3

I want to implement a FPGA-based real-time stereo vision system for long range (up to 100m) depth estimation. Also, I want to use two ip cameras in the system. I have calculated depth error using the equation below with these parameteres:

baseline = 1m (at the expense of increased frontal blind zone area), z = 100m, f = 4mm, pixel_size = 4um, disparity_accuracy = 0.25px,

depth_error = dz = ((z^2)/b.f)*dp = 2.5m

My questions are: Are these calculations and equation above valid for long range stereo vision?

Are there any other considerations for designing this long range stereo vision system which may not be important in typical (short range) stereo vision systems?

I will be grateful for any information you can provide.

Mr. Nobody
  • 191
  • 1
  • 3
  • Are you sure about your focal length? 4mm sounds too short if you want to see something in this distance. – FooTheBar Mar 06 '17 at 18:17
  • @FooBar : I am a little confused. Focal length has nothing to do with subject distance and just determine field of view. Am I right? – Mr. Nobody Mar 06 '17 at 22:15
  • exactly. and if your field of view is too large, objects in a large distance will only have some pixels on them so your matching will be difficult. – FooTheBar Mar 07 '17 at 07:47
  • Thank you @FooBar . So, using a camera with larger focal length have better results in larger distances. Is there any side effect for using larger focal length in long range? I have asked this question because it seems everything becomes better for long range if we use a camera with larger focal length? – Mr. Nobody Mar 07 '17 at 08:10
  • Did you find the answer to this? if this is not possible do you know if there is any long range stereo/depth camera for 100/150meters range? – Hossein Jan 10 '22 at 12:27

0 Answers0