Hierarchical approach to weight equations in face tracking and recognition framework. - Hisayoshi Chugan; Takeshi Shakunaga (FG, 2013)

Underdetermined Approach to Real-time Face Tracking and Recognition. - Hisayoshi Chugan; Yuki Oka; Takeshi Shakunaga (MVA, 2013)

Challenge to Scalability of Face Recognition Using Universal Eigenface. - Hisayoshi Chugan; Tsuyoshi Fukuda; Takeshi Shakunaga (PSIVT, 2015)