Title:
【発明の名称】映像画像の特殊効果方法
Document Type and Number:
Japanese Patent JP2759882
Kind Code:
B2
Abstract:
A method for orientating and animating video images using quaternions to provide smooth, predictable rotations in a digital video effect device. Euler angles for a new orientation are input by an operator and are converted into an appropriate quaternion. For incremental orientation changes the appropriate quaternion is combined with the current quaternion of the video image in either source or target space to form a new quaternion for the new orientation of the video image. A selected plurality of such new quaternions in a sequence make up the video effect keyframes. In executing the video effect a Bezier spherical linear algorithm is used to interpolate intermediate quaternions on a video field by field basis between neighboring pairs of keyframe quaternions based upon the source keyframe quaternion, the destination keyframe quaternion, a source outgoing keyframe quaternion, a destination incoming keyframe quaternion and an inbetweening time coefficient. The intermediate quaternions are fine tuned by referring to tension, continuity and bias parameters.
Inventors:
FURANSHISU ANDORYUU UITETSUKU
DEIBITSUDO II REIKU JUNIA
DEIBITSUDO II REIKU JUNIA
Application Number:
JP29308787A
Publication Date:
May 28, 1998
Filing Date:
November 19, 1987
Export Citation:
Assignee:
TEKUTORONITSUKUSU INC
International Classes:
H04N5/262; G06T3/00; G06T13/00; G09G1/00; G09G5/36; (IPC1-7): G06T15/70
Other References:
【文献】SIGGRAPH ’85 Vol.19,No.3,P.245~P.254“Animating Rotation with Quaternion Curves”
Attorney, Agent or Firm:
Kunio Yamaguchi (2 outside)