About the Authors

Liang-Jian Deng

Affiliation School of Mathematical Sciences/Research Center for Image and Vision Computing, University of Electronic Science and Technology of China, Chengdu, Sichuan, P. R. China

Ting-Zhu Huang

tingzhuhuang@126.com

Affiliation School of Mathematical Sciences/Research Center for Image and Vision Computing, University of Electronic Science and Technology of China, Chengdu, Sichuan, P. R. China

Xi-Le Zhao

Affiliation School of Mathematical Sciences/Research Center for Image and Vision Computing, University of Electronic Science and Technology of China, Chengdu, Sichuan, P. R. China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LJD TZH XLZ. Performed the experiments: LJD. Analyzed the data: LJD TZH. Contributed reagents/materials/analysis tools: LJD XLZ. Wrote the paper: LJD. Gave the modified suggestion and supervised the project: TZH XLZ.