Design And Implement Of Virtual Scene Render System In Virtual Studio

The virtual studio system can integrate the scene video and the three-dimensional graph produced by computer in real-time. It can break through the space-time limit of traditional studio scene about production and design, combine the real character with virtual background freely, expose perfectly the television programmer's extraordinary creativity, improve the quality and the efficiency of the television program creation, and reduce the cost of the program manufacture.Currently, the mature commercial virtual studio system which developed on the basis of independent workstation platform is extremely expensive. It will cost many to purchase virtual studio system for the middle or small scaled television station. Thus, it has a fairly bright future for utilization to develop a low-cost and practical virtual studio system. The virtual studio system based on PC is cheap and flexible to control. It can satisfy the requirement of program manufacture for the middle or small scaled television station. Therefore, the virtual studio system research using the PC machine realization has become hotspot now.Under this background, this thesis's research, which based on old virtual studio system theory, is focus primarily on the design and implement of virtual scene render system in virtual studio system which based on PC machine. First, this thesis expounds theoretically significance and the principle of work and the pivotal technologies of virtual studio system as well as merit and flaw of the existing virtual studio system. It makes sure project that developing virtual studio system based on Direct3D technology on PC machine. Next, this thesis has conducted the thorough research to virtual scene render technology in virtual studio system. Meanwhile, it has introduced the Direct3D technology in detail.This thesis chooses Direct3D as develop platform, and uses visual C++ 7.0 development kit as develop tool, and adopts the oriented-object design method to develop the system. And it has carry out the overall design to virtual scene render system in according to the workflow from the whole to the part. The thesis has realized concretely virtual scene render system which involves that handling event, initialization, preprocessing of scene data, management of scene data, management of virtual camera, scene render and outputting image data. The virtual scene render system has provided the good function service for virtual studio system.