IMAGE PLAYBACK DEVICE AND DISPLAY DEVICE
An image playback device includes a playback portion which plays back content data to make a video stereoscopically viewed by means of video data including first and second images for first and second view points, respectively; a setting portion which sets a playback speed for playing back the content data; and an adjuster which adjusts parallax information about parallax between the first and second images in response to the playback speed set by the setting portion.
1 . An image playback device, comprising:
a playback portion which plays back content data to make a video stereoscopically viewed by means of video data including a first image for a first view point and a second image for a second view point;
a setting portion configured to set a playback speed for playing back the content data; and
an adjuster configured to adjust parallax information about parallax between the first and second images in response to the playback speed set by the setting portion.
2 . The image playback device according to claim 1 , wherein
the adjuster changes at least one perception volume of a pop-up volume and a deep-in volume of an object in the video data, which are perceived by a viewer viewing the content data, in response to the playback speed.
3 . The image playback device according to claim 2 , wherein
the setting portion selectively sets a first mode for playing back the content data at a first speed, and a second mode for playing back the content data at a second speed which is faster than the first speed, and
the adjuster adjusts the parallax information so that a change amount of the perception volume in the second mode is less than a change amount of the perception volume in the first mode.
4 . The image playback device according to claim 3 , wherein
the adjuster shifts at least one of the first and second images.
5 . The image playback device according to claim 3 , wherein
the adjuster lessens the first and second images.
6 . The image playback device according to claim 3 , wherein
the adjuster changes at least one of display positions of the object in the first and second images.
7 . The image playback device according to claim 6 , wherein
the object includes a plurality of objects, and
the adjuster selects an object to change the display position of the object based on the pop-up volume from a display surface to display the content data, the deep-in volume from the display surface, a display position of the object on the display surface and a display size of the object.
8 . The image playback device according to claim 6 , wherein
the adjuster includes:
a segmentation portion configured to divide the first and second images into image segments, respectively;
an image segment identification portion configured to identify image segments, which contribute to display of the object, among the image segments; and
a changing portion configured to change a display position of image data included in the image segments which contribute to the display of the object.
9 . The image playback device according to claim 3 , wherein
the adjuster adjusts the parallax information so as to reduce an absolute value of a difference between a reference convergence angle of the first and second view points with respect to a display surface, on which the content data are displayed, and a convergence angle of the first and second view points with respect to the object included in the first and second images.
10 . The image playback device according to claim 3 , wherein
the parallax information includes information about a difference between display positions of an object in the first and second images, and
the adjuster adjusts the parallax information so as to reduce the difference in the display positions of the object between the first and second images.
11 . The image playback device according to claim 3 , wherein
the setting portion sets a third mode for playing back the content data at a third speed which is faster than the second speed, and
the adjuster outputs one of the first and second images in the third mode.
12 . A display device, comprising:
a playback portion which plays back content data to make a video stereoscopically viewed by means of video data including a first image for a first view point and a second image for a second view point;
a display portion configured to display the video data;
a setting portion configured to set a playback speed for playing back the content data; and
an adjuster configured to adjust parallax information about parallax between the first and second images in response to the playback speed set by the setting portion.
13 . The display device according to claim 12 , wherein
the setting portion selectively sets a first mode for playing back the content data at a first speed, a second mode for playing back the content data at a second speed, which is faster than the first speed, and a third mode for playing back the content data at a third speed, which is faster than the second speed, and
the adjuster causes the display portion to display only one of the first and second images in the third mode.