This dataset of tree points in urban areas of Los Angeles County was created using imagery from 2020 by a team of researchers at the Urban Forest Ecosystems Institute at Cal Poly (UFEI). This map is based on NAIP imagery from 2020, processed by a convolutional neural network (CNN) which learned to detect trees from a collection of hand-annotated samples. The CNN takes NAIP imagery as input and outputs a confidence map indicating the locations of trees. The individual tree locations are found by local peak finding.

• Find more information about how these points were populated here: https://www.sciencedirect.com/science/article/pii/S1569843224002024

• Find more information about UFEI here: https://ufei.calpoly.edu/

This project was funded by CAL FIRE (award number: 8GB18415) the US Forest Service (award number: 21-CS-11052021-201)