Optimizing Background Subtraction for OST-HMD. - Jae-Woo Kim; Je-Ho Ryu; Seung-Su Ryu; Kang-Kyu Lee; Jong-Ok Kim (ISMAR Adjunct, 2017)

Spatial Frequency Modulation for Display-Camera Communication. - Seung-Su Ryu; Kyu-Ho Lee 003; Ji-Sang Bae; Jong-Ok Kim (ICEIC, 2021)