Video processing device, video processing method and recording medium

A video processing method comprising:

• outputting a test pattern to a display capable of displaying stereoscopically, the test pattern being indicative of whether a viewer is substantially at a center of a viewing area in which a video is viewed stereoscopically, and
• adjusting the viewing area according to a viewing area adjustment signal inputted from outside,
• wherein the test pattern comprises a first, second, third, fourth, fifth, and sixth parallax image corresponding to a respective first, second, third, fourth, fifth, and sixth viewing point arranged in a horizontal direction,
• the third parallax image and the fourth parallax image comprise a first mark,
• the first parallax image and the sixth parallax image comprise a second mark different from the first mark, and
• the second parallax image and the fifth parallax image comprise neither the first mark nor second mark.

A non-transitory computer recordable medium configured to:

• store a test pattern indicative of whether a viewer is substantially at a center of a viewing area in which a video is viewed stereoscopically,
• wherein the test pattern comprises a first, second, third, fourth, fifth, and sixth parallax image corresponding to a respective first, second, third, fourth, fifth, and sixth viewing point arranged in a horizontal direction,
• the third parallax image and the fourth parallax image comprise a first mark,
• the first parallax image and the sixth parallax image comprise a second mark different from the first mark, and
• the second parallax image and the fifth parallax image comprise neither the first mark nor second mark.