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1.
作为一种新兴的生物特征识别技术,基于人脸图像的年龄估计技术在目前已经成为计算机视觉、人机交互等领域的一个重要研究课题。2006年以来,深度卷积网络在图像识别、语音识别和自然语言处理等领域广泛使用,取得了很好的效果。本文基于深度卷积网络的人脸年龄分析算法,构建一个多层卷积神经网络,通过卷积神经网络获取深度卷积激活特征,作为人脸年龄估计的特征,并利用支持向量机(SVM)的方法训练年龄估计模型,得到年龄估计结果,在人脸识别权威数据集Morph上获得了91.3%的正确率,同时也对比在了不同条件下对实验结果的影响。  相似文献   

2.
人脸年龄估计由于在人机交互和安全控制等领域有潜在应用,因此得到了广泛关注。文中主要进行人脸年龄分组的研究,针对人脸年龄分类问题提出了一种基于集成卷积神经网络的年龄分类算法。首先,训练两个以人脸图像为输入的卷积神经网络,当用卷积神经网络直接提取人脸图像的特征时,主要对 深度的全局特征 进行提取。为了补充人脸图像的局部特征,尤其是纹理信息,将提取的LBP(Local Binary Pattern)特征作为另一个网络的输入。最后,为了结合人脸的全局特征和局部特征,将这3个网络进行集成。该算法在广泛使用的年龄分类数据集Group上取得了不错的效果。  相似文献   

3.
基于视听信息的自动年龄估计方法   总被引:1,自引:0,他引:1  
方尔庆  耿新 《软件学报》2011,22(7):1503-1523
年龄是人的重要属性.近年来,自动估计用户年龄逐渐成为一个涉及模式识别、计算机视觉、语音识别、人机交互、机器学习等领域的活跃课题.其在现实世界中也有很多的实际应用,如法医学、电子商务、安全控制等等.日常生活中,人们往往可以很容易地根据视听信息(这里主要指人脸和语音)来判断一个人的年龄,原因在于人脸和语音是人的年龄信息的重要载体.同样的,人机交互系统可以根据人脸图像以及语音来自动进行年龄估计.主要介绍了基于视听信息进行年龄估计的应用领域所遇到的挑战以及现有的解决方案.详细介绍了基于视听信息的年龄估计所用到的主要模型、算法及其性能与特点,并且分析了自动年龄估计未来可能的发展趋势.  相似文献   

4.
目的 人脸年龄估计技术作为一种新兴的生物特征识别技术,已经成为计算机视觉领域的重要研究方向之一。随着深度学习的飞速发展,基于深度卷积神经网络的人脸年龄估计技术已成为研究热点。方法 本文以基于深度学习的真实年龄和表象年龄估计方法为研究对象,通过调研文献,分析了基于深度学习的人脸年龄估计方法的基本思想和特点,阐述其研究现状,总结关键技术及其局限性,对比了常见人脸年龄估计方法的性能,展望了未来的发展方向。结果 尽管基于深度学习的人脸年龄估计研究取得了巨大的进展,但非受限条件下年龄估计的效果仍不能满足实际需求,主要因为当前人脸年龄估计研究仍存在以下困难:1)引入人脸年龄估计的先验知识不足;2)缺少兼顾全局和局部细节的人脸年龄估计特征表达方法;3)现有人脸年龄估计数据集的限制;4)实际应用环境下的多尺度人脸年龄估计问题。结论 基于深度学习的人脸年龄估计技术已取得显著进展,但是由于实际应用场景复杂,容易导致人脸年龄估计效果不佳。对目前基于深度学习的人脸年龄估计技术进行全面综述,从而为研究者解决存在的问题提供便利。  相似文献   

