Error Analysis of Pure Rotation-Based Self-Calibration

Self-calibration using pure rotation is a well-known technique and has been shown to be a reliable means for recovering intrinsic camera parameters. However, in practice, it is virtually impossible to ensure that the camera motion for this type of self-calibration is a pure rotation. In this paper, we present an error analysis of recovered intrinsic camera parameters due to the presence of translation. We derived closed-form error expressions for a single pair of images with nondegenerate motion; for multiple rotations for which there are no closed-form solutions, analysis was done through repeated experiments. Among others, we show that translation-independent solutions do exist under certain practical conditions. Our analysis can be used to help choose the least error-prone approach (if multiple approaches exist) for a given set of conditions.

• Type: Conference
• Year: 2001
• Where: ICCV
• Authors: Leslie Wang, Sing Bing Kang, Heung-Yeung Shum, Guangyou Xu
• Keywords: Camera Motion, Certain Practical Conditions, Closed-form Error Expressions, Computer Vision, ICCV 2001, Intrinsic Camera Parameters, Pure Rotation