model-based approach\3-D active appearance models-Segmentation of cardiac MR and ultrasound images.pdf ....................\Automatic segmentation of echocardiographic sequences by active appearance motion model.pdf ....................\PCA\PCA.pdf ....................\...\PCAderivations.pdf ....................\...\pca_two views.pdf ....................\...\SVD.pdf ....................\PCA model-based approach