Abstract: Actions of a player character in a virtual three-dimensional space are determined for each of the extremities. The position of the end portion of each extremity is determined in the local coordinates of the extremity, with the fixed portion being the reference position. The position of the end portion is determined within a pre-defined range of access, then the joint angle of the intermediate portion is fixed, and the position of the intermediate portion is determined from the angle of rotation about the axis connecting the fixed portion and the end portion. The position of the intermediate portion is determined as angular information within the range of motion of the intermediate portion, which is defined in accordance with the position of the end portion. The shape of each extremity of the character is determined by the positional information about the end portion and the angular information about the intermediate portion.

Abstract: An information processing apparatus selects a plurality of interval width sequences of internal knots of a nonuniform B-spline that approximates waveform data, based on a multivariate normal distribution, and then determines a knot vector based on each of the selected interval width sequences and an optimal control point sequence for each knot vector. Also, the apparatus repeats, for a nonuniform B-spline that is defined for each combination of a knot vector and an optimal control point sequence corresponding to the knot vector, the selection of interval width sequences, the determination of knot vectors and optimal control point sequences and the evaluation thereof, until an evaluation whose objective function is minimized is obtained.

Abstract: Motion data to be inserted between two different object actions that include a rotating action and are to be successively performed are generated so that the two actions are smoothly connected. Respective elements d required to define a transitional motion action are calculated from the respective frames after the end point of the former motion and before the start point of the latter motion. As for the three-dimensional rotation R(t) that defines the posture in each frame, independent linear values rx(t), ry(t), and rz(t) are calculated as values approximating the three-dimensional rotation R(t) by using exponential maps. The velocity components of the respective elements d are determined, and the largest value of the absolute values of the velocity components in each of the post-end frames and the pre-start frames is extracted as an interpolating velocity v(t). The respective elements d(t) in each of blended transitional motion frames can be determined.

Abstract: An information processing apparatus selects a plurality of interval width sequences of internal knots of a nonuniform B-spline that approximates waveform data, based on a multivariate normal distribution, and then determines a knot vector based on each of the selected interval width sequences and an optimal control point sequence for each knot vector. Also, the apparatus repeats, for a nonuniform B-spline that is defined for each combination of a knot vector and an optimal control point sequence corresponding to the knot vector, the selection of interval width sequences, the determination of knot vectors and optimal control point sequences and the evaluation thereof, until an evaluation whose objective function is minimized is obtained.

Abstract: Actions of a player character in a virtual three-dimensional space are determined for each of the extremities. The position of the end portion of each extremity is determined in the local coordinates of the extremity, with the fixed portion being the reference position. The position of the end portion is determined within a pre-defined range of access, then the joint angle of the intermediate portion is fixed, and the position of the intermediate portion is determined from the angle of rotation about the axis connecting the fixed portion and the end portion. The position of the intermediate portion is determined as angular information within the range of motion of the intermediate portion, which is defined in accordance with the position of the end portion. The shape of each extremity of the character is determined by the positional information about the end portion and the angular information about the intermediate portion.

Abstract: Motion data to be inserted between two different object actions that include a rotating action and are to be successively performed are generated so that the two actions are smoothly connected. Respective elements d required to define a transitional motion action are calculated from the respective frames after the end point of the former motion and before the start point of the latter motion. As for the three-dimensional rotation R(t) that defines the posture in each frame, independent linear values rx(t), ry(t), and rz(t) are calculated as values approximating the three-dimensional rotation R(t) by using exponential maps. The velocity components of the respective elements d are determined, and the largest value of the absolute values of the velocity components in each of the post-end frames and the pre-start frames is extracted as an interpolating velocity v(t). The respective elements d(t) in each of blended transitional motion frames can be determined.

Abstract: [Problems] An appropriate motion expression in which a processing load on image processing for a motion of a character is reduced and a predetermined site of the character is in contact with a contact allowed object appropriately is carried out.

Abstract: [Problems] An appropriate motion expression in which a processing load on image processing for a motion of a character is reduced and a predetermined site of the character is in contact with a contact allowed object appropriately is carried out.