Here, we estimated the CD of all delineated trees by assuming a circle equal in area the delineation polygon (i.e. (CD=2 sqrt {CA / pi }), where CA is the delineated crown area.
A dynamic programming optimization is used in the final decision layer to assemble closed polygons delineating building outlines.
Lake catchments were delineated using Thiessen polygons, and surface water chemistry was predicted for sensitivity indicators (calcium, pH, alkalinity, and acid neutralizing capacity).
In Canada, forest inventories are typically derived from interpretation of 1 10,000 or 1 20,000 scale stereo ortho-photography, where forest cover polygons are delineated and stand attributes are estimated by experienced air photo interpreters [50] and field-verified by forest inventory crews, following statistically-based sampling protocols.
Figure 1 shows the map of the region delineated by the polygon within which we perform our study.
Fig. 4 Magnitude-frequency distribution of the 6,497 "main shocks" remaining in the domain delineated by the polygon shown in Fig. 1 over the period 1923 2007 that have depths of <70 km, after applying the Knopoff-Kagan declustering algorithm.
Masking digital polygons were manually delineated to define the extent of the quadrat and mask out large rocks within each image.
These polygons are commonly delineated on medium-scale photography (e.g., 1 15,000) by a photo-interpreter familiar with the inventory area, and displayed and stored in a Geographic Information System (GIS) layer as a forest cover map.
Individual home ranges were delineated as the minimum convex polygons encompassing all foraging locations of a given individual.
The GIS data of historic liquefactions (Wakamatsu 2011) describe newer liquefactions after the World War II that can be delineated on maps or aerial photographs as polygons and describe the first liquefaction that appears in Japanese historical documents (745 A.D). to the last liquefaction within the data collection period (2008 A.D). as point data of the centers of liquefied areas.
