A practical spherical mirror omnidirectional camera

Author

Ohte, Akira ; Tsuzuki, Osamu ; Mori, Koji

Author_Institution

Yokogowa Electr. Corp., Tokyo

fYear

2005

fDate

Sept. 30 2005-Oct. 1 2005

Firstpage

8

Lastpage

13

Abstract

A practical omnidirectional camera consisting of one spherical mirror, a mirror supporting structure and a mega pixel digital imaging system has been developed. The camera can view a field of 360 degrees horizontally and 135 degrees vertically. We have analyzed the image forming and depth of field characteristics of the spherical mirror and, for comparison, a hyperboloidal mirror. Advantages of the spherical mirror are its large field of view, good focus over the entire field, simple construction, and low manufacturing cost. Demerits of the mirrors are also evaluated, and practical limitations are described. We have also developed image processing software in which a circular image is converted to desired images in real time. Several prototype cameras have been developed

Keywords

cameras; computer vision; mirrors; circular image; field depth characteristics; image conversion; image forming characteristics; image processing software; mega pixel digital imaging system; spherical mirror omnidirectional camera; Costs; Digital cameras; Digital images; Focusing; Image analysis; Image converters; Image processing; Manufacturing; Mirrors; Pixel;

fLanguage

English

Publisher

ieee

Conference_Titel

Robotic Sensors: Robotic and Sensor Environments, 2005. International Workshop on

Conference_Location

Ottawa, Ont.

Print_ISBN

0-7803-9378-3

Type

conf

DOI

10.1109/ROSE.2005.1588328

Filename

1588328