Collision Prevention with PX4 using camera

[bhaskar-glitch]

Hi,
I’m trying to implement Collision Prevention with Pixhawk 2.4.8 with px4 1.11.1 firmware flashed in it. I’m using realsense d435i camera with jetson nano. https://docs.px4.io/main/en/computer_vision/collision_prevention.html as mentioned here i have changed all the param required but QGC mavlink inspector isn’t showing Obstacle Distance data. I am unable to find the exact issue. Please help
Also let me know all the steps i have to do to implement collision prevention in manual flight with RC