Patent ID: 7245770

Claim:
A computer readable medium storing a computer program code, comprising: a first computer code configured to generate a signal for use in a video decoding apparatus and for describing information of a moving object region in a video sequence, the signal comprising: time data including a start time and a duration time of the object region in the video sequence; type data being an integer, the integer specifying a type of figure, corresponding to the object region, to be a rectangle, the integer also specifying a number of vertices of the figure; and figure data specifying a trajectory of at least one of the vertices, 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 function identifier, the function identifier indicating an order of a function used to determine the trajectory or indicating that no function is defined to determine the trajectory.