CATALYST has a full set of object-based image analysis (OBIA) tools that can be used to quickly and accurately extract impermeable land area on a per parcel basis. Imagery is segmented based on the shape and spectral properties of features, and training sites representing impermeable and permeable classes are collected.
It was found that using CATALYST’s OBIA tools reduced processing time by 93% and generated results with 88% accuracy compared to manual digitization.
OBIA was performed on 30 residential parcels in the Eatonville neighborhood of Toronto using Geomatica Object Analyst. Generating a vector layer of impermeable area took 20 minutes total.
CATALYST is a PCI Geomatics brand, which has been introduced to put our leading edge technology into the hands of decision makers. We’re a startup – with hundreds of algorithms, scalable solutions, and decades of experience.