Title:
DISTANCE IMAGE CAPTURING DEVICE AND DISTANCE IMAGE CAPTURING METHOD USING DISTANCE IMAGE CAPTURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/178920
Kind Code:
A1
Abstract:
This distance image capturing device (1) comprises a light source unit (2) for emitting light pulses, a light reception unit (3) comprising a distance image sensor having a plurality of pixels arranged in a two-dimensional matrix, and a distance image processing unit (4) for determining the distance to a subject in a space being photographed on the basis of the amount of charge distributed in a predetermined fixed number of charge distributions. The distance image processing unit acquires, as a single set, at least two charge amounts accumulated by a charge accumulation unit at different numbers of charge distributions (H, L) and, on the basis of the result of comparing a first charge amount (QH2, QH3) that is the charge amount accumulated at the greater number of charge distributions (H) and a predetermined threshold (Vth), selects, as the charge amount to use to determine the distance, the first charge amount (QH2, QH3) or a second charge amount (QL2, QL3) that is the acquired charge amount in the set that was accumulated at the lower number of charge distributions (L).
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Inventors:
WATANABE TAKASHI (JP)
AKAHORI TOMOYUKI (JP)
AKAHORI TOMOYUKI (JP)
Application Number:
PCT/JP2019/008199
Publication Date:
September 10, 2020
Filing Date:
March 01, 2019
Export Citation:
Assignee:
BROOKMAN TECH INC (JP)
International Classes:
G01S17/89; H04N5/374
Domestic Patent References:
| WO2016129410A1 | 2016-08-18 |
Foreign References:
| JPS646449B2 | 1989-02-03 | |||
| JP2016095234A | 2016-05-26 | |||
| JP2018185179A | 2018-11-22 | |||
| JP2018207413A | 2018-12-27 |
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (JP)
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