Do you see any "spirality" in this picture?

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SUMMARY

The discussion centers on the perception of spirality in a composite image of craters. Participants noted that vectors placed at the center of each crater, pointing towards the sunlit side, tend to indicate a clockwise direction. However, the consensus suggests that the perceived spirality is an optical illusion created by the arrangement of shadows and the composite nature of the photo, rather than a true mathematical chirality. The varying perspectives highlight the psychological effects of visual interpretation.

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  • Familiarity with composite imaging techniques
  • Basic knowledge of vector analysis
  • Awareness of shadow behavior in photography
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This discussion is beneficial for photographers, visual artists, psychologists studying perception, and anyone interested in the effects of lighting and composition in imagery.

Swamp Thing
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When I look at this picture, the craters seem to have a slight tendency to form rough spirals. (I won't say if they seem to be clockwise or anticlockwise, because I'd like to know what you think -- and I don't want to bias you).

So if you feel there is any spirally stuff going on at all, please reply saying if it is clockwise or anticlockwise going out from the center.

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Starting from the center. move outward and to the right.

1595416982526.png


If you place a little vector at the center of each crater with the head of the vector pointing towards the sun lite side of the crater rim the vectors tend to point clockwise. I don't know if that throws off my judgment. I guess there is a mathematical way to analyze the photo to determine any chirality?
 
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I see no spiral. However, I detect an image of the Virgin Mary...

Zz.
 
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Sometimes it is CW, sometimes CCW. Looks like one of these small tricks our minds play with us.
 
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No. This is a composite photo. You're seeing an artifact of processing.

Different sections of the body are taken at different times - to optimize lighting and contrast - and then stitched together digitally.

Look at the shadows of individual craters. They come from all directions:

1595425095342.png


The "spirality" you're seeing is simply because all shadows are arcing outward.
 
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1595442206399.png
 

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I see this from top down view.
 
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