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  1. AU="Blaksley, C"
  2. AU="Heri Hermasyah"
  3. AU="Charlier, Filip"
  4. AU="Mihalopoulos, N"
  5. AU="Fernandez, S Gomez"

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  1. Artikel ; Online: Design and performance of a hyperspectral camera for full-face in vivo imaging.

    Blaksley, C / Casolino, M / Cambié, G

    The Review of scientific instruments

    2021  Band 92, Heft 5, Seite(n) 55108

    Abstract: Red, green, blue color photography is a mature technology and a powerful tool for the evaluation and understanding of the way an object reflects light and its related optical properties, but color photography fails to give a complete picture of these ... ...

    Abstract Red, green, blue color photography is a mature technology and a powerful tool for the evaluation and understanding of the way an object reflects light and its related optical properties, but color photography fails to give a complete picture of these effects due to its inherent lack of spectral resolution. In this work, we update the L'OREAL reference device for skin color measurement, the Chromasphere, by replacing its current color camera system with an imaging spectrometer. This imaging spectrometer must provide a spatial resolution on par with the previous color cameras and a spectral resolution commensurate with a spectroradiometer while also achieving a time resolution suitable for in vivo studies of the human face. Due to these requirements, common spatial scanning techniques are not suitable for this application, and so we utilized a spectral-scanning approach based on a tunable liquid-crystal birefringent filter. We present the design and performance tests of a working prototype that is capable of measuring the spectrum in each of 4 MP with a nominal spectral resolution of 10 nm across the wavelength range from 420 to 730 nm in a total imaging time of less than 10 s. We cross-compared the spectral and color measurements obtained with this prototype, an industry-standard spectroradiometer, and a charge-coupled device color camera in order to assess the prototype's performance, and the results of this comparison show that our prototype is capable of taking spectral measurements near enough in quality to those of a spectroradiometer to successfully bridge the divide between such devices and conventional color cameras. Doing so, this instrument opens new possibilities for studies of complex in vivo phenomena that neither non-imaging spectrometers nor conventional cameras can pursue.
    Mesh-Begriff(e) Photography
    Sprache Englisch
    Erscheinungsdatum 2021-08-06
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 209865-9
    ISSN 1089-7623 ; 0034-6748
    ISSN (online) 1089-7623
    ISSN 0034-6748
    DOI 10.1063/5.0047300
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Cosmetic effects of red-light reflection by ultramarine blue pigment.

    Ikkai, Fumiyoshi / Blaksley, Carl / Hayashi, Rena / Jaspers, Alexander

    International journal of cosmetic science

    2023  Band 45, Heft 3, Seite(n) 413–423

    Abstract: Objective: Inorganic pigments used as colouring agents in cosmetics (especially foundations) have many advantages over organic pigments, such as better opacity, weather and chemical resistance and lower cost. However, the types used in cosmetics are ... ...

    Abstract Objective: Inorganic pigments used as colouring agents in cosmetics (especially foundations) have many advantages over organic pigments, such as better opacity, weather and chemical resistance and lower cost. However, the types used in cosmetics are very limited, with various kinds of red, yellow and black iron oxide along with white titanium dioxide being the main materials. Ultramarine blue (UB) as a blue pigment and chromium oxide as a green pigment are also sometimes used in cosmetics. In this study, we focus once again on UB and reexamine the possibility of expanding the colour gamut using UB instead of black pigment and creating other optical cosmetic effects.
    Methods: The effects of using UB were measured using spectroscopic instruments to determine the colour parameters when applied on artificial skin. The appearance of the product when applied to the human face was also verified both in terms of human appearance evaluation by an expert (esthetician) and numerical evaluation using imaging spectrometer measurements.
    Results: The verified results showed that, at least in the colour range targeting Asian people, UB could not create a new colour gamut, but it was clear that UB could impart an optical effect that produced a beautiful skin effect on the face. This was remarkable both in the evaluation of human appearance and in the spectral measurement results, which confirmed the phenomenon "red-light makes skin look beautiful," which has been variously reported since the 2000s, using a different approach.
    Conclusion: We have discovered a new possibility that UB, widely recognized as a pigment, is involved not only in colour tone but also in optical effects that contribute to the goal of beautiful skin, i.e. hiding skin wrinkles, eliminating unevenness of colour and improving skin homogeneity.
    Mesh-Begriff(e) Humans ; Light ; Skin ; Cosmetics ; Coloring Agents
    Chemische Substanzen Cosmetics ; Coloring Agents
    Sprache Englisch
    Erscheinungsdatum 2023-04-21
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 198917-0
    ISSN 1468-2494 ; 0142-5463
    ISSN (online) 1468-2494
    ISSN 0142-5463
    DOI 10.1111/ics.12849
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  3. Artikel ; Online: Repeatability and reproducibility of a hyperspectral imaging system for in vivo color evaluation.

