All Questions
8
questions
0
votes
0
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83
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How to calculate Distance $D$ to object from a camera with known $H$?
I am using algorithm to draw a bounding box around object when they appear in camera as shown in attached image. The main confusion is that i consider the object closer to camera when the Distance $D$ ...
- 101
-1
votes
4
answers
451
views
What if cameras get better than our eyes?
What happens when camera technology evolves so dramatically that (without considering zooming) camera lenses get “better” than our human eye?
Do we see the footage in higher definition, or do we ...
- 179
0
votes
1
answer
113
views
How our eye see real images formed by pinhole camera? [duplicate]
How do we(eye) see real image form in pinhole camera?
1.Are rays that are forming image pass through screen and reach our eye help us too see it ?
OR
Light rays from hole from where we are looking at ...
user313211
1
vote
2
answers
366
views
Astigmatism and focusing a camera
A thought experiment: assume I have poor eyesight, but using a viewfinder or an LCD screen I was able to focus a camera on an object or landscape with what seemed to me perfect clarity. I took the ...
- 111
0
votes
0
answers
31
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Why is the focal length of a camera inextricably linked to a different perspective?
The human eye can focus on different distances without ever changing the perspective. Why is the change of focal length in a camera, on the other hand, always linked to a change in perspective? Is the ...
- 3
3
votes
0
answers
139
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Viewing totality though an unfiltered telescope [closed]
DISCLAIMER: This question is for informational purposes only and the ensuing discussion must not be construed as safety advice.
There seems to be a consensus among experts that partial eclipse should ...
- 411
2
votes
2
answers
195
views
Why does image noise happen?
Why are digital images shot with a high iso (which means the camera sensor is much more sensitive to light) so much grainer than pictures taken with a lower iso? Here is an example of the type of ...
- 129
1
vote
1
answer
5k
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What is the visible spectrum to common mobile phone cameras? [closed]
With my iPhone I can see the IR emitter on a tv remote, which could be around 940nm, but I thought cameras generally tried to filter for the human visible spectrum (i.e. sub 700nm). I'm trying an ...
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