Block-Adjusted Solutions for Large-Area Mosaics Show Improved Absolute Map Accuracy Products

Jon Proctor

Jon Proctor DigitalGlobe

12E

Utilization of cloud services such as Amazon Web Services enables automated processing of imagery at a scale that was prohibitive to achieve with local compute resources.

DigitalGlobe is utilizing Amazon Web Services to produce Large Area Mosaics that incorporate hundreds of image acquisition events into a single mosaic product. The distributed processing models that are now available have allowed the ability to process large volumes of data within reasonable timelines. These processes include Block Adjustment of Large Area Mosaics.

The Block Adjustment of large datasets greatly improves relative accuracy between image acquisitions and improves the absolute map accuracy of the final orthorectified products. The improved accuracies are achieved through project design, establishing and automation of production procedures, identifying quality check points, and ensuring that projects meet or exceed the project requirements.

Evaluation of orthorectified products from Bundle Adjusted Large Area Mosaics in sites with well-known control has set a new accuracy standard DigitalGlobe mosaics. These products follow requirements for project design, quality control, relative and absolute accuracies as compared to well-known control and have been evaluated to produce repeatable and reliable results. Future products that adhere to the same production standards will adopt a “produced to meet” accuracy statement such as: “This product was produced to meet DigitalGlobe Positional Accuracy Standards for Large Area Mosaics for a ____ m CE90”

11:00 Block-Adjusted Solutions for Large-Area Mosaics Show Improved Absolute Map Accuracy Products, Jon Proctor

January 29 @ 11:00
11:00 — 11:15 (15′)

Mineral B

Jon Proctor

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