A Robotic Pan and Tilt 3-D Target Tracking System by Data Fusion of Vision, Encoder, Accelerometer, and Gyroscope Measurements. - Tae-Il Kim; Wook Bahn; Chang-hun Lee; Tae-Jae Lee; Byung-Moon Jang; Sang-Hoon Lee; Min-Wug Moon; Dong-Il Cho (ICIRA (2), 2012)