Image quality evaluation of medical color and monochrome displays using an
imaging colorimeter

Hans Roehrig; Xiliang Gu; Jiahua Fan

doi:10.1117/12.966652

17 October 2012 Image quality evaluation of medical color and monochrome displays using an imaging colorimeter

Hans Roehrig, Xiliang Gu, Jiahua Fan

Proceedings Volume 8508, Medical Applications of Radiation Detectors II; 85080G (2012) https://doi.org/10.1117/12.966652
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

The purpose of this presentation is to demonstrate the means which permit examining the accuracy of Image Quality with respect to MTF (Modulation Transfer Function) and NPS (Noise Power Spectrum) of Color Displays and Monochrome Displays. Indications were in the past that color displays could affect the clinical performance of color displays negatively compared to monochrome displays. Now colorimeters like the PM-1423 are available which have higher sensitivity and color accuracy than the traditional cameras like CCD cameras. Reference (1) was not based on measurements made with a colorimeter. This paper focuses on the measurements of physical characteristics of the spatial resolution and noise performance of color and monochrome medical displays which were made with a colorimeter and we will after this meeting submit the data to an ROC study so we have again a paper to present at a future SPIE Conference.Specifically, Modulation Transfer Function (MTF) and Noise Power Spectrum (NPS) were evaluated and compared at different digital driving levels (DDL) between the two medical displays. This paper focuses on the measurements of physical characteristics of the spatial resolution and noise performance of color and monochrome medical displays which were made with a colorimeter and we will after this meeting submit the data to an ROC study so we have again a paper to present at a future Annual SPIE Conference. Specifically, Modulation Transfer Function (MTF) and Noise Power Spectrum (NPS) were evaluated and compared at different digital driving levels (DDL) between the two medical displays. The Imaging Colorimeter. Measurement of color image quality needs were done with an imaging colorimeter as it is shown below. Imaging colorimetry is ideally suited to FPD measurement because imaging systems capture spatial data generating millions of data points in a single measurement operation. The imaging colorimeter which was used was the PM-1423 from Radiant Imaging. It uses full-frame CCDs with 100% fill factor which makes it very suitable to measure luminance and chrominance of individual LCD pixels and sub-pixels on an LCD display. The CCDs used are 14-bit thermoelectrically cooled and temperature stabilized , scientific grade.

Citation Download Citation

Hans Roehrig, Xiliang Gu, and Jiahua Fan "Image quality evaluation of medical color and monochrome displays using an imaging colorimeter", Proc. SPIE 8508, Medical Applications of Radiation Detectors II, 85080G (17 October 2012); https://doi.org/10.1117/12.966652

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KEYWORDS

Modulation transfer functions

Image quality

LCDs

Charge-coupled devices

Imaging systems

Spatial resolution

Diagnostics

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