| US 7,503,123 B2 | ||
| Surveying apparatus | ||
| Shunji Matsuo, Tokyo (Japan); Homu Takayama, Saitama (Japan); Takanori Yachi, Tokyo (Japan); and Masatoshi Sakurai, Saitama (Japan) | ||
| Assigned to PENTAX Industrial Instruments Co., Ltd., Tokyo (Japan) | ||
| Filed on Jul. 02, 2007, as Appl. No. 11/772,476. | ||
| Claims priority of application No. 2006-183301 (JP), filed on Jul. 03, 2006. | ||
| Prior Publication US 2008/0120855 A1, May 29, 2008 | ||
| Int. Cl. G01C 15/00 (2006.01); G01C 1/04 (2006.01) | ||
| U.S. Cl. 33—290 | 5 Claims |
| 1. A surveying apparatus comprising:
a sighting telescope that is rotatable about a horizontal axis and a vertical axis;
an imaging device that is integrally rotated with said sighting telescope and has an optical axis that is different from the
collimation axis; and
an external orientation parameter calculator that calculates external orientation parameters of stereo images that are obtained
by said imaging device in an erecting observation and in an inverse observation in terms of the position of said optical axis
with respect to said collimation axis, and the sighting directions in the erection observation and in the inverse observation.
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