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Pixels in the Shroud Image?

In 1992, while taking some photomicrographs of some fiber lifted from the shroud in 1978, Kevin E. Moran noticed something that he called pixels. The term stuck:

At 200x magnification it is seen that these picture elements, or pixels, are very uniformly darkened about 30% over the natural color of the non-imaged fiber. At the boundary between image pixel and clear fiber, there is a sharp change.

 

Later, Ray Rogers would disagree with Moran’s characterization of sharp boundaries. They were, he thought, “polarization effects” caused by a polarizer in the microscope system. Nonetheless, Moran brought the word pixel into the lexicon of shroud image characteristics. And even if Moran’s clear boundaries are not really boundaries, hence pixels in one sense of the word, the idea is still relevant. The image is clearly, unmistakably made of discontinuities of color and it is by visual blending of these picture elements that we see various shades or tones of yellow.

In 2004, I wrote out an interpretation in which I tried to avoid using the word pixel. I sent it to Ray Rogers hoping to solicited his agreement:

A better interpretation might be to say that it appears that much, but not necessarily all, of what we perceive as different shades of color is due to visual blending from concentrations or densities of spots of color that are closely uniform in color.

 

I was groping. I was trying to find a middle ground. In my mind if visual blending was how we perceived the colors in the images then pixels was the right term to use. But I wanted to avoid using the term so I spoke of spots.  “Right,” he wrote back. “But they [the spots of color] are essentially identical in color (spectrum) and somewhat different in color density.”

 

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Seeing Teapots
The Retina
Edge Enhancement
Definition of an Edge
Recalling Constantine VII
Sense of Three Dimensionality
Who Invented What?
The Element of 3D Perception
The Play of Light
The Importance of the Play of Light
Techniques of Artists
Direction of Light
What Do We Think 3D Is?
Scientists Mean Something Else
I Think Therefore I Am
Adding in Z
Plotting in Space
Avoiding Confusion
Rendering on a Computer
The Legend of the Teapot
Artificial Light
Topography
The Height Map
Height Data vs Body Distance
Gabriel Quidor
VP-8 Image Analyzer
Body to Cloth Distance
Picknett and Prince and 3D
Caused by a Lengthy Exposure in the Sun?
Why Picknett and Prince Are Wrong
Cyberspace Speculation
Adjusting Scale
Thanks to Nicholas Allan
The images, closely examined with the aid of microscopes
One Straw-Yellow Color
Pixel, like salt, means different things. Each
Pixels in Photography
Pixels in the Shroud Image?
One Color, Different Density
Impurity Layer Disputed
Small Measurements
Flax Fibers
Chemical Changes and the Impurity Layer
Maillard Reaction
Rogers Theory about Saponaria officinali
Cadaverine and Putrescine
More Image Attributes
Saturation
The Second Face
Superficial
Mind Numbing Realism
Misconceptions About Post Mortem Blood Flow
Hard to Imagine Art in the Realism
Pathological Detail
Crown of Thorns
Wrist Wounds
Without Precedent
Blond Hair Issue
Hair Color Has Nothing to do with Light
Not Really Gaunt
Banding Again