Title:
DISTANCE IMAGE CAPTURING DEVICE AND DISTANCE IMAGE CAPTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/158570
Kind Code:
A1
Abstract:
The present invention is a distance image capturing device (1, 101) comprising: a light source unit (2, 102); a light-receiving unit (3, 103) having pixels (321, 421) equipped with a photoelectric conversion element (PD) and a plurality of charge accumulation units (CS1-CS4), and also having a pixel drive circuit (323, 423); a storage unit (44, 144) for storing table information (440, 540) in which corresponding distances to a subject are associated with charge ratios; and a distance image processing unit (4, 104) for determining the measured distance (D) to a subject (OB) using the table information (440, 540) and charge amounts (Q1-Q4) that are respectively accumulated in the plurality of charge accumulation units (CS1-CS4). The distance image processing unit (4, 104) calculates a charge ratio (R) on the basis of the charge amounts (Q1-Q4) respectively accumulated in the plurality of charge accumulation units (CS1-CS4), acquires a corresponding distance (D) corresponding to the calculated charge ratio (R) from the table information (440, 540), and determines the measured distance using the acquired corresponding distance (D).
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Inventors:
HATAKEYAMA KUNIHIRO (JP)
NAKAGOME TOMOHIRO (JP)
NAKAGOME TOMOHIRO (JP)
Application Number:
PCT/JP2022/002193
Publication Date:
July 28, 2022
Filing Date:
January 21, 2022
Export Citation:
Assignee:
TOPPAN INC (JP)
International Classes:
G01C3/06; G01S7/4865; G01S17/894; H04N5/369; H04N5/3745
Domestic Patent References:
| WO2009005098A1 | 2009-01-08 | |||
| WO2019031510A1 | 2019-02-14 |
Foreign References:
| JP2019219400A | 2019-12-26 | |||
| JP2020003250A | 2020-01-09 | |||
| US20180252800A1 | 2018-09-06 | |||
| US20190086521A1 | 2019-03-21 | |||
| JP2021008218A | 2021-01-28 | |||
| JP2021008219A | 2021-01-28 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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