Title:
CALIBRATION DEVICE, CALIBRATION METHOD, AND CALIBRATION CHART DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/138646
Kind Code:
A1
Abstract:
In this calibration chart device 20, a peak detection unit 32 detects for each pixel a marker position at which a pixel value is a maximum, the marker position being detected from: a plurality of infrared images obtained by successively moving markers, having a unimodal distribution of infrared radiation amount in the movement direction, in a first direction, and capturing images of the markers at each movement position using an infrared camera IRC; and a plurality of infrared images obtained by successively moving the markers in a second direction different form the first direction, and capturing images of the markers at each movement position using the infrared camera IRC. A calibration processing unit 36 calculates camera parameters by using the marker positions detected for each pixel by the peak detection unit 32. Accordingly, the infrared camera can be easily calibrated.
Inventors:
OYAIZU HIDEKI (JP)
Application Number:
PCT/JP2018/039657
Publication Date:
July 18, 2019
Filing Date:
October 25, 2018
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H04N5/232; G06T7/80; H04N5/33; H04N17/00
Foreign References:
| JP2004128887A | 2004-04-22 | |||
| JP2001285681A | 2001-10-12 | |||
| JPH11337493A | 1999-12-10 | |||
| JP2008202971A | 2008-09-04 |
Attorney, Agent or Firm:
MIYATA, Masaaki et al. (JP)
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