Colorblind-friendly Halftoning. - S. K. Felix Yu; Yuk-Hee Chan; Daniel Pak-Kong Lun; Chi Wang Jeffrey Chan; Kai Wang Kenneth Li (EUSIPCO, 2018)

A spatial domain secret image embedding technique with image authentication feature. - S. K. Felix Yu; Zi-Xin Xu; Yuk-Hee Chan; Daniel Pak-Kong Lun (APSIPA, 2019)

Self-embedding reversible color-to-grayscale conversion with watermarking feature. - S. K. Felix Yu; Yuk-Hee Chan; Kenneth Kin-Man Lam; Daniel Pak-Kong Lun (Signal Process. Image Commun., 2023)