US 12,174,690 B2
Information processing device, method, product, and system for calculation of reliability of estimation value of number of present objects with high accuracy
Arika Fukushima, Kawasaki Kanagawa (JP); Takufumi Yoshida, Funabashi Chiba (JP); Koichi Kondo, Kawasaki Kanagawa (JP); and Shuuichiro Imahara, Kawasaki Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Infrastructure Systems & Solutions Corporation, Kawasaki (JP)
Filed by KABUSHIKI KAISHA TOSHIBA, Tokyo (JP); and TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION, Kawasaki (JP)
Filed on Aug. 29, 2022, as Appl. No. 17/822,920.
Claims priority of application No. 2022-044222 (JP), filed on Mar. 18, 2022.
Prior Publication US 2023/0297455 A1, Sep. 21, 2023
Int. Cl. G06F 11/07 (2006.01)
CPC G06F 11/0751 (2013.01) [G06F 11/0721 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An information processing device comprising:
one or more hardware processors configured to function as:
a derivation unit to derive a constraint expression obtained by substituting an observation value for a term of an observation value variable included in an error model, the observation value being an observation value of a number of first present objects observed by one or more sensors disposed in at least part of one or more areas, deriving of the constraint expression being performed for each of the one or more sensors, the error model representing correspondence between
a number of second present objects in a first observation range of the sensor represented by the observation value variable of the observation value and an error term related to an assumed detection error range of the sensor, and
a number of third present objects in a second observation range of the sensor represented by a variable indicating a number of fourth present objects in an observation unit space determined based on the second observation range of the sensor and a range of each of the one or more areas;
a range calculation unit to calculate a possible range of a number of fifth present objects in each of the one or more areas by using the constraint expression; and
a reliability calculation unit to calculate, by using the possible range, reliability of an estimation value of the number of the fifth present objects for each of the one or more areas without using the estimation value.