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成都工业学院 电子工程学院, 四川 成都 610031
Received:03 November 2020,
Revised:24 November 2020,
Published:2021-07
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Yan WANG, Meng QI. Face detection algorithm based on LVQ neural network model[J]. Chinese journal of liquid crystals and displays, 2021, 36(7): 1027-1034.
Yan WANG, Meng QI. Face detection algorithm based on LVQ neural network model[J]. Chinese journal of liquid crystals and displays, 2021, 36(7): 1027-1034. DOI: 10.37188/CJLCD.2020-0295.
人脸检测是人脸识别的首要环节。为快速准确地从复杂背景中定位出人脸区域,本文提出一种基于LVQ神经网络的人脸检测算法。通过分析肤色特征,将图像分别转换到YCbCr空间和HSI空间,提取
Cb
、
Cr
、
H
、
S
颜色分量用来描述人脸图像特征。构建结构为4-20-2的LVQ神经网络模型,选取100幅图像作为LVQ神经网络的训练样本,20幅图像作为测试样本,迭代次数为150次,误差为0.001。经过训练,得到了有效的权值。利用训练后的神经网络,分别在LFW、AFW和Faces数据集上进行了性能测试,在3个数据集的正检率分别为76.82%,84.42%,100%,误检率分别为17.34%,12.34%,0,漏检率分别为21.55%,15.63%,0。实验结果表明,相对于传统的基于肤色特征的人脸检测方法,本方法在正检率、误检率及漏检率方面均表现出良好的优越性。
Face detection is the first step of face recognition. In order to fix the face region from the complex background rapidly
a method based on LVQ is studied in this paper. By analyzing the color features of skin
images are converted into YCbCr space and HSI space firstly
and then
Cb
Cr
H
S
color components are extracted to describe the facial image features. An LVQ neural network with a structure of 4-20-2 is constructed
100 images as training samples and 20 images as test samples are selected for this neural network. The number of iterations is 150 and the error is 0.001. After training
the effective weight are obtained. Using the trained neural network
the performance tests are performed on the LFW
Faces
and AFW datasets. The positive detection rates in the three data sets are 76.82%
84.42%
100%
the false detection rates are 17.34%
12.34%
and 0
and the missed detection rates are 21.55%
15.63%
and 0
respectively. The experimental results show that the method in our paper shows good superiority in terms of positive detection rate
false detection rate and missed detection rate compared with the traditional face detection method based on skin color features.
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