Hybrid Tiled Display System Combining Distributed Rendering and Streaming

Abstract

A tiled display can be defined as a system in which a single large display screen is connected to several clustered computers. Conventionally, two methods have been adopted to generate a large display screen. The first method utilizes image streaming, whereas the second uses distributed rendering of three-dimensional (3D) model data. Because of the 2D nature of the image-streaming method, it cannot be used to establish a 3D virtual environment and rotational transformation in-depth dimension. In comparison, the distributed rendering method functions within a singular virtual world. In this study, a hybrid distributed rendering system (HDRS) is proposed that consolidates the distributed rendering and image streaming methods, thereby overcoming the disadvantages of each. HDRS consists of master and slave servers on an OpenSG scene-graph platform to integrate the distributed-rendering and image-streaming methods. An independent media server is used to transmit synchronized texture data in parallel. For bandwidth efficiency, the media server deploys an adaptive scaled image based on the depth and position information of a plane. As a result, video frames displayed in a 3D environment can undergo geometric transformations such as rotation, scaling, and translation-enabling compatibility with interaction techniques.