kinect2 calcul of depth 0 - luminosity

edit

Hi,

I get a depth of 0 when there is an object in the distance of 0 to 1 meter, then it begins to grow to "234"or "326" until the distance of 120 cm and then stay about "234" or "326". I get this kind of result with any depth topic from kinect2_bridge.

Does anyone gt this type of error? What is it due to? The depth in kinect 2 is inverted (while visualizing with kinect2_bridge and also in Protonect).

Thanks!

EDIT:

While reiterating the test with a different luminosity (darker environment), I get a depth of 0 from about 0 to 50 cm (out of range?), then the depth increases from 0 to about 300 between 50 cm to 1m50, then stays about the same value (out of range?).

Any idea? Was it only due to luminosity? What is the optimal luminosity to work with the kinect2?

Thanks