| 摘要 |
Provided are a line-of-sight measurement device and method, which perform automatic calibration of line-of-sight measurement for distance-gazing users, including pilots of electric trains, automobiles, ships, etc. The device is provided with: an optical axis-calculating means for calculating the optical axes of both the left and right eyeballs when viewing at least two distant points; a shift-calculating means for calculating, with the visual axes (lines of sight) of the left and right eyes during distance-gazing being parallel as a constraint, the shift between the optical axes and the visual axes for both the left and right eyes; and a fixation point-calculating means for calculating the user's fixation point on the basis of the shifts between the optical axes and the visual axes. For the constraint here, the magnitude of the vector product of the respective vectors of the left and right eye visual axes is 0 or the inner product of the respective unit vectors of the left and right eye visual axes is 1. |
