Hi. I am writing you to get help on Hokuyo3d lidar. The model is Hokuyo YVT-35lx. We have an issue on the lidar. We can get data from the lidar using ROS installed on RaspberryPi 3; ROS distro is melodic. The lidar’s Datasheet depicts that the lidar must have 2590 or more spots. But when we calculate spots, it gives us 2100-2200 spots in a field when we put a black object in front of the lidar. But when we take away the black object, the number changes around 2600-2700 which is acceptable. Because the minimum number of the spots should be got as 2590. What is the reason? We are using the hokuyo github code. https://github.com/at-wat/hokuyo3d
We think laser beam does not return back when it meets a black thing. Because of what black color absorb all the rays. That is way the number of points decreases. If the laser beam does not return back, Which values does the hokuyo lidar get as points, intensity? How does the hokuyo github get the values that the laser beam does not return back to the lidar sensor? I mean in which form have those values (Point Clouds, intensity) been shown when the laser beam does not return back to the lidar sensor? As zero or at a weird form? In which form? It is the important problem for our project. If you can’t understand what we mean, please feel free to ask. While we are running Rviz software on terminal, it shows us those unreturned values as an empty space. We wanna see the values that the lidar sensor should give us values such as a zero or a different value when the laser beam does not return back to the sensor. If you have an opinion, please help us. I look forward to hearing from you.
Hi. I am writing you to get help on Hokuyo3d lidar. The model is Hokuyo YVT-35lx. We have an issue on the lidar. We can get data from the lidar using ROS installed on RaspberryPi 3; ROS distro is melodic. The lidar’s Datasheet depicts that the lidar must have 2590 or more spots. But when we calculate spots, it gives us 2100-2200 spots in a field when we put a black object in front of the lidar. But when we take away the black object, the number changes around 2600-2700 which is acceptable. Because the minimum number of the spots should be got as 2590. What is the reason? We are using the hokuyo github code. https://github.com/at-wat/hokuyo3d We think laser beam does not return back when it meets a black thing. Because of what black color absorb all the rays. That is way the number of points decreases. If the laser beam does not return back, Which values does the hokuyo lidar get as points, intensity? How does the hokuyo github get the values that the laser beam does not return back to the lidar sensor? I mean in which form have those values (Point Clouds, intensity) been shown when the laser beam does not return back to the lidar sensor? As zero or at a weird form? In which form? It is the important problem for our project. If you can’t understand what we mean, please feel free to ask. While we are running Rviz software on terminal, it shows us those unreturned values as an empty space. We wanna see the values that the lidar sensor should give us values such as a zero or a different value when the laser beam does not return back to the sensor. If you have an opinion, please help us. I look forward to hearing from you.