CA2038426A1 - Method and apparatus for generating a texture mapped perspective view - Google Patents

Method and apparatus for generating a texture mapped perspective view

Info

Publication number
CA2038426A1
CA2038426A1 CA002038426A CA2038426A CA2038426A1 CA 2038426 A1 CA2038426 A1 CA 2038426A1 CA 002038426 A CA002038426 A CA 002038426A CA 2038426 A CA2038426 A CA 2038426A CA 2038426 A1 CA2038426 A1 CA 2038426A1
Authority
CA
Canada
Prior art keywords
rendering
generating
polygon
texture
storing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002038426A
Other languages
French (fr)
Other versions
CA2038426C (en
Inventor
John F. Dawson
Thomas D. Snodgrass
James A. Cousens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell Inc
Original Assignee
Honeywell Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honeywell Inc filed Critical Honeywell Inc
Publication of CA2038426A1 publication Critical patent/CA2038426A1/en
Application granted granted Critical
Publication of CA2038426C publication Critical patent/CA2038426C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T15/003D [Three Dimensional] image rendering
    • G06T15/04Texture mapping

Abstract

A method and apparatus for providing a texture mapped perspective view for digital map systems.
The system includes apparatus for storing elevation data (10), apparatus for storing texture data (24), apparatus for scanning a projected view volume (12) from the elevation data storing apparatus, apparatus for processing (14), apparatus for generating a plurality of planar polygons and apparatus (34) for rendering images. The processing apparatus further includes apparatus for receiving the scanned projected view volume from the scanning apparatus, transforming the scanned projected view volume from object space to screen space, and computing surface normals at each vertex of each polygon so as to modulate texture space pixel intensity. The generating apparatus generates the plurality of planar polygons from the transformed vertices and supplies them to the rendering apparatus which then shades each of the planar polygons. In one alternate embodiment of the invention, the polygons are shaded by apparatus of the rendering apparatus assigning one color across the surface of each polygon. In yet another alternate embodiment of the invention, the rendering apparatus interpolates the intensities between the vertices of each polygon in a linear fashion as in Gouraud shading.
CA002038426A 1990-04-26 1991-03-08 Method and apparatus for generating a texture mapped perspective view Expired - Fee Related CA2038426C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/514,598 1990-04-26
US07/514,598 US5179638A (en) 1990-04-26 1990-04-26 Method and apparatus for generating a texture mapped perspective view

Publications (2)

Publication Number Publication Date
CA2038426A1 true CA2038426A1 (en) 1991-10-27
CA2038426C CA2038426C (en) 2002-07-02

Family

ID=24047889

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002038426A Expired - Fee Related CA2038426C (en) 1990-04-26 1991-03-08 Method and apparatus for generating a texture mapped perspective view

Country Status (5)

Country Link
US (1) US5179638A (en)
EP (1) EP0454129B1 (en)
JP (1) JP3028378B2 (en)
CA (1) CA2038426C (en)
DE (1) DE69130545T2 (en)

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Also Published As

Publication number Publication date
JPH0620063A (en) 1994-01-28
EP0454129A2 (en) 1991-10-30
EP0454129A3 (en) 1993-05-19
DE69130545D1 (en) 1999-01-14
US5179638A (en) 1993-01-12
JP3028378B2 (en) 2000-04-04
DE69130545T2 (en) 1999-06-24
EP0454129B1 (en) 1998-12-02
CA2038426C (en) 2002-07-02

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