    Blaksley, Carl / Udodaira, Kumiko / Yoshida, Mie / Nicolas, Alexandre / Velleman, Damien / Casolino, Marco / Flament, Frederic

    Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI)

    2022  Band 28, Heft 4, Seite(n) 544–555

    Abstract: Background: Color imaging is a tried and true method for the evaluation of cosmetic and dermatological effects, but it fails to capture all the information in a scene's spectral reflectance. For this reason, there has been in recent years increasing ... ...

    Abstract Background: Color imaging is a tried and true method for the evaluation of cosmetic and dermatological effects, but it fails to capture all the information in a scene's spectral reflectance. For this reason, there has been in recent years increasing interest in the use of imaging spectrometers for clinical studies and product evaluation.
    Material and methods: We developed a novel HyperSpectral Imager (HSI) able to take in vivo full-face format images as a next generation instrument for skin color measurement and beyond. Here, we report part of the results of our first full-scale validation test of the HSI. We replicated a make-up foundation screening test by applying three products to a panel of 9 models and evaluated the product L
    Results: We find that the measurements from the HSI provide repeatability and reproducibility as good or better than those of our previous benchmark devices.
    Conclusion: From these results, we conclude that not only is the HSI suitable for use in color evaluation studies, but also that it gives operational advantages over the previous generation of evaluation instruments, as it provides a spectral measurement combined with good spatial resolution. This allows for analysis of color over an area and post hoc selection of study regions and so opens new possibilities for studies of complex in vivo phenomena which neither non-imaging spectrometers nor conventional cameras can pursue. This study also raises points for future work concerning proper inclusion of instrument uncertainty in comparisons of results between instruments and handling of systematic uncertainties from analyses based on a single area.
    Mesh-Begriff(e) Cosmetics ; Humans ; Hyperspectral Imaging ; Reproducibility of Results ; Skin Pigmentation
    Chemische Substanzen Cosmetics
    Sprache Englisch
    Erscheinungsdatum 2022-05-23
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1229160-2
    ISSN 1600-0846 ; 0909-752X ; 1397-1344
    ISSN (online) 1600-0846
    ISSN 0909-752X ; 1397-1344
    DOI 10.1111/srt.13160
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  4. Artikel ; Online: Dataset of night-time emissions of the Earth in the near UV range (290-430 nm), with 6.3 km resolution in the latitude range -51.6<L<+51.6 degrees, acquired on board the International Space Station with the Mini-EUSO detector.

    Marcelli, L / Bolmgren, K / Barghini, D / Battisti, M / Blaksley, C / Blin, S / Belov, A / Bertaina, M / Bianciotto, M / Bisconti, F / Cambiè, G / Capel, F / Casolino, M / Churilo, I / Crisconio, M / Taille, C De La / Ebisuzaki, T / Eser, J / Fenu, F /
    Franceschi, M A / Fuglesang, C / Golzio, A / Gorodetzky, P / Kasuga, H / Kajino, F / Klimov, P / Kuznetsov, V / Manfrin, M / Mascetti, G / Marszal, W / Miyamoto, H / Murashov, A / Napolitano, T / Ohmori, H / Olinto, A / Parizot, E / Picozza, P / Piotrowski, L W / Plebaniak, Z / Prevot, G / Reali, E / Romoli, G / Ricci, M / Sakaki, N / Shinozaki, K / Szabelski, J / Takizawa, Y / Vagelli, V / Valentini, G / Vrabel, M / Wiencke, L

    Data in brief

    2023  Band 48, Seite(n) 109105

    Abstract: The data presented in this article are related to the research paper entitled " ...

