Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
2004-07-02
2010-02-16
Nguyen, Hau H (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S590000, C345S591000, C345S597000
Reexamination Certificate
active
07663640
ABSTRACT:
Methods and systems are provided for displaying images onto an arbitrary surface, using a projector, such that the quality of the images is preserved despite surface imperfections or color variations. Methods and systems are also provided for controlling the appearance of a projection surface. Various embodiments use a detailed radiometric model and a calibration method to determine the pixel values required to be projected by a projector in order for a camera to observe a desired image. Other embodiments use a compensation algorithm that uses a feedback approach to provide the desired image compensation. Geometric mapping may be used to establish a correspondence between points in the images to be displayed by the projector and the corresponding points in the images that are captured by the camera.
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Belhumeur Peter
Grossberg Michael
Nayar Shree
Peri Harish
Byrne Poh LLP
Nguyen Hau H
The Trustees of Columbia University in the City of New York
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