Displaying detail in bright environments: A 10,000 nit display and its evaluation

Hatchett, J. P. L.; Toffoli, Domenico; Melo, Miguel; Bessa, Maximino; Debattista, Kurt; Chalmers, Alan

doi:10.1016/j.image.2019.04.011

Cited by 6 publications

(4 citation statements)

References 23 publications

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“…When the glass powders were immersed in water for 40 d, Ag@CPBIG hold a PL intensity above 91.4%, whereas CPBIG only maintained 59.3% of the original PL intensity (Figure 3e). Finally, under the strong blue light irradiation at 60 °C, 90% RH, 10000 nit and 450 nm, 43,44 the PL intensity of Ag@CPBIG is attenuated by no more than 20% (Figure 3f), which greatly improves the blue light stability compared with the CPBIG. The above results indicated that the glass systems modified by Ag nanoparticles exhibits higher stability than the unadded glass, which may be due to the homogeneous dispersion of Ag nanoparticles in the glass matrix, modifying the surface defects of the QDs and further stabilizing the lattice of perovskite.…”

Section: ■ Results and Discussionmentioning

confidence: 97%

Ag Nanoparticles Optimized the Optical Properties and Stability of CsPbBrI₂ Glass for High Quality Backlight Display

Huang

Chen

Liang

et al. 2023

ACS Sustainable Chem. Eng.

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All-inorganic perovskite CsPbX 3 (X = Cl, Br, I) nanocrystals (NCs) have generated significant attention in the emerging display industry because of their narrow-band emission, high color purity, and facile preparation and processing. By controlling the deposition of Ag nanoparticles in the B−Si−Zn glass matrix, CsPbBrI 2 NC glass with significantly enhanced photoluminescence (PL) intensity (about 6.3 times) was successfully prepared, and the photoluminescence quantum yield (PLQY) is increased from 12.4% to 36.9%. More meaningfully, the high-performance glass powders were incorporated into polystyrene (PS) films through solution and blending techniques, and the films prepared by the latter had superior color coordinates and environmental stability, particularly the intense blue light stability. Under conditions of 60 °C, 90% relative humidity (RH), and 10 000 nit blue light irradiation for 40 d, the PL intensity decline rate of blended film does not exceed 5%. In addition, the light conversion film based on Ag@CsPbBrI 2 glass with CsPbBr 3 glass powders exhibits a wide color gamut of 125.2% of the NTSC 1953 standard, which shows richer colors than commercial displays on the liquid crystal display (LCD) screen, further opening the space for the development of the quantum dot film industry.

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Section: ■ Results and Discussionmentioning

confidence: 97%

Ag Nanoparticles Optimized the Optical Properties and Stability of CsPbBrI₂ Glass for High Quality Backlight Display

Huang

Chen

Liang

et al. 2023

ACS Sustainable Chem. Eng.

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“…In addition to studies about detection thresholds, such as contrast sensitivity and TVI, there are some works that study the effect of background or surround luminance on various factors, such as the effect on perceived brightness [BB67, YLT*19], perceived dynamic range [HTM*19] and chromatic adaptation [WZIC19]. Background or surround luminance may also influence several aspects when perceiving natural images, such as perceived contrast of images measured by adjusting gamma [Bor17], subjective quality of tone mapping operators [MBDC15] and user preferences for HDR displays [RHLM09].…”

Section: Related Workmentioning

confidence: 99%

Modelling Surround‐aware Contrast Sensitivity for HDR Displays

Jeon

Serrano

et al. 2022

Computer Graphics Forum

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Despite advances in display technology, many existing applications rely on psychophysical datasets of human perception gathered using older, sometimes outdated displays. As a result, there exists the underlying assumption that such measurements can be carried over to the new viewing conditions of more modern technology. We have conducted a series of psychophysical experiments to explore contrast sensitivity using a state‐of‐the‐art HDR display, taking into account not only the spatial frequency and luminance of the stimuli but also their surrounding luminance levels. From our data, we have derived a novel surround‐aware contrast sensitivity function (CSF), which predicts human contrast sensitivity more accurately. We additionally provide a practical version that retains the benefits of our full model, while enabling easy backward compatibility and consistently producing good results across many existing applications that make use of CSF models. We show examples of effective HDR video compression using a transfer function derived from our CSF, tone‐mapping and improved accuracy in visual difference prediction.