5.
有关年龄估计的研究在人机交互领域有着非常重要的意义。该文提出一种基于人脸图像的年龄估计方法,该方法首先基于颅面成长模式理论建立人脸测量模板,在此模板上计算面部几何比例特征,然后运用分数阶微分提取人脸局部区域的纹理特征,结合这两类特征构成个体年龄特征向量;通过聚类学习的方法训练年龄特征向量获得年龄-特征映射矩阵,最后由此矩阵表决出输入人脸的估计年龄。实验结果表明,基于这两种特征构建的年龄估计模型可以获得较好的年龄估计结果,年龄误差较小,分类准确率接近人的主观判断结果。  相似文献   

6.
基于ICA系数稀疏表示的年龄自动估计   总被引:2,自引:0,他引:2       下载免费PDF全文
基于人脸图像的人类生理年龄自动估计是人脸识别领域的一个重要研究方向.对此,使用一种基于WTA(winner-take-all)竞争规则的独立分量分析方法来实现年龄估计任务.首先对人脸图像进行归一化处理,利用PCA方法进行白化预处理以进一步降低训练集合的维数;然后,使用WTA-ICA稀疏表示实现人脸图像的特征提取.最后在FG-NET Aging database人脸数据库的实验结果表明,该算法对基于人脸图像的年龄估计获得了较好的结果.  相似文献   

7.
年龄信息作为人类生物特征识别的重要组成部分,在社会保障和数字娱乐等领域具有广泛的应用前景。人脸年龄合成技术由于其广泛的应用价值,受到了越来越多学者的重视,已经成为计算机视觉领域的重要研究方向之一。随着深度学习的快速发展,基于生成对抗网络的人脸年龄合成技术已成为研究热点。尽管基于生成对抗网络的人脸年龄合成方法取得了不错的成果,但生成的人脸年龄图像仍存在图像质量较差、真实感较低、年龄转换效果和多样性不足等问题。主要因为当前人脸年龄合成研究仍存在以下困难: 1)现有人脸年龄合成数据集的限制; 2)引入人脸年龄合成的先验知识不足; 3)人脸年龄图像的细粒度性被忽视; 4)高分辨率下的人脸年龄合成问题;5)目前人脸年龄合成方法的评价标准不规范。本文对目前人脸年龄合成技术进行全面综述,以人脸年龄合成方法为研究对象,阐述其研究现状。通过调研文献,对人脸年龄合成方法进行分类,重点介绍了基于生成对抗网络的人脸年龄合成方法。此外,本文还讨论了常用的人脸年龄合成数据集及评价指标,分析了各种人脸年龄合成方法的基本思想、特点及其局限性,对比了部分代表方法的性能,指出了该领域目前存在的挑战并提供了一些具有潜力的研究方向,为研究者们解决存在的问题提供便利。  相似文献   

8.
年龄是人固有的生物特征,随着年龄的变化,人脸特征也不断变化.近年来基于人脸图像的年龄估计方法的研究不断深入.基于人脸图像的年龄估计主要有两个阶段:特征提取和估计方法.针对以上两个阶段,分别提出相应的方法.在特征提取方面,为了更好地描述年龄变化,特别是针对未成年人,引入了方向梯度直方图(Histogram ofOriented Gradient,HOG)特征,并将其与局部二元模式(Local Binary Pattern,LBP)特征进行融合;在估计方法方面,提出了软双层估计模型,其采用由粗到细的策略.首先,在第一层将人脸分成“未成年人”与“成年人”两类;然后,在第二层通过在两类的边界设置重叠区域,分别对其建立年龄估计模型,以对第一层的错误分类进行补救.通过实验发现,融合的特征具有更强的年龄判别性,同时,软双层模型也进一步提高了年龄估计的准确度.  相似文献   

