Invention Grant
US07663640B2 Methods and systems for compensating an image projected onto a surface having spatially varying photometric properties
有权
用于补偿投影到具有空间变化的光度特性的表面上的图像的方法和系统
- Patent Title: Methods and systems for compensating an image projected onto a surface having spatially varying photometric properties
- Patent Title (中): 用于补偿投影到具有空间变化的光度特性的表面上的图像的方法和系统
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Application No.: US10883861Application Date: 2004-07-02
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Publication No.: US07663640B2Publication Date: 2010-02-16
- Inventor: Shree Nayar , Michael Grossberg , Harish Peri , Peter Belhumeur
- Applicant: Shree Nayar , Michael Grossberg , Harish Peri , Peter Belhumeur
- Applicant Address: US NY New York
- Assignee: The Trustees of Columbia University in the City of New York
- Current Assignee: The Trustees of Columbia University in the City of New York
- Current Assignee Address: US NY New York
- Agency: Byrne Poh LLP
- Main IPC: G09G5/02
- IPC: G09G5/02

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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