Robot Dogs to Patrol Hong Kong Parks
The Hong Kong Environmental Protection Department (EPD) has deployed a new squad of four-legged assistants to patrol the city’s Wetland Park: robot dogs equipped with advanced artificial intelligence and lidar sensors. These robotic surveyors are tasked with navigating complex terrain to monitor the health and status of the local vegetation. By utilizing lidar technology, the robots can autonomously scan the environment and capture precise data on tree locations, heights, crown widths, and stem lengths. This data is then processed to create detailed 3D models of the forest, allowing officials to assess the ecosystem with unprecedented accuracy.

The significance of this automated approach lies in its massive efficiency and safety improvements over traditional methods. What previously took human teams a full day to manually survey can now be completed by the laser-equipped robots in just 30 to 60 minutes. Furthermore, these agile machines can easily traverse steep slopes and dense vegetation that would be difficult or dangerous for human workers. This speed and accessibility are crucial for the EPD’s Environmental Impact Assessments, particularly as they prepare for the massive “Northern Metropolis” development project, ensuring that conservation efforts keep pace with rapid urban expansion.
For those interested in the technical workflow, this application showcases a perfect marriage of mobile robotics and remote sensing. The robots utilize a combination of visual cameras for AI object recognition and lidar for spatial mapping. This dual-sensor approach not only speeds up the workflow but also generates objective, scientifically rigorous data sets that are transparent and comprehensive. As the EPD continues to refine these systems, the project serves as a model for how smart city technology can be leveraged to protect natural heritage sites, proving that the future of forestry management is likely to be autonomous.
https://interestingengineering.com/ai-robotics/ai-laser-robot-dogs-protect-hong-kong-trees
Written by Adam Clark. Adam has spent the past 13 years exploring the world from above by using drones, satellites, and mapping tools to better understand our landscapes. Connect with him on LinkedIn: Adam Clark