    Abstract The data presented in this article are related to the research paper entitled "
    Sprache Englisch
    Erscheinungsdatum 2023-03-31
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 2786545-9
    ISSN 2352-3409 ; 2352-3409
    ISSN (online) 2352-3409
    ISSN 2352-3409
    DOI 10.1016/j.dib.2023.109105
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  5. Buch ; Online: Observation of night-time emissions of the Earth in the near UV range from the International Space Station with the Mini-EUSO detector

    Casolino, M. / Barghini, D. / Battisti, M. / Blaksley, C. / Belov, A. / Bertaina, M. / Bianciotto, M. / Bisconti, F. / Blin, S. / Bolmgren, K. / Cambiè, G. / Capel, F. / Churilo, I. / Crisconio, M. / De La Taille, C. / Ebisuzaki, T. / Eser, J. / Fenu, F. / Franceschi, M. A. /
    Fuglesang, C. / Golzio, A. / Gorodetzky, P. / Kasuga, H. / Kajino, F. / Klimov, P. / Kuznetsov, V. / Manfrin, M. / Marcelli, L. / Mascetti, G. / Marsza, W. / Miyamoto, H. / Murashov, A. / Napolitano, T. / Ohmori, H. / Olinto, A. / Parizot, E. / Picozza, P. / Piotrowski, L. W. / Plebaniak, Z. / Prévôt, G. / Reali, E. / Romoli, G. / Ricci, M. / Sakaki, N. / Shinozaki, K. / Szabelski, J. / Takizawa, Y. / Valentini, G. / Vrabel, M. / Wiencke, L.

    2022  

    Abstract: Mini-EUSO (Multiwavelength Imaging New Instrument for the Extreme Universe Space Observatory) is a telescope observing the Earth from the International Space Station since 2019. The instrument employs a Fresnel-lens optical system and a focal surface ... ...

    Abstract Mini-EUSO (Multiwavelength Imaging New Instrument for the Extreme Universe Space Observatory) is a telescope observing the Earth from the International Space Station since 2019. The instrument employs a Fresnel-lens optical system and a focal surface composed of 36 multi-anode photomultiplier tubes, 64 channels each, for a total of 2304 channels with single photon counting sensitivity. Mini-EUSO also contains two ancillary cameras to complement measurements in the near infrared and visible ranges. The scientific objectives of the mission range from the search for extensive air showers generated by Ultra-High Energy Cosmic Rays (UHECRs) with energies above 10$^{21}$ eV, the search for nuclearites and Strange Quark Matter (SQM), up to the study of atmospheric phenomena such as Transient Luminous Events (TLEs), meteors and meteoroids. Mini-EUSO can map the night-time Earth in the near UV range (between 290-430 nm) with a spatial resolution of about 6.3 km (full field of view of 44{\deg}) and a maximum temporal resolution of 2.5 $\mu$s, observing our planet through a nadir-facing UV-transparent window in the Russian Zvezda module. The detector saves triggered transient phenomena with a sampling rate of 2.5 $\mu$s and 320 $\mu$s, as well as continuous acquisition at 40.96 ms scale. In this paper we discuss the detector response and the flat-fielding and calibration procedures. Using the 40.96 ms data, we present $\simeq$6.3 km resolution night-time Earth maps in the UV band, and report on various emissions of anthropogenic and natural origin. We measure ionospheric airglow emissions of dark moonless nights over the sea and ground, studying the effect of clouds, moonlight, and artificial (towns, boats) lights. In addition to paving the way forward for the study of long-term variations of natural and artificial light, we also estimate the observation live-time of future UHECR detectors.

    Comment: 49 pages, 27 figures, 1 table, published in Remote Sensing of Environment
    Schlagwörter Astrophysics - Instrumentation and Methods for Astrophysics
    Thema/Rubrik (Code) 910
    Erscheinungsdatum 2022-12-05
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  6. Artikel: A Review of the EUSO-Balloon Pathfinder for the JEM-EUSO Program.

