Abstract: [Problem] To provide an action-estimating device with which an action of a subject appearing in a plurality of time-series images can be precisely estimated. [Solution] In the action-estimating device 1, an estimating-side detecting unit 13 detects a plurality of articulations A appearing in each time-series image Y on the basis of a reference having been stored in an estimating-side identifier 11 and serving to identify the plurality of articulations A. An estimating-side measuring unit 14 measures the coordinates and the depths of the plurality of articulations A appearing in each of the time-series images Y. On the basis of displacement in the plurality of time-series images Y of the measured coordinate and depth of each of the articulations A, a specifying unit 15 specifies, from among the plurality of articulations A, an articulation group B which belongs to a given subject.

Abstract: [Problem] To provide a suspicious or abnormal subject detecting device for detecting a suspicious or abnormal subject appeared in time-series images. [Solution] An accumulating device 2 includes a first detecting unit 23 for detecting movement of a plurality of articulations includes in an action subject Z appeared in a plurality of first time-series images Y1 obtained by photographing a predetermined point; and a determining unit 24 for determining one or more of normal actions at the predetermined point based on a large number of movement of the plurality of articulations detected by the first detecting unit 23.

Abstract: [Problem] To provide an action-estimating device which is capable of estimating an action of a subject appearing in a plurality of time-series images with high precision. [Solution] Provided is an action-estimating device 1 comprising: an estimating-side obtaining unit 12 for obtaining a plurality of time-series images Y in which a subject Z appears; an estimating-side detecting unit 13 for detecting a plurality of articulations A appearing in each time-series image Y; an estimating-side measuring unit 14 for measuring coordinates of the detected plurality of articulations A in each time-series image Y; an estimating unit 15 for estimating an action of the subject Z based on displacement of the coordinates of the measured plurality of articulations A in the plurality of time-series images Y; and a storing unit 3 for storing a plurality of choices of the action to be estimated. The estimating-side detecting unit 13 further detects a background appeared in each time-series image Y.