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Title: US5329310: Method and apparatus for controlling distortion of a projected image
[ Derwent Title ]

Country: US United States of America

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19 pages

Inventor: Liljegren, Gordon E.; Burbank, CA
Redmann, William G.; Simi Valley, CA
Watson, Scott F.; Glendale, CA

Assignee: The Walt Disney Company, Burbank, CA
other patents from WALT DISNEY COMPANY (617665) (approx. 101)
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Published / Filed: 1994-07-12 / 1992-06-30

Application Number: US1992000907108

IPC Code: Advanced: A63G 31/00; G03B 21/10; G03B 37/00; G09B 9/32; H04N 3/23; H04N 5/16; H04N 5/262; H04N 5/74; H04N 13/00; H04N 17/04; H04N 17/00;
IPC-7: H04N 7/18;

ECLA Code: H04N13/02A3; G09B9/32C; H04N9/31S3; H04N9/31T1; H04N17/04; T04N13/02A3; T04N13/02Y;

U.S. Class: Current: 348/147; 348/039; 348/046; 348/121; 348/143; 348/744; 348/E13.015; 348/E13.025; 348/E17.005;
Original: 348/147; 348/121; 348/143; 348/039; 348/046; 348/144;

Field of Search: 358/108,104,87,209,93 382/044 359/718,728,364,363 395/137-139 434/043,44,40 H04N 718

Priority Number:
1992-06-30  US1992000907108

Abstract:     A method and apparatus for displaying an image that is subject to multiple distortions substantially without distortion is provided. The image is recorded from a first viewpoint and subject to a first distortion and played back from a second viewpoint and subject to a second distortion. The display surface may also be distorted (e.g., curved). By mapping back through the projector to the screen and through the camera (at the viewpoint), the image is transformed so that it can be viewed from the viewpoint with little or no distortion.

Attorney, Agent or Firm: Rogers, Laurence S. ; Ingerman, Jeffrey H. ;

Primary / Asst. Examiners: Groody, James J.; Burgess, Glenton B.

Maintenance Status: CC Certificate of Correction issued

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First Claim:
Show all 152 claims
What is claimed is:     1. A method of displaying an image of a subject on a display surface having a display surface shape and a display surface position, for observation from a viewpoint having a viewpoint position at which said display surface subtends a first field of view, said displayed image having a controlled amount of distortion, said method comprising the steps of:
  • recording source image visual data for said image by transforming source visual data of said subject through a first distorting transformation process with respect to a recording point at which said subject subtends a second field of view which is at least partially contained within said first field of view at said recording point;
  • transforming said recorded source image visual data through an intermediate transformation process to produce target image visual data; and
  • playing back said target image visual data from a playback point having a playback point position at which said display surface subtends a third field of view and such that said subject image subtends at said viewpoint a fourth field of view at least partially contained within said first field of view of said viewpoint, through a second distorting transformation process; wherein:
  • said first and second distorting transformation processes, and said intermediate transformation process are selected so that said second and fourth fields of view are substantially identical, thereby causing said controlled amount of distortion.

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Forward References: Show 66 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (66)   |   Backward references (6)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 8pp US4078860  1978-03 Globus et al.   Cycloramic image projection system
Get PDF - 9pp US4383740  1983-05 Bordousley  Rediffusion Simulation Incorporated Infinity image visual display system
Get PDF - 7pp US4656521  1987-04 Trzeciak et al.  The Singer Company Digital distortion-correcting circuit for projection a flat image on a curved screen from a digital data source for a simulator projected-image visual system
Get PDF - 6pp US4750808  1988-06 Nash et al.  Sigma Design Group Projection screen
Get PDF - 13pp US4978216  1990-12 Liljegren et al.  Walt Disney Company Figure with back projected image using fiber optics
Get PDF - 11pp US5185667  1993-02 Zimmermann  TeleRobotics International, Inc. Omniview motionless camera orientation system
Foreign References:
Publication Date IPC Code Assignee   Title
Get PDF - 19pp EP0198630 1986-10  G06F 15/72 SONY CORP Method and system for image transformation 
Get PDF - 15pp EP0421856 1991-04  H04N 3/233 THOMSON CSF Image display apparatus and process for automatically correcting defects using feedback control 
Buy PDF - 6pp DE4015048 1990-11  H04N 17/00 Samsung Electronics Co., Ltd., Suwon, KR Vorrichtung zum Steuern des Bildmusters eines computergesteuerten Fernsehgeraets 

Other Abstract Info: DERABS G1994-009622

Other References:
  • Dorsey, J., "Computer Graphics for the Design and Visualization of Opera Lighting Effects: A Thesis Presented to the Faculty of the Graduate School of Cornell University in Partial Fulfillment of the Requirements for the Degree of Master of Science," Jan. 1990.
  • Dorsey, J., "Design and Simulation of Opera Lighting and Projection Effects", Computer Graphics, vol. 25, No. 4, pp. 41-50 (ACM Siggraph, Jul. 1991).
  • Wolberg, G., Digital Image Warping, IEEE Computer Society Press Monograph, 1992.

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