How to extract depth values for particular [x ,y] coordinate depth_value = depth_map_np[y][x]

[SL-PY]

Extract point cloud data of particular detection and removing background point cloud

how do you get thoses values ? To get the depth values you shoudl retrieve the MEASURE::DEPTH which is a one channel matrix containing Z values. It looks like you display Point Cloud values from this sample: In this case the Depth (Z) is the 3rd value. Its unit depends the InitParameters you set.