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“…Recent advancements in display technology have ushered in a new era of HDR displays, offering a remarkable boost in dynamic range and brightness. HDR prototype displays utilizing arrays of independent high-power light emission diodes (LEDs) as backlight units have achieved extraordinary milestones, boasting a peak brightness of 10,000 cd/m 2 and an impressive 17 stops of dynamic range [2,3]. Similarly, organic lightemitting diode (OLED) technology has started taking a significant market share in the production of HDR consumer televisions.…”

Section: Introductionmentioning

confidence: 99%

A Display-Adaptive Pipeline for Dynamic Range Expansion of Standard Dynamic Range Video Content

Luzardo,

Kumcu,

Aelterman

et al. 2024

Applied Sciences

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Recent advancements in high dynamic range (HDR) display technology have significantly enhanced the contrast ratios and peak brightness of modern displays. In the coming years, it is expected that HDR televisions capable of delivering significantly higher brightness and, therefore, contrast levels than today’s models will become increasingly accessible and affordable to consumers. While HDR technology has gained prominence over the past few years, low dynamic range (LDR) content is still consumed due to a substantial volume of historical multimedia content being recorded and preserved in LDR. Although the amount of HDR content will continue to increase as HDR becomes more prevalent, a large portion of multimedia content currently remains in LDR. In addition, it is worth noting that although the HDR standard supports multimedia content with luminance levels up to 10,000 cd/m2 (a standard measure of brightness), most HDR content is typically limited to a maximum brightness of around 1000 cd/m2. This limitation aligns with the current capabilities of consumer HDR TVs but is a factor approximately five times brighter than current LDR TVs. To accurately present LDR content on a HDR display, it is processed through a dynamic range expansion process known as inverse tone mapping (iTM). This LDR to HDR conversion faces many challenges, including the inducement of noise artifacts, false contours, loss of details, desaturated colors, and temporal inconsistencies. This paper introduces complete inverse tone mapping, artifact suppression, and a highlight enhancement pipeline for video sequences designed to address these challenges. Our LDR-to-HDR technique is capable of adapting to the peak brightness of different displays, creating HDR video sequences with a peak luminance of up to 6000 cd/m2. Furthermore, this paper presents the results of comprehensive objective and subjective experiments to evaluate the effectiveness of the proposed pipeline, focusing on two primary aspects: real-time operation capability and the quality of the HDR video output. Our findings indicate that our pipeline enables real-time processing of Full HD (FHD) video (1920 × 1080 pixels), even on hardware that has not been optimized for this task. Furthermore, we found that when applied to existing HDR content, typically capped at a brightness of 1000 cd/m2, our pipeline notably enhances its perceived quality when displayed on a screen that can reach higher peak luminances.

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Displaying detail in bright environments: A 10,000 nit display and its evaluation

Cited by 6 publications

References 23 publications

Ag Nanoparticles Optimized the Optical Properties and Stability of CsPbBrI₂ Glass for High Quality Backlight Display

Ag Nanoparticles Optimized the Optical Properties and Stability of CsPbBrI₂ Glass for High Quality Backlight Display

Modelling Surround‐aware Contrast Sensitivity for HDR Displays

A Display-Adaptive Pipeline for Dynamic Range Expansion of Standard Dynamic Range Video Content

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Displaying detail in bright environments: A 10,000 nit display and its evaluation

Cited by 6 publications

References 23 publications

Ag Nanoparticles Optimized the Optical Properties and Stability of CsPbBrI2 Glass for High Quality Backlight Display

Ag Nanoparticles Optimized the Optical Properties and Stability of CsPbBrI2 Glass for High Quality Backlight Display

Modelling Surround‐aware Contrast Sensitivity for HDR Displays

A Display-Adaptive Pipeline for Dynamic Range Expansion of Standard Dynamic Range Video Content

Contact Info

Product

Resources

About

Ag Nanoparticles Optimized the Optical Properties and Stability of CsPbBrI₂ Glass for High Quality Backlight Display

Ag Nanoparticles Optimized the Optical Properties and Stability of CsPbBrI₂ Glass for High Quality Backlight Display