The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 1999
Filed:
Nov. 27, 1996
Yoichi Horii, Kokubunji, JP;
Kiyoshi Arai, Kokubunji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A method, apparatus and computer program for generating a perspective projection of a three-dimensional object compatible with a two-dimensional perspective background image. In the invention rectangular parallelepiped guide figure is displayed on a two-dimensional background image. According to inputs from a user, a rectangular parallelepiped guide figure manipulation routine deforms and moves the rectangular parallelepiped guide figure. Once the rectangular parallelepiped has been manipulated to correspond to key features of the background image, a camera angle calculation routine calculates the camera angle, such as the eye position, the viewing direction and the field of view angle for the rectangular parallelepiped guide figure. Using the calculated camera angle, a perspective drawing of a three-dimensional object compatible with the two-dimensional perspective background image is generated.