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I have an experiment with the specimen 100m long and 3m wide. I would like to capture the the image of entire specimen (from top) for fixed time intervals to analyze the behavior with time using some image analysis techniques.

As I need very good precision and length is 100m, Is there any established method to capture the image of such a long specimens.

  1. I am thinking of having multiple cameras hanging on the top to capture the image.Can we control all the cameras to take picture at the same time and later combine them into one.
  2. Is there any camera device which moves and captures the entire photo by itself allowing some time lag. (some kind of panorama picture with automotion).
  3. Approximately how many cameras require for such a job.
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I like the scale of this question. I guess one answer would be to conduct the experiment next to a skyscraper or tower block, so you can put your camera on a tripod on the top floor and look down :) –  laurencemadill Feb 21 at 15:06
    
I like your imagination. Thanks. –  user26249 Feb 24 at 11:31
    
I guess you probably can't easily relocate an experiment of that size! :) –  laurencemadill Feb 24 at 12:02
    
Yes, you are right. It is very bulky setup.. –  user26249 Feb 25 at 6:57

1 Answer 1

up vote 7 down vote accepted

There's a limited amount of information on what the experiment actually is, so it's hard to give a full answer. If the question is updated with more detail I'll try to revise this answer.

1.I am thinking of having multiple cameras hanging on the top to capture the image. Can we control all the cameras to take picture at the same time and later combine them into one?

Yes, that's not a problem. There are even free applications such as Microsoft Image Composite Editor and Hugin. That said, depending on what your experiment is the Parallax Errors introduced could become a significant problem.

2.Is there any camera device which moves and captures the entire photo by itself allowing some time lag. (some kind of panorama picture with automation).

Yes, they are called Line Scan cameras, typically they're used in industrial control systems and they just take an image of a single line of pixels at a time and the camera moves over the length of the experiment.

You'd probably have to build the rig / mounting to make it cover your experiment.

You can also rig a normal camera, like a DSLR to a rig or dolly which can also be automated.

3.Approximately how many cameras require for such a job.

Anything from one upwards. For a 3D object you may want more cameras to give you perspective or create a stereoscopic image or for a fast moving object you may want more cameras to keep up with the action.

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Thanks for the answer, Line scan cameras seems to be better solution for my requirement. As the experiment in the planning stage, I am not able to provide with a pictures or etc to give more clarity. Basically, I would like to observe the flow phenomenon with time along the 100m length stationary object. –  user26249 Feb 24 at 11:28

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