Range sigma of VL53L5CX is too low

[Yli.9]

Hi,

I have read the tutorial and document about VL53L5CX. It says that the distance of targets and the range sigma are extracted from histogram by assuming a normal distribution (the distance and range sigma are the mean and standard variance of the distribution, respectively). However, i find the returned range sigma is always much lower than the actual ones. For example, the returned sigma rarely exceed 5 cm, but the actual sigma may be 2-5 times, which means that it is usually larger than 10 cm, and can even reach 20-30 cm.

I test this by seting up a device suit which align L5 and a high-resolution depth sensor (RealSense D435 which have a depth resolution of 640x480). 

What is the reason behind this? Are there some post-processing algorithms, if yes, could you brifely describe how they work, so maybe i could recover the real standard variance which is important in my research.

Many thanks,

Yijin.

[Anne BIGOT]

Hello,

Your question has been addressed internally. We will come back to you as soon as possible.

Regards

Anne

[Yli.9]

Thank you :)

I have sent the collected data to John. Hope it helps.