An app for tree trunk diameter estimation from coarse optical depth maps

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Zhengpeng Feng, Mingyue Xie, Amelia Holcomb, Srinivasan Keshav

Published: 01 Jan 2024, Last Modified: 24 Oct 2025Ecol. Informatics 2024EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Highlights•An AR- and AI-based app for all-in-one tree diameter estimation on entry-level smartphones.•App achieves a MAE of 1.66 cm, comparable to other high-end phone-based solutions.•Facilitates forest inventories by enabling near real-time, low-cost measurements.•Validated across diverse environments, showing robustness under various conditions.•App speeds up data collection, being 5 times faster than traditional methods.