GB1377821A - Method and apparatus of perspective transformation in scanned raster visual display - Google Patents

Method and apparatus of perspective transformation in scanned raster visual display

Info

Publication number
GB1377821A
GB1377821A GB1658172A GB1658172A GB1377821A GB 1377821 A GB1377821 A GB 1377821A GB 1658172 A GB1658172 A GB 1658172A GB 1658172 A GB1658172 A GB 1658172A GB 1377821 A GB1377821 A GB 1377821A
Authority
GB
United Kingdom
Prior art keywords
image source
spot
earth
image
viewpoint
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.)
Expired
Application number
GB1658172A
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.)
Singer Co
Original Assignee
Singer Co
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 Singer Co filed Critical Singer Co
Publication of GB1377821A publication Critical patent/GB1377821A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B9/00—Simulators for teaching or training purposes
    • G09B9/02—Simulators for teaching or training purposes for teaching control of vehicles or other craft
    • G09B9/08—Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of aircraft, e.g. Link trainer
    • G09B9/30—Simulation of view from aircraft
    • G09B9/301—Simulation of view from aircraft by computer-processed or -generated image
    • G09B9/302—Simulation of view from aircraft by computer-processed or -generated image the image being transformed by computer processing, e.g. updating the image to correspond to the changing point of view

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Image Processing (AREA)
  • Processing Or Creating Images (AREA)

Abstract

1377821 Simulator display system SINGER CO 11 April 1972 [15 April 1971 23 Dec 1971] 16581/72 Heading H4F In an aircraft simulator or other type of trainer a simulated scene of the earth's surface as viewed from the observer's viewpoint is produced by raster scanning a spot across a simulated display window, the scanned spot being modulated by a video signal produced by scanning an image source depicting the relevant portion of the earth's surface as viewed from an image viewpoint which is different from the observer's viewpoint, this difference in viewpoints being compensated for by modifying the raster scanning of the image source, i.e. the shape of the image source analyzing raster is modified to give a desired perspective change. Specifically the line of sight from the observer passing through the instantaneous spot position on the display window is used to determine the point of intersection with the earth's surface, and the point on the image source (such as a film) corresponding to this earth intersection point is computed and the analyzing spot appropriately positioned on the image source. The image source may comprise a frame of film, the image picked up by a probe in a camera model system, a displayed digitally generated image, or an orthophoto transparency, which is analyzed by a television camera or flying spot scanner. The display may be produced by one or more C.R.T.'s, television projectors or laser projectors. A detailed description of the analyzing raster computation is given in the Specification.
GB1658172A 1971-04-15 1972-04-11 Method and apparatus of perspective transformation in scanned raster visual display Expired GB1377821A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13423871A 1971-04-15 1971-04-15
US21137271A 1971-12-23 1971-12-23

Publications (1)

Publication Number Publication Date
GB1377821A true GB1377821A (en) 1974-12-18

Family

ID=26832099

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1658172A Expired GB1377821A (en) 1971-04-15 1972-04-11 Method and apparatus of perspective transformation in scanned raster visual display

Country Status (6)

Country Link
CA (1) CA969273A (en)
DE (1) DE2217955A1 (en)
FR (1) FR2136428A5 (en)
GB (1) GB1377821A (en)
IT (1) IT953648B (en)
SE (1) SE370286B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438308A1 (en) * 1978-10-02 1980-04-30 Matra Image projector for aircraft flight simulator - uses fish eye lens to project TV projection tube image onto spherical screen

Also Published As

Publication number Publication date
CA969273A (en) 1975-06-10
IT953648B (en) 1973-08-10
SE370286B (en) 1974-10-07
DE2217955A1 (en) 1972-11-09
FR2136428A5 (en) 1972-12-22

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years