基于立体视觉的立体拍摄参数自动获取方法

摘要

According to the existing difficulties of parameter adjustment in taking pictures and the problems of how to keep two cameras cooperating coordination and coherence in the existing 3D-camera, this paper presents an automatic acquisition method of stereo shooting parameters based on sterescopic vision. The method makes full use of the ability of panoramic 3D-camera made of four Omnidirectional Vision Sensors(ODVS) to obtain panoramic stereo images and get the desired convergence point, distance, focal length, aperture factor and other parameters automatically through Three-Dimensional ( 3D ) image processing technology. Experimental results show that the proposed method can effectively guarantee consistency of the 3D photographic parameters of focal length,shooting direction,shooting angle,3D depth and so on,solve the coordinating difficulties of two cameras’ shooting action and the adjustment of 3D depth parameters during 3D shooting,achieve capturing 3D panoramic video and 3D close-up video and shooting 3D close-up video automatically by panoramic points controlled on the monitor at the same time.%现有的3D摄像机在立体拍摄过程中参数调整困难，难以保证左右2台摄像机动作的协调性和一致性。针对该问题，提出一种基于立体视觉的立体拍摄参数自动获取方法。由4台全方位视觉传感器构成的全景3D摄像机获取全景立体图像，通过立体图像处理技术自动获取立体拍摄所需要的汇聚点位置、拍摄距离、焦距以及光圈系数等参数。实验结果表明，该方法能有效保证焦距、拍摄方向、拍摄角度和3D深度等3D拍摄参数的一致性，解决3D拍摄过程中2台摄像机在拍摄动作以及立体景深参数调整等协调难的问题，在拍摄3D全景视频图像的同时进行3D特写视频图像的拍摄，实现在显示器上全景点控的自动3D特写视频图像拍摄。