Real-Time Tiled Multi-projector Autostereoscopic Display Algorithm for Dual-view 3D Video Files

To display the dual-view 3D video files, this paper presents a real-time tiled multi-projector autostereoscopic display algorithm based on the Client/Server structure and the sort-last distributed rendering scheme. First, the dual-view 3D video is displayed in a full screen mode on the server. Second, the dual-view images are screen captured at frames per second of more than 25 and distributed to all rendering clients. Then, a GPU-based image processing technique is utilized to split each HSBS or Half-OU image into two single-view sub-images according to the tiled parameters, and to resize the resolution by bilinear interpolation and generate slanted stripe images through a single-pass rendering process. Lastly, after performing the geometric calibration and luminance correction, these images are interleaved to provide the autostereoscopic vision on the optical display screen. The projection system, which is equipped with a front-projection screen that covers an area of 360 × 160 square centimeters and 24 projectors with a two-dimensional projection resolution of 3584 × 1536 pixels, can provide glasses-free stereoscopic vision at 24 frames per second. Furthermore, it is verified that the autostereoscopic display reaches the optimum when the slanted degree of stripes is 10°.