Information processing system, method and computer readable medium for determining whether moving bodies appearing in first and second videos are the same or not
AssigneeNEC Corporation
InventorHiroyoshi Miyano
Life of this patent
Estimating the term…
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.
Claims18
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;
- and
- determine whether 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;
- wherein in determining whether the first moving body and the second moving body are the same, the at least one processor is further configured to execute the instructions to:
- when it is determined that the first moving body can reach, within the elapsed time, an imaging range of a third imaging apparatus from an imaging range of the first imaging apparatus, but does not appear, even after the elapsed time from the first time point, in a third video captured by the third imaging apparatus, decrease a second index value.
An information processing method performed by at least one computer, the method comprising:
- receiving inputs of videos captured by a plurality of imaging apparatuses;
- and
- determining whether 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;
- wherein determining whether the first moving body and the second moving body are the same comprises:
- when it is determined that the first moving body can reach, within the elapsed time, an imaging range of a third imaging apparatus from an imaging range of the first imaging apparatus, but does not appear, even after the elapsed time from the first time point, in a third video captured by the third imaging apparatus, decreasing a second index value.
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;
- and
- 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;
- wherein determining whether the first moving body and the second moving body are the same comprises:
- when it is determined that the first moving body can reach, within the elapsed time, an imaging range of a third imaging apparatus from an imaging range of the first imaging apparatus, but does not appear, even after the elapsed time from the first time point, in a third video captured by the third imaging apparatus, decreasing a second index value.
Dependencies are inferred from the claim text.