Measurement and analysis of color shift behavior at image pattern edges projected by raster-scan RGB mobile laser projectors

Kinoshita, Junichi; Takamori, Akira; Yamamoto, Kazuhisa; Kuroda, Kazuyuki; Suzuki, Kôji

doi:10.1007/s10043-021-00707-y

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…For example, in agricultural sciences [31,32], RGB indices have been employed to assess plant health [33] and monitor crops [34]. Some researchers are exploring the integration of image analysis [35], machine learning [36], and computer vision [37] techniques into traditional spectroscopy to expedite the process and reduce costs. In this context, RGB indices could serve as a faster and more cost-effective alternative to UV-VIS spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

Explorative Image Analysis of Methylene Blue Interactions with Gelatin in Polypropylene Nonwoven Fabric Membranes: A Potential Future Tool for the Characterization of the Diffusion Process

Zidek,

Sudakova,

Smilek

et al. 2023

Gels

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This manuscript explores the interaction between methylene blue dye and gelatin within a membrane using spectroscopy and image analysis. Emphasis is placed on methylene blue’s unique properties, specifically its ability to oscillate between two distinct resonance states, each with unique light absorption characteristics. Image analysis serves as a tool for examining dye diffusion and absorption. The results indicate a correlation between dye concentrations and membrane thickness. Thinner layers exhibit a consistent dye concentration, implying an even distribution of the dye during the diffusion process. However, thicker layers display varying concentrations at different edges, suggesting the establishment of a diffusion gradient. Moreover, the authors observe an increased concentration of gelatin at the peripheries rather than at the center, possibly due to the swelling of the dried sample and a potential water concentration gradient. The manuscript concludes by suggesting image analysis as a practical alternative to spectral analysis, particularly for detecting whether methylene blue has been adsorbed onto the macromolecular network. These findings significantly enhance the understanding of the complex interactions between methylene blue and gelatin in a membrane and lay a solid foundation for future research in this field.

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Section: Introductionmentioning

confidence: 99%

Explorative Image Analysis of Methylene Blue Interactions with Gelatin in Polypropylene Nonwoven Fabric Membranes: A Potential Future Tool for the Characterization of the Diffusion Process

Zidek,

Sudakova,

Smilek

et al. 2023

Gels

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“…In general, angle insensitivity is absent in hybridized modes [17]. Due to the polarization and incidence angle insensitivity, a metal-insulatormetal (MIM) plasma filter was developed by Liu et al as a practical filter [18]. Su et al produced a tapered aperture annular array made of metallic gold film perforated with silicon dioxide substrate, which promises an ideal filtering effect when tilted.…”

Section: Introductionmentioning

confidence: 99%

Optical Transmission Plasmonic Color Filter with Wider Color Gamut Based on X-Shaped Nanostructure

et al. 2022

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Extraordinary Optical Transmission Plasmonic Color Filters (EOT-PCFs) with nanostructures have the advantages of consistent color, small size, and excellent color reproduction, making them a suitable replacement for colorant-based filters. Currently, the color gamut created by plasmonic filters is limited to the standard red, green, blue (sRGB) color space, which limits their use in the future. To address this limitation, we propose a surface plasmon resonance (SPR) color filter scheme, which may provide a RGB-wide color gamut while exceeding the sRGB color space. On the surface of the aluminum film, a unique nanopattern structure is etched. The nanohole functions as a coupled grating that matches photon momentum to plasma when exposed to natural light. Metals and surfaces create surface plasmon resonances as light passes through the metal film. The plasmon resonance wavelength can be modified by modifying the structural parameters of the nanopattern to obtain varied transmission spectra. The International Commission on Illumination (CIE 1931) chromaticity diagram can convert the transmission spectrum into color coordinates and convert the spectrum into various colors. The color range and saturation can outperform existing color filters.

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