How to display data by color schemes compatible with red-green color perception deficiencies

Geissbuehler, Matthias; Lasser, Theo

doi:10.1364/oe.21.009862

Cited by 81 publications

(49 citation statements)

References 26 publications

(28 reference statements)

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“…We choose the sRGB color space because it is commonly used in Windows® operating system. Note that we refer the "isolum" color map [57] to design m, L 0 , and W [].…”

Section: Retinal Angiography With Degree Of Polarization Uniformitymentioning

confidence: 99%

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Noise-immune complex correlation for optical coherence angiography based on standard and Jones matrix optical coherence tomography

Makita

Kurokawa

Hong

et al. 2016

Biomed. Opt. Express

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This paper describes a complex correlation mapping algorithm for optical coherence angiography (cmOCA). The proposed algorithm avoids the signal-to-noise ratio dependence and exhibits low noise in vasculature imaging. The complex correlation coefficient of the signals, rather than that of the measured data are estimated, and two-step averaging is introduced. Algorithms of motion artifact removal based on non perfusing tissue detection using correlation are developed. The algorithms are implemented with Jones-matrix OCT. Simultaneous imaging of pigmented tissue and vasculature is also achieved using degree of polarization uniformity imaging with cmOCA. An application of cmOCA to in vivo posterior human eyes is presented to demonstrate that high-contrast images of patients' eyes can be obtained.

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“…We choose the sRGB color space because it is commonly used in Windows® operating system. Note that we refer the "isolum" color map [57] to design m, L 0 , and W [].…”

Section: Retinal Angiography With Degree Of Polarization Uniformitymentioning

confidence: 99%

“…This shows that the second-step averaging is preferred for high-contrast vasculature imaging. and cmOCA are assigned as blue and orange, respectively [57].…”

Section: Comparison Between Single-channel and Multi-channel Implemenmentioning

confidence: 99%

Noise-immune complex correlation for optical coherence angiography based on standard and Jones matrix optical coherence tomography

Makita

Kurokawa

Hong

et al. 2016

Biomed. Opt. Express

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“…Color rendering of AFM and EELS images was based on the universal design principles detailed by Okabe and Ito 60 and Geissbuehler and Lasser. 61 The crystal structure of the film was determined by X-ray diffraction in transmission geometry using a 40 keV beam at the Cornell High Energy Synchrotron Source. The beam (footprint of ∼0.6 mm × ∼0.6 mm) was moved sequentially to 11 × 11 mesh points spanning the substrate.…”

Section: ■ Introductionmentioning

confidence: 99%

Conductivity and Microstructure of Combinatorially Sputter-Deposited Ta–Ti–Al Nitride Thin Films

et al. 2015

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Materials with long-term durability and electrical conductivity at low pH (<2) and high potentials (∼1.4 V vs RHE) are of great interest as catalyst supports in proton exchange membrane (PEM) fuel cells. We have evaluated Ta−Ti−Al nitrides for this purpose. Combinatorial sputter-deposition of Ta−Ti−Al nitride thin films allowed the composition of these films to be varied spatially over a substrate at ∼1 atomic %/mm, enabling the investigation of the conductivity and microstructure of these materials over a wide range of compositions. Conductive probe atomic force microscopy (cp-AFM) is shown to facilitate high-throughput screening of electrical conductivity as a function of composition. Local, tip-induced oxidation of the film indicated that films annealed in the presence of oxygen were most resistant to oxidation-induced losses of conductivity. Ti-rich compositions exhibited conductivities similar to carbon black and best retained their conductivity after tipinduced oxidation. Small amounts of Ti (∼20 atomic %) were sufficient to impart desired conductivities to compositions rich in Ta and Al, which without Ti exhibited insulating behavior. Electron energy-loss spectroscopy (EELS) imaging revealed the formation of a <2 nm oxide layer at the surface of the nitride films, which is expected to make these materials more durable. Remarkably, high conductivities were observed in the presence of this oxide layer. Segregation of elements was observed at sub-10-nm length scales, yet mapping the lattice constant of the film with X-ray diffraction showed that the majority phase is a wellmixed alloy with a lattice constant that varies smoothly over the entire range of compositions. The rock-salt structure was observed at all compositions except those with high levels of Al.

