Skip to Main Content

LiDAR-based tree inventory – not Sci-Fi anymore

Drs. Gang Shao, Guofan Shao, & Songlin Fei of Purdue Forestry and Natural Resources recently published the article - Delineation of individual deciduous trees in plantations with low-density LiDAR data - in the International Journal of Remote Sensing.

In this work, Light Detection and Ranging (LiDAR) data was used to delineate individual deciduous trees using a point-density-based algorithm. First a high-resolution point density model (PDM) was developed from low-density LiDAR point cloud to locate individual trees through the horizontal spatial distribution of LiDAR points. Then, individual tree crowns and associated attributes were delineated with a 2D marker-controlled watershed segmentation. Additionally, the PDM-based approach was compared with a conventional canopy height model (CHM) based delineation. The PDM-based approach produced an 89% detection accuracy to identify deciduous trees and tree attributes derived from the PDM-based algorithm explained 81% and 83% of tree height and crown width variations of forest stands, respectively.


Light Detection And Ranging (LiDAR) crown detection predicts tree diameter with a correlation coefficient of 0.83.

Digital Agriculture Posts

Different varieties of rice growing in a field
Machine-learning model demonstrates effect of public breeding on rice yields in climate change

Climate change, extreme weather events, unprecedented records in temperatures and higher, acidic...

Read More
Adam Shanks - calculating data
Private databases for your farm

Private databases have many applications in agriculture and beyond, such as home life and...

Read More
uav data on a monitor
Data-Driven Seminar Series

Purdue College of Agriculture presents a seminar series featuring experts in data science,...

Read More
From centuries-old, hand-drawn maps to LiDAR lasers & the role of both in forestry
From centuries-old, hand-drawn maps to LiDAR lasers & the role of both in forestry

An army of bow saws and boots march through dense thickets of forest patches in the Chicago...

Read More
The walnut plantation at Martell Forest.
Detection & Prediction: How technology is fighting a future of tree diseases and invasive insects

The black walnut tree (Juglans nigra), prized for its rich, dark color in hardwood furniture and...

Read More
Ismail Olaniyi flies a UAV up above the trees.
The crossroads between lemon trees and technology

In warmer southern and western states, citrus orchards are important for feeding and bringing...

Read More
To Top