Patent
1992-02-20
1994-06-28
Herndon, Heather R.
395119, 395125, 395133, G06F 1572
Patent
active
053254708
ABSTRACT:
A method of synthesizing a real image and a computer graphic (CG) having a complex shape in which the normal vector of each of two adjacent planes of a rectangular parallelepiped CG circumscribed about the CG having a complex shape is determined from the coordinates of six vertices representing the two planes on the basis of a real image of a rectangular parallelepiped, and parameters for three-dimensional rotational transformation of the rectangular parallelepiped CG required for synthesis are determined on the basis of the normal vectors. A CG having a complex shape for synthesis is produced by rotational transformation thereof on the basis of the parameters, and the CG having a complex shape thus produced is synthesized on the real image.
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R. S. Weiss et al., "An error analysis for surface orientation from vanishing points", Proc. SPIE, vol. 974, 1988, pp. 187-194 (abstract only from INSPEC database).
C. W. A. M. van Overveld, "Application of a perspective cursor as a 3D locator device", Computer-Aided Design, vol. 21, No. 10, Dec. 1989, pp. 619-629.
Miyatake Takafumi
Sumino Shigeo
Ueda Hirotada
Yoshizawa Satoshi
Ba Huynh
Herndon Heather R.
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