Information processing system, method and computer readable medium for determining whether moving bodies appearing in first and second videos are the same or not

Patent metadata

Field	Value
Publication number	US-2019180584-A1
Application number	US-201916274948-A
Country	US
Kind code	A1
Filing date	Feb 13, 2019
Priority date	Apr 26, 2013
Publication date	Jun 13, 2019
Grant date	—

Abstract

A similarity computation unit ( 130 ) derives a first probability P indicating that a first moving body appearing in the first video is the same as a second moving body appearing in the second video on the basis of similarity of feature value of the moving bodies. A non-appearance probability computation unit ( 140 ) derives a second probability Q indicating that the first moving body is not the same as the second moving body on the basis of an elapsed time after the first moving body exits from the first video. A person determination unit ( 150 ) determines whether the first moving body is the same as the second moving body by comparing the probability P and Q.

First claim

1 - 8 . (canceled)

9 . An information processing system comprising:
at least one memory storing instructions; and at least one processor configured to execute the instructions to:
receive inputs of videos captured by a plurality of imaging apparatuses;
determine that a first moving body appearing in a first video captured by a first imaging apparatus among the plurality of imaging apparatuses and a second moving body appearing in a second video captured by a second imaging apparatus among the plurality of imaging apparatuses are the same based on a similarity between the first moving body appearing in the first video and the second moving body appearing in the second video and an elapsed time from a first time point when the first moving body disappears from the first video; and
when the first moving body does not appear, even with an elapsed time, in another video captured by another imaging apparatus located in an area reachable from an imaging range of the first imaging apparatus, the second index value is decreased.

10 . The information processing system according to claim 9 , wherein the first moving body and the second moving body are determined that both moving bodies are the same when a first index value indicating the similarity is larger than a second index value indicating that the first moving body does not appear in the second video at the second time point when the second moving body appears in the second video.

11 . The information processing system according to claim 10 , wherein the first index value is a first probability indicating that both moving bodies are the same and the second index value is a second probability indicating that the first moving body does not appear in the second video at the second time point when the second moving body appears in the second video.

12 . The information processing system according to claim 9 , wherein the processor is further configured to:
display the second video on a display device.

13 . The information processing system according to claim 12 , wherein the processor is further configured to:
display, on the display device, a screen for presenting the result of the determination indicating whether or not the first moving body and the second moving body are the same.

14 . The information processing system according to claim 13 , wherein the processor is further configured to:
change a display method, when the second moving body appearing in the second video is determined the same as the first moving body appearing in the first video, into a different display method from a display method used before the moving bodies are determined to be the same moving body.

15 . An information processing method performed by at least one computer, the method comprising:
receiving inputs of videos captured by a plurality of imaging apparatuses; determining that a first moving body appearing in a first video captured by a first imaging apparatus among the plurality of imaging apparatuses and a second moving body appearing in a second video captured by a second imaging apparatus among the plurality of imaging apparatuses are the same based on a similarity between the first moving body appearing in the first video and the second moving body appearing in the second video and an elapsed time from a first time point when the first moving body disappears from the first video; and when the first moving body does not appear, even with an elapsed time, in another video captured by another imaging apparatus located in an area reachable from an imaging range of the first imaging apparatus, the second index value is decreased.

16 . The image processing method according to claim 15 , wherein the first moving body and the second moving body are determined that both moving bodies are the same when a first index value indicating the similarity is larger than a second index value indicating that the first moving body does not appear in the second video at the second time point when the second moving body appears in the second video.

17 . The image processing method according to claim 16 , wherein the first index value is a first probability indicating that both moving bodies are the same and the second index value is a second probability indicating that the first moving body does not appear in the second video at the second time point when the second moving body appears in the second video.

18 . The image processing method according to claim 15 , further comprising:
displaying the second video on a display device.

19 . The image processing method according to claim 18 , wherein:
displaying, on the display device, a screen for presenting the result of the determination indicating whether or not the first moving body and the second moving body are the same.

20 . The image processing method according to claim 19 , wherein:
changing a display method, when the second moving body appearing in the second video is determined the same as the first moving body appearing in the first video, into a different display method from a display method used before the moving bodies are determined to be the same moving body.

21 . A non-transitory computer readable recording medium storing programs, the programs causing at least one computer to perform:
receiving inputs of videos captured by a plurality of imaging apparatuses; determining that a first moving body appearing in a first video captured by a first imaging apparatus among the plurality of imaging apparatuses and a second moving body appearing in a second video captured by a second imaging apparatus among the plurality of imaging apparatuses are the same based on a similarity between the first moving body appearing in the first video and the second moving body appearing in the second video and an elapsed time from a first time point when the first moving body disappears from the first video; and when the first moving body does not appear, even with an elapsed time, in another video captured by another imaging apparatus located in an area reachable from an imaging range of the first imaging apparatus, the second index value is decreased.

22 . The non-transitory computer readable recording medium according to claim 21 , wherein the first moving body and the second moving body are determined that both moving bodies are the same when a first index value indicating the similarity is larger than a second index value indicating that the first moving body does not appear in the second video at the second time point when the second moving body appears in the second video.

23 . The non-transitory computer readable recording medium according to claim 22 , wherein the first index value is a first probability indicating that both moving bodies are the same and the second index value is a second probability indicating that the first moving body does not appear in the second video at the second time point when the second moving body appears in the second video.

24 . The non-transitory computer readable recording medium according to claim 21 , wherein the programs further causes the computer to perform:
displaying the second video on a display device.

25 . The non-transitory computer readable recording medium according to claim 24 , wherein the programs causes the computer to perform:
displaying, on the display device, a screen for presenting the result of the determination indicating whether or not the first moving body and the second moving body are the same.

26 . The non-transitory computer readable recording medium according to claim 25 , wherein

Assignees

• Nec Corp

Inventors

• Miyano Hiroyoshi

Classifications

• G08B13/19645

  Multiple cameras, each having view on one of a plurality of scenes, e.g. multiple cameras for multi-room surveillance or for tracking an object by view hand-over · CPC title

• H04N7/181

  for receiving images from a plurality of remote sources · CPC title

• G08B13/196 Primary

  using television cameras · CPC title

• G06K9/00785

  Physics · mapped topic

• G06K9/00677

  Physics · mapped topic