Patent ID: 9092877
Filing Date: 2015-07-28
Classification: G06T

Abstract:
1. An imaging device comprising an imaging unit capturing an image of a subject, and tracking, through images captured in time series, an area in which a specific target appears, comprising: a parameter acquiring unit configured to acquire a photographic parameter from the imaging unit; a target area determining unit configured to determine an area of a captured image including the specific target as a target area; a track area adjusting unit configured to set a track frame for a track area to track the target area including the specific target and adjust a size of the track frame based on the photographic parameter; and a track area searching unit configured to search the captured image for the track area, while moving the size-adjusted track frame, based on a similarity between a characteristic amount of an image in the track area of the captured image in question and that of an image in the target area of a captured image immediately before the image in question in time series, wherein: the photographic parameter comprises at least two parameters which are a focal length and an imaging distance of the imaging unit, and the track area adjusting unit uses the focal length and the imaging distance of the imaging unit as the photographic parameter.