feature fusion; context; speed; precision
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Zhang, L.; Zhi, X. A Fast and Lightweight Method with Feature Fusion and Multi-Context for Face Detection. Future Internet 2018, 10, 80.

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