face


A 192 by 168 data matrix storing gray-scale pixel intensities of a corrupted face image.
The original image was taken from Yale Face Database B [Georghiades et al. 2001]
and then manually corrupted.
Run the following line to see the image:
image(t(face[ncol(face):1, ]), axes = FALSE, col = grey(seq(0, 1, length = 256)), asp = 1)


datasets

An implementation of robust nonnegative matrix factorization (rNMF). The rNMF algorithm decomposes a nonnegative high dimension data matrix into the product of two low rank nonnegative matrices, while detecting and trimming outliers. The main function is rnmf(). The package also includes a visualization tool, see(), that arranges and prints vectorized images.

Yifan Ethan Xu

rNMF

Robust Nonnegative Matrix Factorization

face function

A data matrix containing 192 rows and 168 columns.

face: An Image of a Corrupted Face Image.

Description

Arguments

Format