Adjustable viewpoint allocation for enhancing the viewing angle and reducing the crosstalk in super multi-view display.

In this Letter, we propose an adjustable viewpoint allocation method with forward and backward ray tracing to enhance the viewing angle and reduce the crosstalk in super multi-view (SMV) display. The synthetic image (SI) is initially calculated by backward ray tracing according to the viewing distance and the viewpoint interval. Forward ray tracing is then performed on the result of the viewpoint allocation to correct the deviation between the actual and the ideal viewpoint positions. Optical experiments are performed to verify the effectiveness of the proposed method. The results show that the proposed method effectively suppresses the crosstalk between viewpoints and eliminates artifacts in adjacent viewing areas within the ideal viewing angle, thereby enhancing the actual viewing angle. Meanwhile, due to the ability of reallocating information on the SI, the proposed method can achieve varying information density from different views. It is expected that our proposed method could be widely used in light field display to realize high quality display in the future.