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PCI’s team to map Philippines using GeoEye imagery

Ontario, Canada: PCI Geomatics announced that it would provide advanced image processing services to Geo-Surveys and Mapping Inc. (GSMI) to produce a high-quality 0.5 meter pansharpened, colour-balanced mosaic of the Philippines. The final deliverable will be used by the Department of Agriculture in the Philippines.

GSMI turned to PCI’s Professional Production team to process over 304,000 square kilometres of
GeoEye imagery. A key deciding factor for GSMI in selecting PCI’s Professional Production Services was to reduce overall project risk by leveraging the expertise and know-how developed at PCI for the last 30 years, ensuring that high-quality final deliverables are produced in a timely manner for their end customer.

“There are some considerable challenges in mapping the Philippines, an archipelago comprising more than 7,100 islands,” said Brad Schmidt, VP of Sales and Marketing at PCI Geomatics. “Persistent cloud cover, discontinuous land areas, and incomplete coverage are some of the issues that we must address.

The GeoImaging Accelerator (GXL) system used by the Professional Production team leverages industry leading colour balancing algorithms that were developed in-house; these have been very successful in dealing with the discontinuous imagery. Using GXL, PCI is working diligently to meet the geometric and radiometric accuracy requirements in a timely fashion.”

The imagery collected by GeoEye consists of 0.5 m panchromatic and 2.0 m multispectral data, which is processed by PCI Geomatics in an end-to-end workflow that includes multiple processing steps, controlled through quality assurance methods. The workflow includes orthorectification, pansharpening, and mosaicking – the resolution of the final product will be 0.5 m, and the target accuracy will be 2.0 m CE90– providing a base data set that can be used to produce 1:2,500 scale maps. The project is expected to be completed over an 18 month period; its duration is mainly driven by the availability of cloud-free imagery.

Source: PCI Geomatics