Measurement of luminance noise and chromaticity noise of LCDs with a colorimeter and a color camera

H. Roehrig; W. J. Dallas; E. A. Krupinski; Gary R. Redford

doi:10.1117/12.740226

Measurement of luminance noise and chromaticity noise of LCDs with a colorimeter and a color camera

H. Roehrig, W. J. Dallas, E. A. Krupinski, Gary R. Redford

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

This communication focuses on physical evaluation of image quality of displays for applications in medical imaging. In particular we were interested in luminance noise as well as chromaticity noise of LCDs. Luminance noise has been encountered in the study of monochrome LCDs for some time, but chromaticity noise is a new type of noise which has been encountered first when monochrome and color LCDs were compared in an ROC study. In this present study one color and one monochrome 3 M-pixel LCDs were studied. Both were DICOM calibrated with equal dynamic range. We used a Konica Minolta Chroma Meter CS-200 as well as a Foveon color camera to estimate luminance and chrominance variations of the displays. We also used a simulation experiment to estimate luminance noise. The measurements with the colorimeter were consistent. The measurements with the Foveon color camera were very preliminary as color cameras had never been used for image quality measurements. However they were extremely promising. The measurements with the colorimeter and the simulation results showed that the luminance and chromaticity noise of the color LCD were larger than that of the monochrome LCD. Under the condition that an adequate calibration method and image QA/QC program for color displays are available, we expect color LCDs may be ready for radiology in very near future.

Original language	English (US)
Title of host publication	Penetrating Radiation Systems and Applications VIII
DOIs	https://doi.org/10.1117/12.740226
State	Published - 2007
Externally published	Yes
Event	Penetrating Radiation Systems and Applications VIII - San Diego, CA, United States Duration: Aug 29 2007 → Aug 30 2007

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6707
ISSN (Print)	0277-786X

Other

Other	Penetrating Radiation Systems and Applications VIII
Country/Territory	United States
City	San Diego, CA
Period	8/29/07 → 8/30/07

Keywords

Chrominance noise
Color LCD
Foveon color camera
Luminance noise
Medical display
Monochrome LCD

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.740226

Cite this

Measurement of luminance noise and chromaticity noise of LCDs with a colorimeter and a color camera. / Roehrig, H.; Dallas, W. J.; Krupinski, E. A. et al.
Penetrating Radiation Systems and Applications VIII. 2007. 67070V (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6707).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Roehrig, H, Dallas, WJ, Krupinski, EA & Redford, GR 2007, Measurement of luminance noise and chromaticity noise of LCDs with a colorimeter and a color camera. in Penetrating Radiation Systems and Applications VIII., 67070V, Proceedings of SPIE - The International Society for Optical Engineering, vol. 6707, Penetrating Radiation Systems and Applications VIII, San Diego, CA, United States, 8/29/07. https://doi.org/10.1117/12.740226

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AB - This communication focuses on physical evaluation of image quality of displays for applications in medical imaging. In particular we were interested in luminance noise as well as chromaticity noise of LCDs. Luminance noise has been encountered in the study of monochrome LCDs for some time, but chromaticity noise is a new type of noise which has been encountered first when monochrome and color LCDs were compared in an ROC study. In this present study one color and one monochrome 3 M-pixel LCDs were studied. Both were DICOM calibrated with equal dynamic range. We used a Konica Minolta Chroma Meter CS-200 as well as a Foveon color camera to estimate luminance and chrominance variations of the displays. We also used a simulation experiment to estimate luminance noise. The measurements with the colorimeter were consistent. The measurements with the Foveon color camera were very preliminary as color cameras had never been used for image quality measurements. However they were extremely promising. The measurements with the colorimeter and the simulation results showed that the luminance and chromaticity noise of the color LCD were larger than that of the monochrome LCD. Under the condition that an adequate calibration method and image QA/QC program for color displays are available, we expect color LCDs may be ready for radiology in very near future.

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Measurement of luminance noise and chromaticity noise of LCDs with a colorimeter and a color camera

Abstract

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