ROS grayscale display

1. Open ROS environment:

   roscore&
   

2. Enter the folder where ros package is located to initialize the environment variables:

   source ./devel/setup.bash
   

3. Run the launch file:

   roslaunch dmcam_ros start.launch
   

4. Show grayscale command:

   rosrun image_view image_view image:=/smarttof/image_gray
   
   The grayscale image is shown below：