Competing display technologies for the best image performance

Vaan, Adrianus J. S. M. de

doi:10.1889/1.2785199

Cited by 23 publications

(14 citation statements)

References 41 publications

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“…While not a comprehensive list by any means, these highlight a few of the more popular aspects of new developments in display technology. Out of these three, the increase in brightness and producible colors has garnered a lot of attention and they both seemingly promise great things for the next generation of displays 7 . Indeed, there are indications that as displays become brighter they are better able to mimic scenes from the real world, given that the contrast ratio also increases 8 .…”

Section: Introductionmentioning

confidence: 99%

Perceptually optimal boundaries for wide gamut TVs

Laird

Heynderickx

2008

SPIE Proceedings

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Displays are coming on the market that can produce a larger range of colors over EBU and this has led to much research on the topic of how to use the additional color gamut volume provided by the displays. Some research has focused on different methods to map colors from small to large gamuts, whereas this paper focuses on defining the required gamut boundaries for natural content. Two gamuts were created from the results of a psychophysical experiment that asked observers to choose their preferred image in terms of saturation. One gamut corresponded to the median value of their choices and the second gamut corresponded to the 90% value of their choices. The results indicated that even at the 90% value, the resulting gamut was smaller than that of the wide-gamut display for most hues and actually closer to EBU for some hues. These results are display independent, at least when considering modern displays that can reach luminance values above 250cd/m 2 .

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Section: Introductionmentioning

confidence: 99%

Perceptually optimal boundaries for wide gamut TVs

Laird

Heynderickx

2008

SPIE Proceedings

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“…16 Here, we consider the resolution limits of a LC cell in creating an x-ray image in an XLV. The LC cell that has been proposed 17 for use in the XLV is based on electrically controlled birefringence ͑ECB͒ and is know as a reflective-ECB ͑r-ECB͒ cell, similar to those used in reflective liquid-crystal displays.…”

Section: Iib Liquid-crystal Cell Mtfmentioning

confidence: 99%

The x‐ray light valve: A low‐cost, digital radiographic imaging system—Spatial resolution

2008

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An x-ray light valve ͑XLV͒ coupled with an optical scanner has the potential to meet the need for a low-cost, high quality digital imaging system for general radiography. The XLV/scanner concept combines three well-established, and hence, low-cost technologies: An amorphous selenium ͑a-Se͒ layer as an x-ray-to-charge transducer, a liquid crystal ͑LC͒ cell as an analog display, and an optical scanner for image digitization. The XLV consists of an a-Se layer and LC cell in a sandwich structure which produces an optical image in the LC layer upon x-ray exposure. The XLV/scanner system consists of an XLV in combination with an optical scanner for image readout. Here, the effect of each component on the spatial resolution of an XLV/scanner system is investigated. A theoretical model of spatial resolution of an XLV is presented based on calculations of the modulation transfer function ͑MTF͒ for a-Se and a LC cell. From these component MTFs, the theoretical MTF of the XLV is derived. The model was validated by experiments on a prototype XLV/scanner system. The MTF of the scanner alone was obtained by scanning an optical test target and the MTF of the XLV/scanner system was measured using x rays. From the measured MTF of the scanner, the theoretical MTF of the XLV/scanner system was established and compared with the experimental results. Good general agreement exists between experimental and theoretical results in the frequency range of interest for general radiography, although the theoretical curves slightly overstate the measured MTFs. The experimental MTF of the XLV was compared with the MTF of two clinical systems and was shown to have the capability to exceed the resolution of flat-panel detectors. From this, the authors can conclude that the XLV has an adequate resolution for general radiography. The XLV/scanner also has the potential to eliminate aliasing while maintaining a MTF that exceeds that of a flat-panel imager.

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“…Despite their dominant position, improving the motion picture quality is still an important research topic for LCD TVs. Some known issues of LCDs are sharpness reduction and the trailing effect on video . Several \motion‐blur reduction techniques have been developed, and are already implemented, to improve the motion performance for these displays, but it is difficult to objectively compare the effectiveness of these techniques.…”

Section: Introductionmentioning

confidence: 99%

“…Some known issues of LCDs are sharpness reduction and the trailing effect on video. 3,4 Several \motion-blur reduction techniques have been developed, and are already implemented, to improve the motion performance for these displays, but it is difficult to objectively compare the effectiveness of these techniques. The available objective metrics to predict the resulting perceived sharpness for moving objects are mainly developed for one particular display type or technology.…”

Section: Introductionmentioning

confidence: 99%

A perceived sharpness metric based on the luminance slope and overshoot of the motion‐induced edge‐blur profile

Cui

Wei

2012

J Soc Info Display

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To reduce perceived motion blur on liquid crystal displays, typically various techniques such as overdrive, scanning backlight, black‐data insertion, black‐field insertion, and frame rate up‐conversion are widely employed by the liquid crystal display industry. These techniques aim to steepen the edge transitions by improving the dynamic behavior of the light modulation. However, depending on the implementation, this may result in the perception of irregularly shaped motion‐induced edge‐blur profiles. It is not yet fully understood how these irregularities in the steepened edge‐blur profiles contribute to the perceived sharpness of moving objects. To better understand the consequences of several motion‐blur reduction techniques, a perception experiment is designed to evaluate the perceived sharpness of typical motion‐induced edge‐blur profiles at several contrast levels. Relevant characteristics of these profiles are determined on the basis of the perception results by means of regression analysis. As a result, a sharpness metric with two parameters is established, where one parameter relates to the edge slope and the other to the overshoot/undershoot part of the motion‐induced edge‐blur profile.

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Competing display technologies for the best image performance

Cited by 23 publications

References 41 publications

Perceptually optimal boundaries for wide gamut TVs

Perceptually optimal boundaries for wide gamut TVs

The x‐ray light valve: A low‐cost, digital radiographic imaging system—Spatial resolution

A perceived sharpness metric based on the luminance slope and overshoot of the motion‐induced edge‐blur profile

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