虚拟电视广告系统的基本框架与研究

发布时间：2018-08-11 16:02

【摘要】： 本文设计并实现了一个应用在足球比赛直播中的虚拟电视广告系统。该系统能够在足球比赛图像中的特定位置安插虚拟广告。首先利用Hough变换和数学形态学方法提取直线,求直线的交点作为特征点。然后用提取到的特征点和它们对应的世界坐标对摄像机进行标定,用最小二乘法求解线性方程组得到透视变换矩阵。最后由透视变换矩阵和特定的广告安插位置的世界坐标计算出虚拟广告的图像坐标范围,对这个范围中的每个点三维重建,计算他们的世界坐标,将每个点的像素值替换为广告图像中对应位置的像素值。实验结果表明,本系统能够较为快速、有效的在足球比赛图像中的特定位置安插虚拟广告。
[Abstract]:This paper designs and implements a virtual television advertising system which is used in football match live broadcast. The system can place virtual advertisements in the image of football match. First, the Hough transform and mathematical morphology are used to extract the straight line, and the intersection point of the line is obtained as the feature point. Then the camera is calibrated with the extracted feature points and their corresponding world coordinates, and the perspective transformation matrix is obtained by solving the linear equations by the least square method. Finally, the image coordinate range of the virtual advertisement is calculated from the perspective transformation matrix and the world coordinate of the specific advertisement placement position, and the 3D reconstruction of each point in this range is carried out, and their world coordinates are calculated. Replaces the pixel value of each point with the pixel value of the corresponding position in the advertisement image. The experimental results show that the system can put virtual advertisement in the special position of football match image more quickly and effectively.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2008
【分类号】：TN948.4

【引证文献】