The following publications are possibly variants of this publication:
- Learning Quaternion Graph for Color Face Image Super-ResolutionLicheng Liu, C. L. Philip Chen, Shutao Li. icip 2019: 2846-2850 [doi]
- Color face recognition based on quaternion matrix representationYanfeng Sun, Shangyou Chen, Baocai Yin. prl, 32(4):597-605, 2011. [doi]
- Hallucinating Compressed Face ImagesChih-Yuan Yang, Sifei Liu, Ming-Hsuan Yang 0001. ijcv, 126(6):597-614, 2018. [doi]