9.
基于局域二值模式与支持向量机的年龄估计   总被引:1,自引:0,他引:1       下载免费PDF全文
为了解决在人脸识别过程中由于年龄的变化而使人脸识别率急剧下降的问题,可在识别过程中加入快速、准确的年龄估计。提出了一种基于局域二值模式LBP(Local Binary Pattern)与支持向量机SVM(Support Vector Machine)回归相结合的年龄估计方法。对于人脸图像首先采用基于局部纹理特征的LBP算子进行人脸纹理特征提取;然后用基于整体特征的PCA方法对提取出来的纹理特征向量进行降维;最后使用SVM回归进行训练得到全局年龄函数,建立纹理特征向量与年龄之间的对应关系。实验结果表明,这种方法可以快速有效地对人脸图像进行年龄估计。  相似文献   

10.
基于一种改进NMF算法的人脸年龄估计方法   总被引:3,自引:1,他引:2       下载免费PDF全文
基于人脸图像的年龄自动估计是人脸识别领域的一个重要研究方向,同时也是一个难点。对此,提出了一种改进的NMF算法来实现人脸年龄估计,该算法首先对NMF分解的基图像进行判别分析,保留最具判别力的基图像来构造子空间,然后将整体训练集图像向得到的子空间进行投影,并用RBF(radial basis function)神经网络进行训练和测试,提取包含在大多数人脸图像上的年龄信息来进行年龄估计,实验结果表明,该算法获得了较好的测试结果。  相似文献   

11.
Face analysis tasks, e.g., estimating gender or age from a face image, have been attracting increasing interest in recent years. However, most existing studies focus mainly on analyzing an adult's face and ignore an interesting question:is it easy to estimate gender and age from a baby's face? In this paper, we explore this interesting problem. We first collect a new face image dataset for our research, named BabyFace, which contains 15 528 images from 5 872 babies younger than two years old. Besides gender, each face image is annotated with age in months from 0 to 24. In addition, we propose new age estimation and gender recognition methods. In particular, based on SSR-Net backbone, we introduce the attention mechanism module to solve the age estimation problem on the BabyFace dataset, named SSR-SE. In the part of gender recognition, inspired by the age estimation method, we also use a two-stream structure, named Two-Steam SE-block with Augment (TSSEAug). We extensively evaluate the performance of the proposed methods against the state-of-the-art methods on BabyFace. Our age estimation model achieves very appealing performance with an estimation error of less than two months. The proposed gender recognition method obtains the best accuracy among all compared methods. To the best of our knowledge, we are the first to study age estimation and gender recognition from a baby's face image, which is complementary to existing adult gender and age estimation methods and can shed some light on exploring baby face analysis.  相似文献   

12.
近年来,生成对抗网络(generativeadversarialnetwork,GAN)家族已在人脸年龄合成任务上取得了巨大的成功.然而,通过研究发现,在解决人脸年龄合成的问题时,即使是善于利用年龄先验信息的条件生成对抗网络(conditional generative adversarial network, CGAN),重要的人脸年龄相关信息在一程度上也会被丢弃.这是导致以CGAN为代表的GAN家族在人脸年龄合成上的性能到达瓶颈期的一个重要因素.为此,提出了一种类别注意实例归一化机制(class-aware instance normalization, CAIN).该机制能够灵活地嵌入到CGAN中,形成一种新的生成对抗网络模型,即CAIN-GAN.CAIN-GAN能够充分利用人脸年龄先验信息来进一步提高人脸年龄合成性能.在公开数据集上的实验结果表明,与其他几种GAN家族的方法对比, CAIN-GAN方法仅通过利用人脸年龄相关信息就能对人脸年龄合成性能进行提升.  相似文献   

13.
Human age, gender and ethnicity are valuable demographic characteristics. They are also important soft biometric traits useful for human identification or verification. We present a framework that can estimate the three traits jointly. The joint estimation framework could deal with the mutual influence of age, gender, and ethnicity implicitly. Under this joint estimation framework, we explore different methods for simultaneous estimation of age, gender, and ethnicity. The canonical correlation analysis (CCA) based methods, and partial least squares (PLS) models are explored under our joint estimation framework. Both the linear and nonlinear methods are investigated to measure the performance. We also validate some extensions of these methods, such as the least squares formulations of the CCA methods. We found some consistent ranking of these methods under our joint estimation framework. More importantly, we found that the CCA based methods can derive an extremely low dimensionality in estimating age, gender and ethnicity. An analysis of this property is given based on the rank theory. The experiments are conducted on a very large database containing more than 55,000 face images.  相似文献   

