Image quality degradation by light scattering in display devices

Flynn, Michael J.; Badano, Aldo

doi:10.1007/bf03168843

Cited by 40 publications

(22 citation statements)

References 19 publications

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“…In practical scenarios however, the room will be illuminated, which will change the state of adaptation of the observer. It will also reduce contrast of the display, as it will reflect a portion of the incident light [Devlin et al 2006] while scattering inside the display panel will further reduce contrast [Flynn and Badano 1999]. We expect that under such conditions the dynamic range required to accommodate the HVS's will be higher.…”

Section: Experiments 2: Stimulus Durationmentioning

confidence: 93%

A reassessment of the simultaneous dynamic range of the human visual system

Kunkel

Reinhard

2010

Proceedings of the 7th Symposium on Applied Perception in Graphics and Visualization

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The dynamic range of the human visual system should be an important parameter in the design of high dynamic range (HDR) display devices. A good display should at least approximate this range. However, the literature reports a simultaneous dynamic range between 2 and 4 log units of luminance, leaving ambiguity as to what dynamic range HDR display devices should cater for. In this paper we present a sequence of psychophysical experiments, carried out with the aid of a high dynamic range display device, to determine the simultaneous dynamic range of the human visual system under full adaptation to a given background luminance. Our findings show that the human visual system is capable of distinguishing contrasts over a range of 3.7 log units under specific viewing conditions. Further, we show how the dynamic range is affected by stimulus duration, contrast of the stimulus as well as background illumination, thereby accounting for the differences reported in the literature and providing guidance for display design.

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Section: Experiments 2: Stimulus Durationmentioning

confidence: 93%

A reassessment of the simultaneous dynamic range of the human visual system

Kunkel

Reinhard

2010

Proceedings of the 7th Symposium on Applied Perception in Graphics and Visualization

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“…These reflections are imaged behind the screen and produce multiple additional conflicting cues demanding an additional accommodation response. The use of antiglare coating as found by Flynn et al 11 significantly reduces this diffuse light reflecting from the VDT at varying angles thereby reducing diffuse reflection coefficient. In addition it also reduces specular reflection coefficient and glare coefficient to increase the comfort of viewing.…”

Section: Reflections On Screenmentioning

confidence: 99%

Computer and visual display terminals (VDT) vision syndrome (CVDTS)

Parihar

Jain

Chaturvedi

et al. 2016

Medical Journal Armed Forces India

122

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m e d i c a l j o u r n a l a r m e d f o r c e s i n d i a 7 2 ( 2 0 1 6 ) 2 7 0 -2 7 6 a r t i c l e i n f o The use of these devices has made our life simple in household work as well as in offices.However the prolonged use of these devices is not without any complication. Computer and visual display terminals syndrome is a constellation of symptoms ocular as well as extraocular associated with prolonged use of visual display terminals. This syndrome is gaining importance in this modern era because of the widespread use of technologies in day-to-day life. It is associated with asthenopic symptoms, visual blurring, dry eyes, musculoskeletal symptoms such as neck pain, back pain, shoulder pain, carpal tunnel syndrome, psychosocial factors, venous thromboembolism, shoulder tendonitis, and elbow epicondylitis. Proper identification of symptoms and causative factors are necessary for the accurate diagnosis and management. This article focuses on the various aspects of the computer vision display terminals syndrome described in the previous literature. Further research is needed for the better understanding of the complex pathophysiology and management. #

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“…DI-COM (Digital Imaging and Communication in Medicine) 5 Part 14 recommends that surrounding monitor luminescence be 20% of the maximum monitor luminance when a DICOM calibration is performed. Several studies [6][7][8][9][10][11][12] have investigated the effects of the ambient light and image surround intensity on the display luminance and image contrast. Mertelmeier 11 believes that room lighting affects the contrast threshold more severely at low background levels than at high background levels.…”

mentioning

confidence: 99%

Effect of Room Illuminance on Monitor Black Level Luminance and Monitor Calibration

Chakrabarti

Kaczmarek²,

Thomas

et al. 2003

Journal of Digital Imaging

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In this article we demonstrate the effect of room illuminance and surrounding monitor black level luminance on image quality for soft copy interpretation. Luminance values of a 10% central target and image quality evaluations and observer performance using a contrast-detail mammography (CDMAM) phantom demonstrate these effects. Our results indicate that high room illuminance has a more damaging effect on image quality when the surrounding monitor luminance is 0% to 5% of the maximum monitor luminance. The effect of room illuminance is less obvious when the surrounding monitor luminance is 20% of the maximum.

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Image quality degradation by light scattering in display devices

Cited by 40 publications

References 19 publications

A reassessment of the simultaneous dynamic range of the human visual system

A reassessment of the simultaneous dynamic range of the human visual system

Computer and visual display terminals (VDT) vision syndrome (CVDTS)

Effect of Room Illuminance on Monitor Black Level Luminance and Monitor Calibration

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