Method of describing object region data, apparatus for generating object region data, video processing apparatus and video processing method
First Claim
1. A region data describing apparatus for describing information of a moving object region in a video sequence, the apparatus comprising:
- a first describing unit configured to describe time data including a start time and a duration time of the object region in the video sequence;
a second describing unit configured to describe type data specifying a type of figure, corresponding to the object region, the type data also specifying a number of vertices of the figure; and
a third describing unit configured to describe figure data specifying a trajectory of at least one of the vertices through at least three successive frames, the figure data including;
time arrangement data including times of points used to determine the trajectory,key value data representing values of the points used to determine the trajectory, andfunction data for indicating the trajectory of at least one of the vertices and therefore also the trajectory of the object region, using information, the information indicating an order of a function used to determine the trajectory or that no function is defined.
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Abstract
A region data describing method for describing, over a plurality of frames, region data about the region of an arbitrary object in a video, the method specifying the object region in the video with at least either of an approximate figure approximating the region or characteristic points of the region, approximating a trajectory obtained by arranging position data of the representative points or the characteristic point in a direction in which frames proceed with a predetermined function and describing the parameter of the function as region data. Thus, the region of a predetermined object in the video can be described with a small quantity of data. Moreover, creation and handling of data can easily be performed.
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Citations
9 Claims
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1. A region data describing apparatus for describing information of a moving object region in a video sequence, the apparatus comprising:
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a first describing unit configured to describe time data including a start time and a duration time of the object region in the video sequence; a second describing unit configured to describe type data specifying a type of figure, corresponding to the object region, the type data also specifying a number of vertices of the figure; and a third describing unit configured to describe figure data specifying a trajectory of at least one of the vertices through at least three successive frames, the figure data including; time arrangement data including times of points used to determine the trajectory, key value data representing values of the points used to determine the trajectory, and function data for indicating the trajectory of at least one of the vertices and therefore also the trajectory of the object region, using information, the information indicating an order of a function used to determine the trajectory or that no function is defined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification