Two-view autostereoscopic display independent of differences of interocular distance and viewing condition

Abstract

We have previously proposed the parallax barrier autostereoscopic display with eye tracking control. This display realized a wide viewing area. However, the previous method simplifies the process by using the average interocular distance and composing images corresponding to the center position of both eyes. As a result, crosstalk caused by individual differences in interocular distance and changes in viewing condition, such as facial tilt and rotation, was occurred. The crosstalk caused by individual differences in interocular distance is an important factor that must be eliminated. Therefore, we propose the method to compose a parallax image by using positions of both eyes to expand the viewing zone. We use the black images to the crosstalk subpixels, which can be determined from the positions of each eye and achieves more comfortable stereoscopic viewing. To verify the effectiveness of the proposed method, we constructed the prototype 3D display using the parallax barrier with 50% aperture ratio and confirmed the wide viewing area with the crosstalk ratio of less than 5%. We can achieve an autostereoscopic display that has bright and high-quality stereoscopic image and independent of individual differences in interocular distance and changes in viewing condition.