    Adams, J H / Ahmad, S / Allard, D / Anzalone, A / Bacholle, S / Barrillon, P / Bayer, J / Bertaina, M / Bisconti, F / Blaksley, C / Blin-Bondil, S / Bobík, P / Cafagna, F / Campana, D / Capel, F / Casolino, M / Cassardo, C / Catalano, C / Cremonini, R /
    Dagoret-Campagne, S / Danto, P / Del Peral, L / de la Taille, C / Díaz Damian, A / Dupieux, M / Ebersoldt, A / Ebisuzaki, T / Eser, J / Evrard, J / Fenu, F / Ferrarese, S / Fornaro, C / Fouka, M / Gorodetzky, P / Guarino, F / Guzman, A / Hachisu, Y / Haungs, A / Judd, E / Jung, A / Karczmarczyk, J / Kawasaki, Y / Klimov, P A / Kuznetsov, E / Mackovjak, S / Manfrin, M / Marcelli, L / Medina-Tanco, G / Mercier, K / Merino, A / Mernik, T / Miyamoto, H / Morales de Los Ríos, J A / Moretto, C / Mot, B / Neronov, A / Ohmori, H / Olinto, A V / Osteria, G / Panico, B / Parizot, E / Paul, T / Picozza, P / Piotrowski, L W / Plebaniak, Z / Pliego, S / Prat, P / Prévôt, G / Prieto, H / Putis, M / Rabanal, J / Ricci, M / Rojas, J / Rodríguez Frías, M D / Roudil, G / Sáez Cano, G / Sahnoun, Z / Sakaki, N / Sanchez, J C / Santangelo, A / Sarazin, F / Scotti, V / Shinozaki, K / Silva, H / Soriano, J F / Suino, G / Szabelski, J / Toscano, S / Tabone, I / Takizawa, Y / von Ballmoos, P / Wiencke, L / Wille, M / Zotov, M

    Space science reviews

    2022  Band 218, Heft 1, Seite(n) 3

    Abstract: ... EUSO- ... ...

    Abstract EUSO-Balloon
    Sprache Englisch
    Erscheinungsdatum 2022-02-01
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article ; Review
    ZDB-ID 2017804-9
    ISSN 1572-9672 ; 0038-6308
    ISSN (online) 1572-9672
    ISSN 0038-6308
    DOI 10.1007/s11214-022-00870-x
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  7. Buch ; Online: Neural Network Based Approach to Recognition of Meteor Tracks in the Mini-EUSO Telescope Data

    Zotov, Mikhail / Anzhiganov, Dmitry / Kryazhenkov, Aleksandr / Barghini, Dario / Battisti, Matteo / Belov, Alexander / Bertaina, Mario / Bianciotto, Marta / Bisconti, Francesca / Blaksley, Carl / Blin, Sylvie / Cambiè, Giorgio / Capel, Francesca / Casolino, Marco / Ebisuzaki, Toshikazu / Eser, Johannes / Fenu, Francesco / Franceschi, Massimo Alberto / Golzio, Alessio /
    Gorodetzky, Philippe / Kajino, Fumiyoshi / Kasuga, Hiroshi / Klimov, Pavel / Manfrin, Massimiliano / Marcelli, Laura / Miyamoto, Hiroko / Murashov, Alexey / Napolitano, Tommaso / Ohmori, Hiroshi / Olinto, Angela / Parizot, Etienne / Picozza, Piergiorgio / Piotrowski, Lech Wiktor / Plebaniak, Zbigniew / Prévôt, Guillaume / Reali, Enzo / Ricci, Marco / Romoli, Giulia / Sakaki, Naoto / Shinozaki, Kenji / De La Taille, Christophe / Takizawa, Yoshiyuki / Vrábel, Michal / Wiencke, Lawrence

    2023  

    Abstract: Mini-EUSO is a wide-angle fluorescence telescope that registers ultraviolet (UV) radiation in the nocturnal atmosphere of Earth from the International Space Station. Meteors are among multiple phenomena that manifest themselves not only in the visible ... ...

    Abstract Mini-EUSO is a wide-angle fluorescence telescope that registers ultraviolet (UV) radiation in the nocturnal atmosphere of Earth from the International Space Station. Meteors are among multiple phenomena that manifest themselves not only in the visible range but also in the UV. We present two simple artificial neural networks that allow for recognizing meteor signals in the Mini-EUSO data with high accuracy in terms of a binary classification problem. We expect that similar architectures can be effectively used for signal recognition in other fluorescence telescopes, regardless of the nature of the signal. Due to their simplicity, the networks can be implemented in onboard electronics of future orbital or balloon experiments.

    Comment: 15 pages
    Schlagwörter Astrophysics - Instrumentation and Methods for Astrophysics ; Computer Science - Computer Vision and Pattern Recognition ; Computer Science - Machine Learning
    Thema/Rubrik (Code) 006
    Erscheinungsdatum 2023-11-25
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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