Generalized integer transform based reversible watermarking algorithm using efficient location map encoding and adaptive thresholding. - Chi-Man Pun; Ka-Cheng Choi (Computing, 2014)

Application of a generalized difference expansion based reversible audio data hiding algorithm. - Ka-Cheng Choi; Chi-Man Pun; C. L. Philip Chen (Multim. Tools Appl., 2015)

Robust lossless digital watermarking using integer transform with Bit plane manipulation. - Ka-Cheng Choi; Chi-Man Pun (Multim. Tools Appl., 2016)

Adaptive image encryption for high capacity reversible data hiding. - Ka-Cheng Choi; Chi-Man Pun (DSC, 2017)

An Open Tourism Mobile Platform with Personalized Route Planning and Voice Recognition. - Yapeng Wang; Chan-Tong Lam; Ka-Cheng Choi; Benjamin K. Ng; Ka Meng Siu; Philip Lei; Xu Yang 010 (ICIT, 2021)

Exact Transient Analysis on LRU Cache Startup for Internet of Things. - Kin-Yeung Wong; Alan Kai-Hau Yeung; Ka-Cheng Choi; Philip Lei; Chan-Tong Lam (ICIT, 2021)

Reversible Data Hiding in Encrypted Images Combined with Chaotic System Based on Pixel Prediction and Bit Plane Compression. - Yijia Dai; Ka-Cheng Choi (ICDIP, 2023)

Indoor Item Finding based on RSSI and RFID Tags. - Soi Hou Tam; Ka-Cheng Choi (CNIOT, 2024)