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Color nonuniformity in projection-based displays: analysis and solutions.
IEEE Trans Vis Comput Graph. 2004 Mar-Apr; 10(2):177-88.IT

Abstract

Large-area displays made up of several projectors show significant variation in color. In this paper, we identify different projector parameters that cause the color variation and study their effects on the luminance and chrominance characteristics of the display. This work leads to the realization that luminance varies significantly within and across projectors, while chrominance variation is relatively small, especially across projectors of same model. To address this situation, we present a method to achieve luminance matching across all pixels of a multiprojector display that results in photometrically uniform displays. We use a camera as a measurement device for this purpose. Our method comprises a one-time calibration step that generates a per channel per projector luminance attenuation map (LAM), which is then used to correct any image projected on the display at interactive rates on commodity graphics hardware. To the best of our knowledge, this is the first effort to match luminance across all the pixels of a multiprojector display.

Authors+Show Affiliations

Majumder A
Department of Computer Science, University of California, Irvine, CA 92697, USA. majumder@ics.uci.edu
Stevens R
No affiliation info available

MeSH

AlgorithmsCalibrationColorColorimetryComputer GraphicsComputer SimulationImage EnhancementImage Interpretation, Computer-AssistedInformation Storage and RetrievalNumerical Analysis, Computer-AssistedReproducibility of ResultsSensitivity and SpecificitySignal Processing, Computer-AssistedUser-Computer InterfaceVideo Recording

Pub Type(s)

Evaluation Study
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Validation Study

Language

eng

PubMed ID

15384642

Citation

Majumder, Aditi, and Rick Stevens. "Color Nonuniformity in Projection-based Displays: Analysis and Solutions." IEEE Transactions On Visualization and Computer Graphics, vol. 10, no. 2, 2004, pp. 177-88.
Majumder A, Stevens R. Color nonuniformity in projection-based displays: analysis and solutions. IEEE Trans Vis Comput Graph. 2004;10(2):177-88.
Majumder, A., & Stevens, R. (2004). Color nonuniformity in projection-based displays: analysis and solutions. IEEE Transactions On Visualization and Computer Graphics, 10(2), 177-88.
Majumder A, Stevens R. Color Nonuniformity in Projection-based Displays: Analysis and Solutions. IEEE Trans Vis Comput Graph. 2004 Mar-Apr;10(2):177-88. PubMed PMID: 15384642.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Color nonuniformity in projection-based displays: analysis and solutions. AU - Majumder,Aditi, AU - Stevens,Rick, PY - 2004/9/24/pubmed PY - 2004/10/20/medline PY - 2004/9/24/entrez SP - 177 EP - 88 JF - IEEE transactions on visualization and computer graphics JO - IEEE Trans Vis Comput Graph VL - 10 IS - 2 N2 - Large-area displays made up of several projectors show significant variation in color. In this paper, we identify different projector parameters that cause the color variation and study their effects on the luminance and chrominance characteristics of the display. This work leads to the realization that luminance varies significantly within and across projectors, while chrominance variation is relatively small, especially across projectors of same model. To address this situation, we present a method to achieve luminance matching across all pixels of a multiprojector display that results in photometrically uniform displays. We use a camera as a measurement device for this purpose. Our method comprises a one-time calibration step that generates a per channel per projector luminance attenuation map (LAM), which is then used to correct any image projected on the display at interactive rates on commodity graphics hardware. To the best of our knowledge, this is the first effort to match luminance across all the pixels of a multiprojector display. SN - 1077-2626 UR - https://www.unboundmedicine.com/medline/citation/15384642/Color_nonuniformity_in_projection_based_displays:_analysis_and_solutions_ DB - PRIME DP - Unbound Medicine ER -