1. Technical Field
The present invention relates to an image processing device that processes input image data in which image data derived from a plurality of different images is arranged line by line, a projector, and an image processing method.
2. Related Art
As a technique for representing three-dimensional stereoscopic videos in the related art, a technique referred to as a time-sharing method has been proposed in which a display that alternately displays an image for the left eye and an image for the right eye every frame period is combined with shutter glasses that alternately open and close the left-eye shutter and the right-eye shutter in synchronization with a frame to display a stereoscopic video for a user (JP-A-2009-152897). In addition to the time-sharing method, various kinds of methods using stereoscopic glasses, such as an anaglyph method or a polarizing filter method, have been proposed.
As a method of realizing stereoscopic vision with the naked eyes without using glasses, a parallax barrier method and the like have been known (JP-A-2005-266116).
Various studies have been made also on a format of video signals for stereoscopic vision and the transmitting method of the signals. Recently, HDMI (registered trademark) (High-Definition Multimedia Interface) as an interface for so-called digital appliances has been adapted to the transmission of stereoscopic videos, so that it is expected that the market of stereoscopic videos will increase in the future.
As a format of stereoscopic videos, a method of interlacing an image for the left eye and an image for the right eye in units of scanning lines has been proposed. However, JP-A-2009-152897 and JP-A-2005-266116 do not make a study to efficiently resize interlaced stereoscopic video signals. JP-A-2001-075047 discloses an example of rearranging images line by line for interlaced video signals to reconstruct an image for the left eye and an image for the right eye. In such a configuration, however, an increase in memory or circuit scale required to resize an image represented by interlaced video signals is a problem.