Erratum to “Tree Filtering: Efficient Structure-Preserving Smoothing With a Minimum Spanning Tree” [Feb 14 555-569]

In the above-named article [ibid., vol. 23, no. 2, pp. 555-569, Feb. 2014], the University in the affiliation of L. Bao, Y. Song, and Q. Yang is incorrect. It should read as follows: L. Bao, Y. Song, and Q. Yang are with the Department of Computer Science, City University of Hong Kong, Hong Kong 999077, China (e-mail: linchaobao@gmail.com; dynamicstevenson@gmail.com; qiyang@cityu.edu.hk).