Canadian Forest Service Publications

Characterizing three-dimensional forest structure from digital aerial photogrammetry: a competing or complementary technology to airborne LiDAR? 2016. White, J.C. BC Forest Professional, March – April 2016, pp 12-13

Year: 2016

Available from: Pacific Forestry Centre

Catalog ID: 36660

Language: English

CFS Availability: PDF (request by e-mail)

Plain Language Summary

The article is intended to provide an introduction to the concept of image-based point clouds and how these data compare to LiDAR for forest inventory applications. The capacity to acquire information characterizing three-dimensional (3D) forest vertical structure has revolutionized forest inventories around the globe. While airborne lidar data has been the primary data source for this 3D information, there is growing interest in the use of high spatial resolution digital aerial imagery to generate 3D information to support forest inventory and monitoring. This interest in alternative technologies for 3D information can be attributed to a need to control costs, but also relates to the traditional role that imagery has played in forest inventory, the technical capacity of forest management agencies, and current regulatory requirements. The article provides some background on the use of LiDAR for Enhanced Forest Inventory (EFI) and outlines key differences and similarities in the information content of LiDAR and image-based point clouds are presented. A summary of research to-date related to the use of image-based point clouds for EFI is presented.

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