Performance improvement for additive light field displays with weighted simultaneous algebra reconstruction technique and tracked views

Additive light field displays are transparent autostereoscopic three-dimensional displays without backlights, thus suitable for augmented reality applications. However, when the parallax between viewpoint images becomes large with the increase of viewing angle, the optimization algorithm is hard to handle too many dissimilarities evenly on all viewpoints, resulting in poor reconstructed quality. This paper presents an additive light field display using the weighted simultaneous algebraic reconstruction technique with viewing angle-dependent weight distribution functions. We constrain the optimization to deliver a reconstructed light field of high image quality for viewpoints of large weight. When the proposed method is applied, with a wide dynamic viewing angle of 57 degrees x 43 degrees, the tracked views' peak signal-to-noise ratio exceeds 30 dB with only two additive display layers.