how can i do a pca for multiple people which pca algorithm has multiple individuals in it why are eigenfaces used in pca algorithms what is pca eigenface how many samples to use for pca which algorithm would you use to create a pca matrix what is the best way to populate the pca training matrix? how to use multiple image to run pca which of the following is the most effective way to populate the pca training matrix for eigenfaces? how many images in a matrix how many sample images should be used for a pca how to use the pca algorithm how many images are in pca how many images are needed to run the initial pca? what is the most effective way to populate the pca training matrix? how many pictures in a data matrix how many individual images in eigenface pca why do you need to be able to do a pca in a matrix of image? pca training matrix image how many how many image for pca