Title:
MAP INFORMATION UPDATE METHOD, LANDMARK GENERATION METHOD, AND FEATURE POINT DISTRIBUTION ADJUSTMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2021/235458
Kind Code:
A1
Abstract:
This map information update method comprises: a map information acquisition step (S20) for acquiring map information; an observation data acquisition step (S30) for acquiring landmark observation positions indicating the positions of one or more landmarks in a captured image; an additional step (S40) for generating additional map information by adding information related to the landmark observation position to the map information and updating the map information acquired in the map information acquisition step (S20) to the additional map information; a prediction step (S50) for calculating, by using a prediction inference engine including a trained prediction neural network, prediction map information, on the basis of the map information updated in the additional step (S40), and updating the map information to prediction map information; and an update step (S60) for calculating updated map information for the map information updated in the prediction step (S50) by using a gradient method, and updating the map information to the updated map information.
Inventors:
TANAKA TETSUYA
SASAGAWA YUKIHIRO
SASAGAWA YUKIHIRO
Application Number:
PCT/JP2021/018878
Publication Date:
November 25, 2021
Filing Date:
May 18, 2021
Export Citation:
Assignee:
SOCIONEXT INC (JP)
International Classes:
G06T7/00; G06T7/70
Foreign References:
| JP2019121365A | 2019-07-22 | |||
| JP2015515655A | 2015-05-28 | |||
| JP2013537995A | 2013-10-07 |
Other References:
RYOSUKE ICHIKARI, TAKAHIRO NAGAKARI, YUUKI TSUMURA, KAZUHIRO KITAMURA, FUMIHISA SHIBATA, HIDEYUKI TAMURA: "Rehearsal Path Method: A Marker-less Camera Tracking Method Aiming for Robustness to the Real World", TRANSACTIONS OF THE VIRTUAL REALITY SOCIETY OF JAPAN, vol. 17, no. 3, 30 September 2012 (2012-09-30), pages 241 - 252, XP055875445, ISSN: 1344-011X, DOI: 10.18974/tvrsj.17.3_241
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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