Apparatus and method for presenting stereoscopic video
Provided is a stereoscopic video presenting apparatus including: an eye movement measurement unit configured to measure an eye movement of each of users viewing the stereoscopic video; a user count determination unit configured to determine the number of users viewing a same stereoscopic video; and a failure state determination unit configured to compare, when the user count determination unit determines that the number of users viewing the same stereoscopic video is plurality, eye movements of a plurality of users to determine a user whose eye movement is in a failure state among the plurality of users.
1. A stereoscopic video presenting apparatus for presenting a stereoscopic video to a user by controlling opening and closing of a left-eye shutter and a right-eye shutter which are included in eyeglasses for stereoscopic viewing worn by the user, in synchronization with a timing to display a left-eye video and a right-eye video, the stereoscopic video presenting apparatus comprising:
an eye movement measurement unit configured to measure an eye movement of each of users viewing the stereoscopic video;
a user count determination unit configured to determine the number of users viewing a same stereoscopic video; and
a failure state determination unit configured to compare, when the user count determination unit determines that the number of users viewing the same stereoscopic video is plurality, eye movements of a plurality of users to determine a user whose eye movement is in a failure state among the plurality of users.
2. The stereoscopic video presenting apparatus according to claim 1 , further comprising
a control change unit configured to present, to the user determined to be in the failure state by the failure state determination unit, only one of the right-eye video and the left-eye video by changing a control method for opening and closing of the left-eye shutter and the right-eye shutter of the eyeglasses worn by the user to a control method for concurrent opening and closing of the left-eye shutter and the right-eye shutter.
3. The stereoscopic video presenting apparatus according to claim 2 , further comprising
a control timing determination unit configured to cause the control change unit to change the control method for opening and closing of the left-eye shutter and the right-eye shutter of the eyeglasses worn by the user determined to be in the failure state by the failure state determination unit to the control method for concurrent opening and closing of the left-eye shutter and the right-eye shutter, at a timing at which an amount of convergence of the eye movement of the user is smaller than a predetermined threshold amount of convergence.
4. The stereoscopic video presenting apparatus according to claim 1 ,
wherein the failure state determination unit is configured to compare amounts of convergence of the eye movements of the plurality of users in a predetermined period to determine, as a user in the failure state who is unable to perceive stereoscopic view, a user whose amount of convergence is smaller than the amounts of convergence of the eye movements of no less than a predetermined number of other users.
5. The stereoscopic video presenting apparatus according to claim 1 ,
wherein the failure state determination unit is configured to compare the amounts of convergence of the eye movements of the plurality of users at the same time to determine, as a user in the failure state who is too close to a display screen showing the right-eye video and the left-eye video, a user whose amount of convergence is greater than the amounts of convergence of the eye movements of any other users by a predetermined value or greater.
6. The stereoscopic video presenting apparatus according to claim 1 ,
wherein the failure state determination unit is configured to compare integrated values of the amounts of convergence of the eye movements of the plurality of users in a same period to determine, as a user in the failure state in which the user is fatigued, a user for whom the integrated value is smaller than the integrated values for any other users by a predetermined value or greater.
7. The stereoscopic video presenting apparatus according to claim 1 ,
wherein the failure state determination unit is configured to compare reaction rates of the eye movements of the plurality of users in a same period to determine, as a user in the failure state in which the user is fatigued, a user for whom the reaction rate is smaller than the reaction rates of any other users by a predetermined value or greater.
8. A stereoscopic video presenting method for presenting a stereoscopic video to a user by controlling opening and closing of a left-eye shutter and a right-eye shutter which are included in eyeglasses for stereoscopic viewing worn by the user, in synchronization with a timing to display a left-eye video and a right-eye video, the stereoscopic video presenting method comprising:
measuring an eye movement of each of users viewing the stereoscopic video;
determining the number of users viewing a same stereoscopic video; and
comparing, when it is determined in the determination that the number of users viewing the same stereoscopic video is plurality, eye movements of a plurality of users to determine a user whose eye movement is in a failure state among the plurality of users.
9. A non-transitory computer-readable recording medium having stored therein a program for causing a computer to execute the stereoscopic video presenting method according to claim 8 .