Information processing device, information processing method, and recording medium

Patent metadata

Field	Value
Publication number	US-2026057638-A1
Application number	US-202519289433-A
Country	US
Kind code	A1
Filing date	Aug 4, 2025
Priority date	Aug 22, 2024
Publication date	Feb 26, 2026
Grant date	—

Abstract

An information processing device according to the present disclosure includes: a memory configured to store instructions; and one or more processors configured to execute the instructions to: predict, for each of a plurality of cameras, a trajectory of an object included in at least one of a plurality of target images with reference to the plurality of target images captured by the plurality of cameras; transform each of the plurality of predicted trajectories into reference coordinates; calculate a degree of correlation with another trajectory for each of the plurality of trajectories transformed into the reference coordinates; integrate trajectories having the degree of correlation higher than a predetermined value; calculate parameters for spatially and temporally synchronizing images captured by the plurality of cameras with reference to the integrated trajectory; and transform each of the plurality of trajectories into the reference coordinate with reference to the parameter.

First claim

1 . An information processing device comprising:
a memory configured to store instructions; and one or more processors configured to execute the instructions to: predict, for each of a plurality of cameras, a trajectory of an object included in at least one of a plurality of target images with reference to the plurality of target images captured by the plurality of cameras; transform each of the plurality of predicted trajectories into reference coordinates; calculate a degree of correlation with another trajectory for each of the plurality of trajectories transformed into the reference coordinates; integrate trajectories having the degree of correlation higher than a predetermined value; calculate parameters for spatially and temporally synchronizing images captured by the plurality of cameras with reference to the integrated trajectory; and transform each of the plurality of trajectories into the reference coordinate with reference to the parameter.

2 . The information processing device according to claim 1 , wherein
the one or more processors are further configured to execute the instructions to: predict a trajectory of an object by inputting the target image to a state transition model that predicts a state of the object included in an image using the image as an input; and learn the state transition model using a trajectory integrated.

3 . The information processing device according to claim 1 , wherein
the one or more processors are further configured to execute the instructions to: associate, with the object, identification information for identifying an object included in at least one of the plurality of target images with another object; and refer to the identification information to predict a trajectory of the object.

4 . The information processing device according to claim 1 , wherein
the plurality of cameras includes a camera that captures the object from above, wherein the one or more processors are further configured to execute the instructions to: transform each of the plurality of trajectories into reference coordinates with a target image captured by the camera that captures an image from above as a reference.

5 . The information processing device according to claim 1 , wherein
at least a part of an imaging range of each of the plurality of cameras overlaps at least a part of an imaging range of another camera.

6 . The information processing device according to claim 1 , wherein
the one or more processors are further configured to execute the instructions to: sequentially predict a trajectory of the object with reference to a plurality of target images sequentially captured by each of the plurality of cameras.

7 . The information processing device according to claim 1 , wherein
using a plurality of target images captured in a predetermined period by the plurality of cameras, the one or more processors are further configured to execute the instructions to: predict a trajectory; transform to the reference coordinate with reference to the parameter; calculate the degree of correlation; integrate trajectories; and calculate the parameter.

8 . An information processing method, performed by at least one processor, comprising:
predicting, for each of a plurality of cameras, a trajectory of an object included in at least one of a plurality of target images with reference to the plurality of target images captured by the plurality of cameras; transforming each of a plurality of the predicted trajectories into reference coordinates; calculating a degree of correlation with another trajectory for each of the plurality of trajectories transformed into the reference coordinates; integrating trajectories having the degree of correlation higher than a predetermined value; calculating parameters for spatially and temporally synchronizing images captured by the plurality of cameras with reference to the integrated trajectory; and, transforming each of the plurality of trajectories into the reference coordinate with reference to the parameter.

9 . A non-transitory computer-readable recording medium recording a program for causing a computer to execute the steps of:
predicting, for each of a plurality of cameras, a trajectory of an object included in at least one of a plurality of target images with reference to the plurality of target images captured by the plurality of cameras; transforming each of a plurality of the predicted trajectories into reference coordinates; calculating a degree of correlation with another trajectory for each of the plurality of trajectories transformed into the reference coordinates; integrating trajectories having the degree of correlation higher than a predetermined value; calculating parameters for spatially and temporally synchronizing images captured by the plurality of cameras with reference to the integrated trajectory; and transforming each of the plurality of trajectories into the reference coordinate with reference to the parameter.

Assignees

• Nec Corp

Inventors

• Shibata Takashi
• Yoshida Shuhei
• Terao Makoto
• Hosoi Toshinori
• Ogawa Takuya
• Yamaguchi Masahiro
• Miyano Hiroyoshi
• Babazaki Yasunori
• Takahashi Toru
• Tanaka Yuki
• Ando Ryuhei

Classifications

• G06V10/40 Primary

  Extraction of image or video features · CPC title