Is it possible to restructured an upright object from its shadow only,

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In summary, the conversation discusses the possibility of reconstructing an upright object solely from its shadow, using examples such as a cube or any other model. It also touches upon the difference between the shadows of a disk and a sphere, and how the position of the light source affects the shadow. The topic of transparent objects, specifically a glass cube, is also brought up in relation to the visibility of its edges in its shadow.
  • #1
rajeshmarndi
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is it possible to restructured an upright object from its shadow only, for example an cube or any model?
 
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  • #2


Can you tell the difference between the shadow of a disk and that of a sphere?
 
  • #3


No.
If the light source is not on top of the model, the shadow will be different.
But i understand any vertices that is hidden between the object and the shadow will not be revealed.
 
  • #4


if the object is an transparent like an glass cube where we can see its edges on its shadow?
and again if the light source is not from top and from different angle.
 

1. Can an upright object be reconstructed from its shadow only?

Yes, it is possible to reconstruct an upright object from its shadow only. This process is known as shadowgrammetry and involves using mathematical algorithms to analyze the shadow and determine the shape and dimensions of the object.

2. What factors affect the accuracy of reconstructing an object from its shadow?

The accuracy of reconstructing an object from its shadow depends on various factors such as lighting conditions, the shape and texture of the object, and the angle of the light source. The more distinct and detailed the shadow is, the more accurate the reconstruction will be.

3. Are there any limitations to reconstructing an object from its shadow only?

Yes, there are limitations to this process. If the object is complex or has intricate details, it may be difficult to accurately reconstruct it from its shadow alone. Additionally, if the lighting conditions are poor or the object is not standing upright, the reconstruction may not be as accurate.

4. Is shadowgrammetry a widely used technique in the scientific community?

Yes, shadowgrammetry is a well-established technique used in various fields such as archaeology, astronomy, and computer graphics. It has proven to be a valuable tool for reconstructing objects and understanding their dimensions and properties.

5. Can shadowgrammetry be used to reconstruct objects of any size?

Yes, shadowgrammetry can be used to reconstruct objects of any size as long as their shadows can be captured and analyzed. However, for larger objects, the accuracy of the reconstruction may be affected by the distance between the object and the light source.

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