Instruction input device, instruction input method, program, recording medium, and integrated circuit

摘要

An instruction input device includes: a first direction detection unit detecting the first direction in which the user is looking; a second direction detection unit detecting a second direction in which the user is performing a pointing operation; a gaze position calculation unit calculating a gaze position of the user on the screen; a reference coordinate group calculation unit calculating a reference line in space corresponding to the gaze position and connecting the user and the screen; an offset amount calculation unit calculating a distance of the second direction between the reference line and the input coordinate indicating the user's hand as an offset amount with respect to the gaze position; and a pointer display position calculation unit calculating a position in which a distance of the first screen predetermined direction between the position and the gaze position is the offset amount on the screen.

主权项

1. An instruction input device which calculates a display position of a pointer to be displayed on a two-dimensional screen, based on a pointing operation of movement of a hand of a user in a three-dimensional space, the instruction input device comprising:
a user position detection unit configured to detect a three-dimensional position of the user; an input coordinate detection unit configured to detect, as a three-dimensional input coordinate, a coordinate indicating a three-dimensional position of the hand of the user; a first direction detection unit configured to detect, based on a body posture of the user, a first direction which is determined with respect to a screen vertical direction and is a direction in which the user is looking; a second direction detection unit configured to detect, based on the body posture of the user, a second direction which is determined with respect to a screen horizontal direction and is a direction in which the user is performing the pointing operation; a gaze position calculation unit configured to calculate a gaze position of the user on the two-dimensional screen, based on the three-dimensional position of the user and the first direction; a reference line calculation unit configured to calculate a reference line in a three-dimensional space between the user and the two-dimensional screen, based on the three-dimensional position of the user and the first direction, the reference line being a line corresponding to the gaze position; an offset amount calculation unit configured to (i) calculate, as a reference point, a point from among a plurality of points on the reference line, the reference point being calculated such that a direction between the three-dimensional input coordinate and the reference point is parallel to the second direction, and (ii) calculate a positional relationship between the reference point and the three-dimensional input coordinate as an offset amount with respect to the gaze position in a first screen predetermined direction along the two-dimensional screen; and a pointer display position calculation unit configured to calculate, as the display position of the pointer to be displayed on the two-dimensional screen, a position in which a distance of the first screen predetermined direction between the position and the gaze position is the offset amount on the two-dimensional screen.