基于PCA和SVM的实时人脸识别:
faceCapture:首先采集需要被识别人的人脸,每人采取10张,统一格式大小,放入人脸数据库中;
ReadFace:读入训练的人脸数据;
fastPCA:PCA降维;
scaling:训练数据归一化;
train:使用SVM支持向量机训练模型;
imageAcquision:
读入人脸照片—>灰度化—>检测人脸—>扣出人脸—>归一化尺寸—>在训练集的特征子空间中降维—>在训练集每维的最大最小值上数据归一化—>利用训练好的模型预测—>显示
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温馨提示
svm 基于PCA(主成分分析)和SVM(支持向量机)的人脸识别是一种常见的方法。这里是一个简要说明: PCA(主成分分析): PCA是一种降维技术,它通过线性变换将高维数据转换为低维数据,同时保留最大的数据方差。 在人脸识别中,PCA被用来提取人脸图像中的主要特征,从而减少数据的维度,并保留最重要的信息。 SVM(支持向量机): SVM是一种监督学习算法,用于分类和回归分析。 在人脸识别中,SVM被用来构建一个分类器,以将提取的人脸特征映射到相应的人脸身份标签。 基于PCA和SVM的人脸识别流程: 训练阶段: 收集训练数据集,包括多个人的人脸图像和相应的标签。 对每个人脸图像应用PCA,将其转换为低维特征向量。 使用这些特征向量训练一个SVM分类器,使其能够将人脸特征向量与相应的人脸标签关联起来。 测试阶段: 对待识别的人脸图像应用相同的PCA转换,将其转换为与训练数据相同的低维特征向量。 使用训练好的SVM分类器,将待识别的人脸特征向量与已知的人脸标签进行比较,从而确定其身份。 优点: PCA可以有效地降低数据的维度,减少计算复杂度,并提取最相关的特征。 SVM在处理
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