is it possible to use one of the D400 cameras/modules with the IR turned off ?

[emanuroc]

Is it possible to use one of the D400 cameras/modules with the IR turned off and using only the disparity images in the visible spectrum only to create depth images? we would like to test the d400 sensors underwater but, since water greatly limits the max allowed IR depth distance (as https://ieeexplore.ieee.org/document/7477644) , we would like to avoid to rely on IR projectors and sensing. Thanks

[MartyG · Accepted solution]

RealSense cameras will work when immersed underwater if in a waterproof container. The general rule for visibility is that if a human can see something underwater then the camera can see it too. The SDK has a tutorial in the Python language for sensing underwater and through aquarium glass.

https://github.com/IntelRealSense/librealsense/blob/jupyter/notebooks/depth_under_water.ipynb

You are correct though that underwater the visibility is affected by the properties of the water. You can certainly stream with depth only if you wish, as illustrated by the image below from the RealSense Viewer program with depth stream active and IR streams turned off.

[emanuroc]

this is fantastic! thanks