Achieving color uniformity across multi-projector displays

Large area tiled displays are gaining popularity for use in collaborative immersive virtual environments and scientific visualization. While recent work has addressed the issues of geometric registration, rendering architectures, and human interfaces, there has been relatively little work on photometric calibration in general, and photometric non-uniformity in particular. For example, as a result of differences in the photometric characteristics of projectors, the color and intensity of a large area display varies from place to place. Further, the imagery typically appears brighter at the regions of overlap between adjacent projectors. We analyze and classify the causes of photometric non-uniformity in a tiled display. We then propose a methodology for determining corrections designed to achieve uniformity, that can correct for the photometric variations across a tiled projector display in real time using per channel color look-up-tables (LUT).

[1]  Naoya Katoh,et al.  Gamut Mapping for Computer Generated Images (II) , 1996, CIC.

[2]  H. John Durrett,et al.  Color and the computer , 1987 .

[3]  Po-Chieh Hung,et al.  Colorimetric calibration in electronic imaging devices using a look-up-table model and interpolations , 1993, J. Electronic Imaging.

[4]  Roger D. Hersch,et al.  Application of a 3-CCD color camera for colorimetric and densitometric measurements , 1998, Electronic Imaging.

[5]  Thomas A. Funkhouser,et al.  Load balancing for multi-projector rendering systems , 1999, Workshop on Graphics Hardware.

[6]  Shin Ohno,et al.  Three-dimensional gamut mapping using various color difference formulae and color spaces , 1999, J. Electronic Imaging.

[7]  James Lee Hafner,et al.  Performing color space conversions with three-dimensional linear interpolation , 1995, J. Electronic Imaging.

[8]  Carolina Cruz-Neira,et al.  Surround-Screen Projection-Based Virtual Reality: The Design and Implementation of the CAVE , 2023 .

[9]  Pat Hanrahan,et al.  A distributed graphics system for large tiled displays , 1999, Proceedings Visualization '99 (Cat. No.99CB37067).

[10]  Mark Hereld,et al.  Introduction to building projection-based tiled display systems , 2000, IEEE Computer Graphics and Applications.

[11]  Norimichi Tsumura,et al.  Color Gamut Mapping based on Mahalanobis Distance for Color Reproduction of Electronic Endoscope Image under Different Illuminant , 1997, CIC.

[12]  Greg Welch,et al.  Efficient Image Generation for Multiprojector and Multisurface Displays , 1998, Rendering Techniques.

[13]  Bernd Hamann,et al.  Proceedings of IEEE Visualization '99 , 1999 .

[14]  Edward J. Giorgianni,et al.  Digital Color Management: Encoding Solutions , 1998 .

[15]  Roger Shepard,et al.  Pitch perception and measurement , 1999 .

[16]  Randall Frank,et al.  High-Resolution Multiprojector Display Walls , 2000, IEEE Computer Graphics and Applications.

[17]  W. Brent Seales,et al.  Multi-projector displays using camera-based registration , 1999, Proceedings Visualization '99 (Cat. No.99CB37067).

[18]  Shigeki Nakauchi,et al.  Color Gamut Mapping by Optimizing Perceptual Image Quality , 1996, Color Imaging Conference.

[19]  Greg Welch,et al.  The office of the future: a unified approach to image-based modeling and spatially immersive displays , 1998, SIGGRAPH.

[20]  James M. Kasson,et al.  Tetrahedral interpolation technique for color space conversion , 1993, Electronic Imaging.

[21]  Kevin E. Spaulding,et al.  UltraColor: a new gamut-mapping strategy , 1995, Electronic Imaging.

[22]  Raja Bala,et al.  Multiresolution color correction , 1998, Electronic Imaging.