A Data Concealing Technique with Random Noise Disturbance and A Restoring Technique for the Concealed Data by Stochastic Process Estimation. - Tomohiro Fujii; Masao Hirokawa (CoRR, 2019)

Concealing-restoring system for physical layer data: Based on stochastic filtering theory. - Tomohiro Fujii; Masao Hirokawa (Phys. Commun., 2022)

Concealing-Restoring System for Analog Images. - Tomohiro Fujii; Shinsuke Yamamoto; Toshiki Yamasaki; Masao Hirokawa (ICECET, 2023)

On Security Level of Some Secret Keys of Concealing - Restoring System Aimed to BCI/BMI Security. - Tomohiro Fujii; Shinsuke Yamamoto; Toshiki Yamasaki; Masao Hirokawa (ICECET, 2024)