从图像中提取面部特征，然后根据这些特征值，恢复出图像-Extract facial features, then these eigenvalues ​ ​ and restore the image from the image

离散张量核磁共振成像数据集的可视化，涉及到特征值，特征向量-Visualization of discrete tensor magnetic resonance imaging data sets related to the eigenvalues, eigenvectors