This file contains data of a brain image. It has 217x217 pixels. Gray levels are in the range [0, 255]. In the data file, observations are listed as a 217 x217 matrix. This image has blur involved.
brain
A matrix containing 217x217 pixels.
Yicheng Kang
Kang, Y., Mukherjee, P.S. and Qiu, P. (2018) ``Efficient Blind Image Deblurring Using Nonparametric Regression and Local Pixel Clustering'', Technometrics, 60(4), 522 -- 531, tools:::Rd_expr_doi("10.1080/00401706.2017.1415975").