基于摄像机运动的简单虚拟场景生成

Creation of Simple Virtual Scenes Based on Camera Moving

利用摄像机标定技术和视频融合技术设计了一个基于摄像机运动的简单虚拟场景生成系统。首先对摄像机进行标定,然后利用摄像机的运动参数根据摄像机成像模型计算出3-D实景中特定的位置在2-D视频图像上的映射,最后利用映射结果对虚拟景物进行透视变换,并把它实时融合到视频图像特定位置中形成新的视觉效果,实现了一种类似于虚拟演播室的简单、有效、实用的视频制作新方法。实验表明该方法实时性好、生成的虚拟场景效果逼真。

In this paper, a system creating simple virtual scenes based on camera motion is designed by application of camera calibration and video blending techniques. It firstly calibrates a camera, then computes the projection of a particular location from 3-D real scene to 2-D video image using the camera motion parameters according to a camera imaging model, and finally performs the perspective transformation to virtual objects with projecting results and blend them into the right positions in the video image to form a new visual effect. It provides a new simple, valid and practical method for video making similar to virtual studio system and is experimentally proven satisfactory in real time and the vividness of virtual scenes.