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Computer-enhanced ultraviolet image of the Turin Shroud,
processed (1976) by Dr Donald Lynn & Dr Jean Lorre,
Jet Propulsion Laboratory, Pasadena, California USA.
A history of this computer-imaging project on the Shroud.

A complete review of the ongoing Shroud investigations
is online at (maintained by Barrie Schwortz).

Frontal image in negative.

Frontal-dorsal image in positive.

The Shroud of Turin Research Project (STURP: members),
summary of conclusions from the 1978 testing.

(After years of exhaustive study and evaluation of the data, STURP issued its Final Report in 1981.
The following official conclusions are reproduced verbatim from that report, from

       No pigments, paints, dyes or stains have been found on the fibrils. X-ray, fluorescence and microchemistry on the fibrils preclude the possibility of paint being used as a method for creating the image. Ultraviolet and infrared evaluation confirm these studies. Computer image enhancement and analysis by a device known as a VP-8 image analyzer show that the image has unique, three-dimensional information encoded in it. Microchemical evaluation has indicated no evidence of any spices, oils, or any biochemicals known to be produced by the body in life or in death. It is clear that there has been a direct contact of the Shroud with a body, which explains certain features such as scourge marks, as well as the blood. However, while this type of contact might explain some of the features of the torso, it is totally incapable of explaining the image of the face with the high resolution that has been amply demonstrated by photography. The basic problem from a scientific point of view is that some explanations which might be tenable from a chemical point of view, are precluded by physics. Contrariwise, certain physical explanations which may be attractive are completely precluded by the chemistry. For an adequate explanation for the image of the Shroud, one must have an explanation which is scientifically sound, from a physical, chemical, biological and medical viewpoint. At the present, this type of solution does not appear to be obtainable by the best efforts of the members of the Shroud Team. Furthermore, experiments in physics and chemistry with old linen have failed to reproduce adequately the phenomenon presented by the Shroud of Turin. The scientific consensus is that the image was produced by something which resulted in oxidation, dehydration and conjugation of the polysaccharide structure of the microfibrils of the linen itself. Such changes can be duplicated in the laboratory by certain chemical and physical processes. A similar type of change in linen can be obtained by sulfuric acid or heat. However, there are no chemical or physical methods known which can account for the totality of the image, nor can any combination of physical, chemical, biological or medical circumstances explain the image adequately.
       Thus, the answer to the question of how the image was produced or what produced the image remains, now, as it has in the past, a mystery.
       We can conclude for now that the Shroud image is that of a real human form of a scourged, crucified man. It is not the product of an artist. The bloodstains are composed of hemoglobin and also give a positive test for serum albumin. The image is an ongoing mystery and until further chemical studies are made, perhaps by this group of scientists, or perhaps by some scientists in the future, the problem remains unsolved.

1988 Carbon-14 tests invalidated, by Dr Raymond Rogers (foto) of the STURP team,
author of the important
A Chemist's Perspective on the Shroud of Turin (2008):
Summary 1 , 2 ; References 1 , 2 , 3 , 4 .

Shroud Science Group International Conference VIII.08: press release.

Joseph Marino & Edwin Prior, The Anomalous Nature of the C-14 Sample of the Shroud of Turin.

The superlative BBC documentary The Silent Witness can now be downloaded for only $8: