Selection of stereo camera

cameraselection

asked 2018-09-05 19:46:56 -0600

xprior
1 ●1

In order to compute disparity maps i will use a stereo camera mounted over a mobile robot, however there seems to be endless possibilities. I would like to know some examples to produce nice disparity results with:

USB Cameras
CSI Cameras but which control board should i use with?
Prebuilt stereo cameras

For each option it would be nice to have a best and an affordable option like <200€. Stuff like global shutter and synchronization are important right?

If you happen to know a better method please tell me about it.

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answered 2018-09-06 05:56:32 -0600

kbarni

4134 ●1 ●13 ●49

The choice will depend a lot on the application. In what environment will the robot work? What is the power and space availability? What will be the working distance of the camera?

For example for a slow-moving robot I used two webcams with rolling shutter and without synchronization, it worked quite well for the required precision.

A few things to consider:

If your robot won't work in sunlight, a RGB-D camera (Kinect-like) is the best. It's very precise and gives you the distance in mm for each pixel. It also fits in your budget.
For distances over 2-3m, forget the stereo cameras, you'll have to use Lidars.
Professional systems (global shutter cameras with trigger) won't fit in your budget. A single camera like that costs at least 5-600€ with lens (2MPixels). They also need a performant embedded computer to transfer the data and get the disparity map in real time.