14.
Most previous research on human age estimation based on the detection of multiple feature points using the active appearance model (AAM) method. However, it is difficult to use the AAM-based methods in actual applications, because their performance is strongly affected by image backgrounds, head movements, and non-uniform facial region illumination. Furthermore, they require significant processing time. Other age estimation methods based on a detected face box area may be considered as an alternative; however, noise areas that include hair, backgrounds, and non-uniform illumination of visible light camera sensor may be inadvertently included in the face box, which reduces age estimation accuracy. Therefore, we propose a new age estimation method that is robust to these noise areas. Our proposed method is novel in following four ways. First, we propose an age estimation method using a weighted multi-level local binary pattern (wMLBP) based on a fuzzy-logic system. Second, two input values (the difference between the mean gray levels of the sub-block and the central area of the face, and the distance from the sub-block to the center of the facial region) are determined considering the noise areas of hair, background, and non-uniform illumination of visible light camera sensor. Then, the optimal weights are determined using a fuzzy-logic system with these two input values, which does not require a time-consuming training process. Third, by assigning an optimal weight to the histogram features extracted by the MLBP method in each sub-block, age estimation accuracy is enhanced. Finally, the age is estimated using a SVR method based on a combination of weighted MLBP features and Gabor wavelet features. Experimental results obtained using the public PAL and MORPH age databases demonstrate that the accuracy of our method is superior to other previous methods.  相似文献   

15.
The research related to age estimation using face images has become increasingly important, due to the fact it has a variety of potentially useful applications. An age estimation system is generally composed of aging feature extraction and feature classification; both of which are important in order to improve the performance. For the aging feature extraction, the hybrid features, which are a combination of global and local features, have received a great deal of attention, because this method can compensate for defects found in individual global and local features. As for feature classification, the hierarchical classifier, which is composed of an age group classification (e.g. the class of less than 20 years old, the class of 20-39 years old, etc.) and a detailed age estimation (e.g. 17, 23 years old, etc.), provide a much better performance than other methods. However, both the hybrid features and hierarchical classifier methods have only been studied independently and no research combining them has yet been conducted in the previous works. Consequently, we propose a new age estimation method using a hierarchical classifier method based on both global and local facial features. Our research is novel in the following three ways, compared to the previous works. Firstly, age estimation accuracy is greatly improved through a combination of the proposed hybrid features and the hierarchical classifier. Secondly, new local feature extraction methods are proposed in order to improve the performance of the hybrid features. The wrinkle feature is extracted using a set of region specific Gabor filters, each of which is designed based on the regional direction of the wrinkles, and the skin feature is extracted using a local binary pattern (LBP), capable of extracting the detailed textures of skin. Thirdly, the improved hierarchical classifier is based on a support vector machine (SVM) and a support vector regression (SVR). To reduce the error propagation of the hierarchical classifier, each age group classifier is designed so that the age range to be estimated is overlapped by consideration of false acceptance error (FAE) and false rejection error (FRE) of each classifier. The experimental results showed that the performance of the proposed method was superior to that of the previous methods when using the BERC, PAL and FG-Net aging databases.  相似文献   

16.
针对以往利用人脸图像单方面进行性别识别或年龄估计,提出了利用公共特征、私有特征同时进行性别识别与年龄估计.用对光照、尺度变化具有很强鲁棒性的Gabor小波变换提取人脸特征.降维后的有效人脸特征分成公共特征、私有特征两部分,公共特征用于性别识别,私有特征进行年龄估计.在FG-NET人脸库及自建OFID人脸库中用RBF神经网络进行了实验,取得了良好效果.  相似文献   

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