Title:
CALIBRATION DEVICE, CALIBRATION CHART, CHART PATTERN GENERATION DEVICE, AND CALIBRATION METHOD
Document Type and Number:
WIPO Patent Application WO/2018/235163
Kind Code:
A1
Abstract:
This calibration device performs calibration using a captured image of a chart 200 that comprises a plurality of flat surfaces forming a predetermined angle θ therebetween. An image capture device 12 simultaneously captures an image of a chart pattern formed on each flat surface of the chart 200. The chart pattern formed on each flat surface of the chart 200 increases in size with distance from the image capture plane, as shown in (a), so that feature points of patterns are uniformly distributed within the captured image, as shown in (b).
Inventors:
MYOKAN YOSHIHIRO (JP)
INADA TETSUGO (JP)
MURAMOTO JUNICHI (JP)
INADA TETSUGO (JP)
MURAMOTO JUNICHI (JP)
Application Number:
PCT/JP2017/022692
Publication Date:
December 27, 2018
Filing Date:
June 20, 2017
Export Citation:
Assignee:
SONY INTERACTIVE ENTERTAINMENT INC (JP)
International Classes:
G06T7/80; H04N5/232
Foreign References:
| JP2004213332A | 2004-07-29 | |||
| JP2004341616A | 2004-12-02 | |||
| JP2007026423A | 2007-02-01 | |||
| EP0999518A1 | 2000-05-10 |
Other References:
ZHENGYOU ZHANG: "A Flexible New Technique for Camera Calibration", MICROSOFT RESEARCH TECHNICAL REPORT, MSR-TR-98-71, 2 December 1998 (1998-12-02)
KENICHI KANETANI: "Mathematical Principles of Camera Calibration - How the Best Grid Pattern Is Derived", MATHEMATICAL SCIENCE, October 1993 (1993-10-01), pages 56
C. HARRISM. STEPHENS: "A combined corner and edge detector", PROCEEDINGS OF THE 4TH ALVEY VISION CONFERENCE, 1988, pages 147 - 151
S. GARRIDO-JURADO ET AL.: "Automatic generation and detection of highly reliable fiducial markers under occlusion", PATTERN RECOGNITION, vol. 47, no. 6, June 2014 (2014-06-01), pages 2280 - 2292, XP055601771, DOI: 10.1016/j.patcog.2014.01.005
KENICHI KANETANI: "Mathematical Principles of Camera Calibration - How the Best Grid Pattern Is Derived", MATHEMATICAL SCIENCE, October 1993 (1993-10-01), pages 56
C. HARRISM. STEPHENS: "A combined corner and edge detector", PROCEEDINGS OF THE 4TH ALVEY VISION CONFERENCE, 1988, pages 147 - 151
S. GARRIDO-JURADO ET AL.: "Automatic generation and detection of highly reliable fiducial markers under occlusion", PATTERN RECOGNITION, vol. 47, no. 6, June 2014 (2014-06-01), pages 2280 - 2292, XP055601771, DOI: 10.1016/j.patcog.2014.01.005
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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