Finder, marker presentation member, and presentation method of positioning marker for calibration photography
US6915072B2 · kind B2 · utility
18Cited by
11References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2003 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Oct 17, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/218
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A finder apparatus which is used together with a photographing apparatus presents a marker for positioning for setting relative positions of the photographing apparatus and an object for calibration so as to be visually recognizable by an operator in a finder configured to present an image of a subject so as to be visually recognizable by the operator, when photographing the object for calibration including at least one of a known shape and a known surface attribute in order to acquire parameters of a photographing optical system of the photographing apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.