Pointing-gestures' Angle Differences between a Standing posture and a Sitting posture

We analyze differences of pointing-gestures between standing and sitting postures. We focused the gestures' angle from a relation between the pointing location on the screen and pointing-gestures. Pointing-gestures of a standing posture and a sitting posture were recorded. As an experimental result, angular difference between standing posture and sitting posture is about 7.3 degree. From the result, the relative difference is considered to be influenced by topand-bottom angle of gesture in pointing tiles on the screen. However, gestures' angle differences are not only posture but also other factors. Firstly, we discuss about combination of a base point and an operating point as one of other factors. Secondly, we discuss about selected gesture between upward gestures' angle and downward gestures' angle. As the analysis result, the relative difference is considered to be influenced by top-and-bottom angle of gesture in pointing tiles on the screen.