AI Article Synopsis
- Quality assurance for electronic display devices is crucial for accurate soft-copy image interpretations.
- This study examines how different test patterns affect the measurement of luminance in liquid-crystal display (LCD) devices using a telescopic luminance meter.
- Results show that test patterns with a black background yield lower luminance readings than standard TG-18 LN test patterns, particularly in smaller measurement areas and at low luminance levels.
Article Abstract
Quality assurance of electronic display devices is important for maintaining reliable soft-copy image interpretations. This paper presents effects of test patterns on measurement of the luminance of liquid-crystal display (LCD) devices by use of a telescopic-type luminance meter. The luminance for different types of test patterns having different backgrounds and measurement areas was measured and compared with the results obtained with AAPM task group-18 (TG-18) LN test patterns. The luminance measured for the test patterns with a black background was lower than that measured for TG-18 LN test patterns due to the light emitted from the outside the focused area of the telescopic-type luminance meter. Also, the luminance obtained with smaller measurement areas indicated lower luminance. These tendencies were particularly obvious at low luminance. The luminance of the LCD device by use of a telescopic-type luminance meter should be measured with test patterns that have a black background and a smaller measurement area than that for the TG-18 LN test patterns.
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| http://dx.doi.org/10.1007/s12194-007-0011-0 | DOI Listing |
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