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Hello,

It seems your package path doesn't have the required workspace / folders updated in it. Try executing echo $ROS_PACKAGE_PATH to check if the appropriate directory is indeed in your package path. If not, read up how to add a directory to your package path ( export ROS_PACKAGE_PATH .....)

Also, the values of <yourstreamtopic> and <yourcamerainfo_topic> typically are the following for usb_cam. (You've even mentioned this in your launch file)

So, < yourstreamtopic > is /usb_cam/image_raw

I.e., you should be running /image:=/usb_cam/image_raw

and < yourcamerainfo_topic > is /usb_cam/camera_info

Hello,

First of all, lsd_slam itself is a package. It doesn't need to be inside another package (I assume that my_package is a package). You probably want to rectify that.

It seems your package path doesn't have the required workspace / folders updated in it. Try executing echo $ROS_PACKAGE_PATH to check if the appropriate directory is indeed in your package path. If not, read up how to add a directory to your package path ( export ROS_PACKAGE_PATH .....)

Also, the values of <yourstreamtopic> and <yourcamerainfo_topic> typically are the following for usb_cam. (You've even mentioned this in your launch file)

So, < yourstreamtopic > is /usb_cam/image_raw

I.e., you should be running /image:=/usb_cam/image_raw

and < yourcamerainfo_topic > is /usb_cam/camera_info