Journal of The Society of Photographic Science and Technology of Japan
Online ISSN : 1884-5932
Print ISSN : 0369-5662
ISSN-L : 0369-5662
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Volume 51, Issue 2
Displaying 1-8 of 8 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1988 Volume 51 Issue 2 Pages 91
    Published: April 28, 1988
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.51.91
    JOURNAL FREE ACCESS
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  • Progress of Photography in 1987
    Yoshitada TOMODA
    1988 Volume 51 Issue 2 Pages 93-102
    Published: April 28, 1988
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.51.93
    JOURNAL FREE ACCESS
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    A world progress report of science and technology of photography is given. News and topics are compiled by referring to journals and periodicals published in foreign countries as well in Japan in 1987. Items are industrial activities, silver halide sensitive materials, non-silver systems, basic theory, photographic processing, image stability, motion picture, application of photography, cameras and equipments.
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  • Colorants Used for Color-Hardcopy Making
    Yasushi OISHI
    1988 Volume 51 Issue 2 Pages 103-109
    Published: April 28, 1988
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.51.103
    JOURNAL FREE ACCESS
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  • Discrimination of Taking Illuminant for Color Negative Films and Skin Color Detection
    Yoichi MIYAKE, Shinichi SHINOHARA, Hirohisa YAGUCHI, Souichi KUBO, Shi ...
    1988 Volume 51 Issue 2 Pages 110-116
    Published: April 28, 1988
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.51.110
    JOURNAL FREE ACCESS
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    It is important to know a kind of taking illuminant in negative color film for improving the color reproduction of photographic printing.
    In this paper, a new method is presented for discrimination of taking illuminant based on the chromaticities and cumulative distribution function calculated from the R, G, B densities of negative color film.
    220 pictures taken with under the three illuminants, daylight, tungsten lamp and fluorescent lamp, were correctly classified into those three groups with 93.4% discrimination ratio. It is also shown that the image processing results of skin color detection from negative color film.
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  • Correlation Range of Molecular Exciton of Cyanine Dyes in Monolayers
    Yoshiro YONEZAWA
    1988 Volume 51 Issue 2 Pages 117-121
    Published: April 28, 1988
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.51.117
    JOURNAL FREE ACCESS
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    N, N'-dioctadecyl-oxacyanine perchlorate (S9) can be incorporated into monolayers in the form of the J-aggregate (S9 (J)) according to the kind of matrix molecules. The temperaturedependent luminescence quenching in the mixed monolayers S11: S9 (J) composed of S9 (J) and a small amount of N, N'-dioctadecyl-thiacyanine perchlorate (S11) has been interpreted by the simple reaction scheme based on the assumption that the rate constant of radiative transition of the molecular exciton is inversely proportional to temperature. Variation of the domain size of coherent exciton of S9 (J) with temperature is analyzed in terms of the correlation range in the classical theory of gas-liquid critical phenomena.
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  • Extinction Spectra of Colloidal Metals Prepared by Photochemical Method
    Tomoo SATO, Yoshiro YONEZAWA, Hiroshi HADA
    1988 Volume 51 Issue 2 Pages 122-134
    Published: April 28, 1988
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.51.122
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    We have prepared colloidal noble metals (Ag, Au, Pt) by photoreduction of metal ions in solutions and examined their optical properties on the basis of Mie theory. Tractable expressions for the extinction coefficient, Kext, scattering coefficient, Ksca, absorption coefficient, Kabs, have been introduced by expanding the denominator and numerator of Mie coefficients respectively in power series of a size parameter and assembling them. General features of calculated extinction spectra appear to be in nice accordance with the observed ones ; extinction maxima located at λ≅410 nm (Ag) and 540 nm (Au), and even optical density almost coincided each other in colloidal gold and platinum. It has been confirmed that our method is also useful to estimate the optical properties of colloidal semiconductor (AgCl) and insulator (SiO2) in water. The present method seems to be superior to the conventional van de Hulst's equation because of its applicability to the colloidal system whose size parameter is larger than 0.6. Preparation, of complex colloids such as Ag/Au, Au/Pt, Ag/Pt and Metal/SiO2 was attempted and their optical properties were examined by introducing an effective medium theory to estimate the optical constants of composite materials.
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  • The World's First True Photograph (1)
    Niepce's Heliograph and Its Right-Left Problem
    Masao NAKAZAKI
    1988 Volume 51 Issue 2 Pages 135-146
    Published: April 28, 1988
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.51.135
    JOURNAL FREE ACCESS
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  • Erratum
    1988 Volume 51 Issue 2 Pages 155
    Published: 1988
    Released on J-STAGE: August 11, 2011
    DOIhttps://doi.org/10.11454/photogrst1964.51.2_155
    JOURNAL FREE ACCESS
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