基于环视图象的数字相机内参数自定标方法

描述了一种适用于IBR系统的数字相机内参数自定标方法。该方法基于跟踪机机旋转得到的图象系列的特征匹配点以，而不需要标定物。认定在相机旋转过程中，其光学中心是稳定不变的，也即图象中心是固定的，可以事先定标；但容许相机的焦距在各幅图象间有变化，利用真实图象序列进行了实验验证，表明该方法能鲁棒地估算相机内参数。

A Self-calibration Method of the Intrinsic Parameters of Digital Cameras Based on Panoramic Images

The paper describes a simple and practical self-calibration method of estimating the intrinsic parameters of digital cameras for image-based rendering system. This method is based on tracking the image features through a sequence of images while the camera undergoes pure rotation, no a special calibration object required. We presume the optical center of the camera is changeless during its movements, then the image center can be estimated beforehand, and we suppose the camera change its focal length while rotating. We give experimental results using real image sequences, which illustrate the robust performance of the method.