The Robotics Institute

Carnegie Mellon Robotics Institute

Copyright notice: This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.

Abstract

To model the way that cameras project the three-dimensional world into a two-dimensional image we need to know the camera's image center. First-order models of lens behavior, such as the pinhole-camera model and the thin-lens model, suggest that the image center is a single, fixed, and intrinsic parameter of the lens. On closer inspection, however, we find that there are many possible definitions for image center. Most image centers do not have the same coordinates and, moreover, move as lens parameters are changed. We present a taxonomy that includes 15 techniques for measuring image center. Several techniques are applied to a precision automated zoom lens, and experimental results are shown.

Notes

Associated Center(s) / Consortia: Vision and Autonomous Systems Center

Associated Lab(s) / Group(s): Calibrated Imaging Lab

Number of pages: 10

Text Reference

Reg Willson and Steven Shafer, "What is the Center of the Image?," Journal of the Optical Society of America A, Vol. 11, No. 11, November, 1994, pp. 2946 - 2955.

BibTeX Reference

@article{Willson_1994_4779,
   author = "Reg Willson and Steven Shafer",
   title = "What is the Center of the Image?",
   journal = "Journal of the Optical Society of America A",
   pages = "2946 - 2955",
   month = "November",
   year = "1994",
   volume = "11",
   number = "11",
}

The Robotics Institute

Menu