Calibration Accuracy and Reconstruction Accuracy of Stereovision System

Abstract

Error of stereovision reconstruction comes from feature extraction, correspondence and calibration. This paper is focused on investigation of the relation between reconstruction accuracy and calibration accuracy of a stereovision. A model of stereovision system is established, which consists of two cameras configured with their coordinate not paralleled. An array of points in the common view field of the two cameras is projected onto the image planes of the left and right cameras respectively and forms the left image and right image. After changing the calibration parameters of the stereovision system, including intrinsic parameters of the cameras and their relative position and pose, the array of points are reconstructed and compared with their original positions. The main factors affecting the reconstruction errors are discussed.