Results 131 to 140 of about 7,861 (273)

Pixelator v2: A Novel Perceptual Image Comparison Method with LAB Colour Space and Sobel Edge Detection for Enhanced Security Analysis [PDF]

In this paper, we introduce Pixelator v2, a novel perceptual image comparison method designed to enhance security and analysis through improved image difference detection.
Purkait, Rohit, Somdip Dey, Bourazeri, Aikaterini, Rohit Purkait, Julian Thompson, Samuel Hill, Alshehabi Al-Ani, Jabir, Thompson, Julian, Saha, Suman, Hill, Samuel, Jabir Alshehabi Al-Ani, Dey, Somdip, Suman Saha, Aikaterini Bourazeri   +13 more
core   +1 more source

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

FlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan, Hao Li, Mengna Yu, Huiyin Wang, Jiangqiang He, Menghan Wu, Quanyou Feng, Linghai Xie   +7 more
wiley   +1 more source

Carbonyl lock enables multi‐resonant organoboron framework with substantially enhanced spin‐flip and reduced emission bandwidth

FlexMat, EarlyView.
Integrating carbonyl lock onto multi‐resonant organoboron emitters is found to go beyond conventional bridge unit. It can not only suppress the molecular relaxation as conventional bridge, but also substantially affect electronic engineering via carbonyl integration, activating multiple up‐conversion channels, thus leading to an accelerated spin‐flip ...
Tingfeng Chen, Xin Xiong, Rajat Walia, Xiaochun Fan, Wei Liu, Xiankai Chen, Jia Yu, Kai Wang   +7 more
wiley   +1 more source

Colour constancy using von Kries transformations: colour constancy "goes to the Lab" [PDF]

, 2009
Colour constancy algorithms aim at correcting colour towards a correct perception within scenes. To achieve this goal they estimate a white point (the illuminant's colour), and correct the scene for its in uence. In contrast, colour management performs
Kloss, Guy K.
core  

Highly efficient blue crystalline organic light‐emitting diodes enabled by a hot exciton sensitizer PyPO

FlexMat, EarlyView.
Two different sensitization structures (hot exciton sensitizer type and exciton nanoaggregate type) were integrated into crystalline host matrix. The resulting crystalline organic light‐emitting diodes exhibit low Joule heat loss ratio and high photon output.
Hao Hu, Bo Yu, Ping Lu, Feng Zhu, Donghang Yan   +4 more
wiley   +1 more source

Deep red to near‐infrared thermally activated delayed fluorescence conjugated polymers toward highly efficient solution‐processible deep red and near‐infrared organic light‐emitting diodes

FlexMat, EarlyView.
A series of deep red (DR) and near‐infrared (NIR) thermally activated delayed fluorescence conjugated polymers are prepared, their solution‐processible organic light‐emitting diodes exhibit DR emission with maximum external quantum efficiency (EQEmax) of 6.4%, high luminance of 4254 cd m−2 and emission peak at 678 nm, and a NIR device with EQEmax of 2 ...
Tao Wang, Hongyang Zhang, Liping Jin, Peng Tao, Yanxiang Cheng, Wai‐Yeung Wong   +5 more
wiley   +1 more source

Flexible plasma‐sintered transparent conducting electrodes fabricated from particle free gold inks

FlexMat, EarlyView.
Thin gold electrodes fabricated via particle free metal organic decomposition inks provide a promising alternative to indium tin oxide for flexible devices. Low temperature plasma sintering enables compatibility with polymer substrates while maintaining transparency and sufficient electrical conductivity for optoelectronic applications.
Michael Hengge, Felix Hermerschmidt, Nicolas Fratzscher, Konstantin Livanov, Natalia Zamoshchik, Emil J. W. List‐Kratochvil   +5 more
wiley   +1 more source

An attempt to use CIE Lab digital colour to study sediment profiles from the Alvor estuary, South Portugal

, 2005
The study of estuarine sedimentary records is of great interest for paleo-environmental and paleo-climatologic reconstructions, because they represent environments that are sensitive to sea level and climatic variations, and also because they are characterized high sedimentary rates.
Veiga-Pires, C., Mestre, Nélia, Moura, Delminda, Martins, H., Boski, T.   +4 more
openaire   +1 more source

INVESTIGATING THE INFLUENCE OF SODIUM NITRATE ADDITIVES ON COLOR CHANGES IN RAW AND COOKED MEAT PRODUCTS USING CIE LAB COLOR SPACE AND MYOGLOBIN LEVEL MEASUREMENT VIA UV SPECTROPHOTOMETRY

This study investigates the influence of sodium nitrate additives on color changes and myoglobin levels in raw and cooked meat products using CIE Lab color space and UV spectrophotometry. Sausage samples from beef, lamb, and chicken were prepared with varying sodium nitrate concentrations (0 mg/g, 40 mg/g, 80 mg/g, and 120 mg/g), resulting in twelve ...
Dissanayake K.D.K.K., Samadiy M.A., Rifky A.L.M., Nurmukhamedov K.S.   +3 more
openaire   +2 more sources

Recent progress and challenges in top‐emitting quantum dot light‐emitting diodes

FlexMat, EarlyView.
This review summarizes recent advances in top‐emitting quantum‐dot light‐emitting diodes (TE‐QLEDs), including device architectures, microcavity engineering, angular‐emission management, and operational stability, highlighting optical–electrical–thermal co‐optimization as the key pathway toward reliable, high‐performance TE‐QLEDs. Abstract Top‐emitting
Chengyi Chen, Yuqi Liang, Mian Wei, Qiulei Xu, Huimin Zhang, Zhenghui Wu, Huaibin Shen   +6 more
wiley   +1 more source