passive illumination mode for D435i/L515

February 03, 2020 16:35

Hi,

Is it possible to use environmental IR-radiadion instead of active IR illumination (so to say kind of passive mode) for the D435 or new LiDAR L515 depth sensors? I'm interested in short range observations and 3D-measurement of warm objects.

Thanks in Advance for Information.

Regards,

Dimitrii

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1 comment

MartyG

February 03, 2020 17:02

Edited
The RealSense 400 Series cameras can use natural ambient light instead of their built-in IR projector to analyse the depth in the scene. Unlike many depth cameras, the stronger the light, the better the 400 Series performs. In a well-lit scene, the IR projector could be turned off.

The final page (Section 15) of Intel's camera tuning guide offers advice on using the camera in natural light conditions.

https://www.intelrealsense.com/wp-content/uploads/2019/11/BKMs_Tuning_RealSense_D4xx_Cam.pdf

The forthcoming L515 is Lidar depth-sensing technology, rather than the Stereo depth sensing technology used in the 400 Series. It is best suited for use indoors or in controlled lighting conditions.
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