Abstract
By using the data collected in previous colorimetric studies, a quantitative digital image with ± 4% uncertainty relative to the color values, has been made. This goal was achieved by colors correction of a digitalized photograph performed through comparison with some published measurements in CIE XYZ color space. Starting from that image construction, a simply color measurement method was performed by using a common photographic software, and consequently allowing the construction of a colorimetric database of the main observable details of the Turin Shroud (TS). With this tools some analysis on TS colors were performed and interesting results were found: for example, it has been quantitatively demonstrated that the background cloth colors, gradually and continuously changes toward the typical shades of body image. From this work it has been also possible to distinguish colors differences between blood stains and the other stains which have proved to have of different origins.
Highlights
The Turin Shroud (TS) is believed by many to be the burial cloth of Jesus of Nazareth when he had been put in a tomb in Palestine about 2000 years ago
Those points were found on the face and on the neck: the areas in question can be interpreted as typical of body image soaked with blood resulting from injuries on TS man's face and derived from the crown of thorns
A colorimetric measurement process has been developed which allowed to obtain a TS calibrated quantitative image with ± 4% uncertainty relative to the XYZ color values. This result was achieved by comparison and correction of a digitalized photography made by G.Durante in 2002, with a previous published color analysis performed in CIE XYZ color space by P
Summary
The Turin Shroud (TS) is believed by many to be the burial cloth of Jesus of Nazareth when he had been put in a tomb in Palestine about 2000 years ago. The TS is a linen sheet about 4.4 m long and 1.1 m wide, in which the complete front and back body images of a man are impressed. Many hypotheses and experimental tests have been carried out on linen fabrics to explain the formation of the body image, in favor of both authenticity and the other way around [2]. From this brief description it is easy to understand how studies on the TS must be conducted wideranging in many fields of human knowledge, but given the current difficulty to directly perform analysis on the Relic, the studies are performed on materials collected by the STURP (Shroud of Turin Research Project) in 1978 and during other rare occasions. This paper integrates with new content what has been already published [4]
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