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Comparison of Luminance Between Face of Turin Shroud Man and Experimental Results

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This work compares the luminance level of photographs of the face on the Turin Shroud with other experiments. Luminance levels are analyzed in order to extract 3D information. Comparisons may aid in better understanding of how the image formed. Four significant photographs of faces are analyzed by a new technique to correlate the black-and-white luminance of various photographic images with the image on the Shroud. Three photographs of the facial image were used to verify the stability of the results, according to variations in the photographic characteristics of the same subject. After normalization of each digitized image, areas corresponding to various classes of gray were highlighted, in correlate them with 3D information on the distance between face and Shroud. All the photographs except that of the “Edessa Mandylion” show some 3D characteristics and the Shroud photographs, although disturbed by many defects, seem to correlate well with the sheet-face distance. Perhaps the best 3D results are those yielded by the carbon dust technique proposed by E. A. Craig, although it presents many open questions regarding formation mechanisms. With respect to the photographs of the Shroud, the experiments of V. Pesce Delfino and J. Nickell show a much higher percentage of saturated pixels correlated with areas of non-contact between face and Shroud. This fact is in contrast with the hypothesis that the body image of the Shroud formed according to the technique proposed by the above researchers.
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Document Type: Research Article

Publication date: March 1, 2002

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  • The Journal of Imaging Science and Technology (JIST) is dedicated to the advancement of imaging science knowledge, the practical applications of such knowledge, and how imaging science relates to other fields of study. The pages of this journal are open to reports of new theoretical or experimental results, and to comprehensive reviews. Only original manuscripts that have not been previously published, nor currently submitted for publication elsewhere, should be submitted.

    IS&T's JIST-first publication option allows authors wishing to present their work at conferences, but have a journal citation for their paper, to submit a paper to JIST that follows the same rigorous peer-review vetting and publication process as traditional JIST articles, but with the benefit of a condensed time-to-publication time frame and guaranteed conference presentation slot.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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