What are the information represented by echo the topic of camera_info and image_raw?
Hi, I am using a multi camera plugin with SDF and the left and right images are published well in Rviz2. I wish to know the depth/distance of the object from the camera based on the images produced hence I try to echo the topic of camera_info and image_raw. For camera_info, I get: d : - 0.0 - 0.0 - 0.0 - 0.0 - 0.0
k: - 476.703... - 0.0 - 400.5 - 0.0 - 476.703... - 400.5 - 0.0 - 0.0 - 0.0 - 1.0
r: - 1.0 - 0.0 - 0.0 - 0.0 - 1.0 - 0.0 - 0.0 - 0.0 - 1.0
p: - same as k
while for image_raw topic, i get number range from 153 to 158.
May i know what are all these information means? And how can I use these information for my purpose to identify the distance of object?
Thank you in advanced.