Stand Boundary Update Project in Brazil
Following a large land acquisition project, MB&G was contracted to validate and update the spatial location of the existing stands dataset to match newly acquired and orthorectified 50 cm Pleiades base imagery. Image segmentation was used to divide the Pleiades imagery into spectrally similar polygons (stands), as shown in the image to the right with red lines. Those segments were then compared to the original stand boundaries (shown in blue) in an automated approach to develop final, spatially-updated, stand boundaries (shown in orange).
The client also requested that the original stand labels be retained during the spatial update process. MB&G performed a percent overlay analysis between the final stands and the original stands to pull through the original stand labels. In some cases, a stand was lost due to the significant mis-registration between the original stands dataset and the newly derived stands. These stands were identified and provided to our client for further review.
While final stand boundaries with updated labels was the only contracted deliverable, our team also provided the segmented dataset as a value added service. This extra dataset identified stand anomalies, such as unsuccessful regrowth or stand mortality.