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.