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“…Istoé, essas paletas são responsáveis por dar destaque ou não a certas características das visualizações, dado o seu efeito na própria percepção humana [45][46][47]. Algumas paletas podem ser apresentadas em uma distribuição linear e outras em logaritmo, essaúltimaé a que mais se assemelha a percepção humana, ou, ainda, facilitar a identificação de certas bandas de cores para pessoas com síndromes de deficiência de percepção de cores, como discutido em [48].…”

Section: B Paletas De Coresunclassified

Explorando a transformada wavelet contínua

Domingues

Mendes

Kaibara

et al. 2016

Rev. Bras. Ensino Fís.

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A transformada wavelet contínua constitui poderosa ferramenta para análise multiescala de dados. Ela tem amplas aplicações na Física, na Matemática, nas Ciências Naturais e, inclusive, grande apelo nas engenharias, computação eáreas de tecnologia e inovação. Do ponto de vista introdutório, a transformada wavelet tem sido abordada amplamente em trabalhos anteriores. Assim, esta apresentação dáênfase ao uso dessa técnica em situações teóricas e práticas que normalmente não são exploradas; porém fundamentais para um uso mais adequado, ou mesmo correto, dessa ferramenta. Um embasamento consistente possibilita, sobretudo, uma extensão de sua aplicação para novas pesquisas, facilitadas pela disponibilidade de programas e ferramentas gratuitas e, até, várias dessas sob a forma de recursos de livre distribuição (free softwares). Por critério de escolha dos autores, apresentam-se, neste artigo, conceitos e exemplos de técnicas que podem ser de grande interesse para vários tipos de estudos na Física e em outrasáreas correlatas. Este texto destina-se a pesquisadores, professores e estudantes de pós-graduação, com a possibilidade de atender ainda necessidades de estudantes dosúltimos anos de graduação. Palavras-chave: wavelet, sinais multiescala, análise de sinais.The continuous wavelet transform is a powerful tool for multiscale data analysis. It has wide applications in physics, mathematics, natural sciences and even great appeal in engineering, computing and areas of technology and innovation. As an introductory point of view, the wavelet transform has been widely addressed in previous works. Thus, this presentation emphasizes the use of this technique in theoretical and practical situations that are not usually explored, but situations that are fundamental to a better use, or even a correct use, of this tool. Consistent bases enable mainly extensions of wavelet application to new investigations, that are facilitated by the availability of free programs and tools, and even several of these in completely available distribution of resources (free softwares). The content of this article, by the authors' choice criteria, presents concepts and examples of techniques that can be of great interest for various studies in physics and other related areas. This text is aimed at researchers, teachers and graduate students, with the possibility of still meet the preparation needs of students at last undergraduation stage. Keywords: wavelet, multiscale signals, signal analysis. IntroduçãoA teoria wavelet causou um frenesi na comunidade científica nasúltimas décadas e gerou um fenômeno de interesse, na pesquisa e na aplicação, com crescimento exponencial, gerando dezenas de milhares * Endereço de correspondência: margarete.domingues@inpe.br.de publicações, patentes e prêmios internacionais associados [8]. O leitor e sua família já participam e conhecem os efeitos desse fenômeno, tanto ao utilizar as imagens jpeg de um celular que podem ser enviadas por internet, quanto ao assistir os filmes de animação 3D, ou mesmo a ter seus dados bio...

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How to display data by color schemes compatible with red-green color perception deficiencies

Cited by 81 publications

References 26 publications

Noise-immune complex correlation for optical coherence angiography based on standard and Jones matrix optical coherence tomography

Noise-immune complex correlation for optical coherence angiography based on standard and Jones matrix optical coherence tomography

Conductivity and Microstructure of Combinatorially Sputter-Deposited Ta–Ti–Al Nitride Thin Films

Explorando a transformada wavelet contínua

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