Source relative warping for corner pinning

Details Source relative warping for corner pinning Source relative warping for corner pinning

1997-09-12

2000-03-07

Powell, Mark R.

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

345139, 348580, 382295, G06T 320

Patent

active

060346965

ABSTRACT:
A source relative warping technique for corner pinning calculates a final projection matrix representing a desired video effect. At least three non-collinear points are specified in an input video signal representing an image in a source plane. One or more of the non-collinear points are "deformed", and then the points as deformed are processed by the final projection matrix to produce projected points in a target plane. A new projection matrix is defined that projects the original non-collinear points in the source plane onto the projected points in the target plane. The new projection matrix is finally substituted for the final projection matrix.

REFERENCES:
patent: 4951040 (1990-08-01), McNeil et al.
patent: 5848199 (1998-12-01), Naqvi
"Mathematical Elements for Computer Graphics" Second Edition by David F. Rogers and J. Alan Adams, McGraw-Hill, Inc.
Second Edition "Computer Graphics" Principles and Practice by James D. Foley, Andries van Dam, Steven K. Feiner and John F. Hughes, Addison-Wesley Publishing Company.

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