Varying Focal Length Self-Calibration and Pose Estimation from Two Images
نویسندگان
چکیده
This paper presents a self-calibration and pose estimation method that uses two cameras which only diier by focal length. The estimation of the rotation and focal lengths is independent of the translation recovery. Unlike most methods, we do not initialize our recovery with the projective camera. Instead we estimate the ego-motion and calibration from 3 homographies. These homographies can be easily obtained from a fundamental matrix or a trifocal tensor.
منابع مشابه
Direct Camera Calibration Using Two Concentric Circles from a Single View
This paper describes a new camera calibration method based on ellipses properties. We demonstrate that the calibration is possible using one view of two concentric circles of known radii. Based on the estimation of the projected circle centers and on the ellipses properties as the perspective projection of circles, our algorithm estimates both the focal length and the pose and orientation of th...
متن کاملCamera Calibration with Two Arbitrary Coplanar Circles
In this paper, we describe a novel camera calibration method to estimate the extrinsic parameters and the focal length of a camera by using only one single image of two coplanar circles with arbitrary radius. We consider that a method of simple operation to estimate the extrinsic parameters and the focal length of a camera is very important because in many vision based applications, the positio...
متن کاملSelf-Calibration of Zooming Cameras Observing an Unknown Planar Structure
In this paper, we propose a new self-calibration technique for cameras with changing zoom observing only a planar structure. The method does not need any metric or topologic knowledge about the structure since it is based on the estimation of the collineations existing between several views of a plane (thus only image correspondences are needed). The constraints existing between all the colline...
متن کاملCamera Calibration Using Two Concentric Circles
We present a simple calibration method for computing the extrinsic parameters (pose) and intrinsic parameters (focal length and principal point) of a camera by imaging a pattern of known geometry. Usually, the patterns used in calibration algorithms are complex to build (three orthogonal planes) or need a lot of features (checkerboard-like pattern). We propose using just two concentric circles ...
متن کاملCamera Calibration from Surfaces of Revolution
This paper addresses the problem of calibrating a pinhole camera from images of a surface of revolution. Camera calibration is the process of determining the intrinsic or internal parameters (i.e., aspect ratio, focal length and principal point) of a camera, and it is important for both motion estimation and metric reconstruction of 3D models. In this paper a novel and simple calibration techni...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998