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The World's Largest Commercially Available Ground Control Points Data Set

If your project requires Ground Control Points, look no further. CompassData provides complete global coverage, with more than 45,438 photo identifiable Ground Control Points available right now, and more GCPs being collected all the time.

The control points residing in the CompassData archive have readily view-able metadata indicating the date of collection, the positional quality, and additional supporting data including a control point sketch and photographs of the point taken during collection.

Ground Control Applications: Satellite

Satellite data is improving, but the fact is, the vast majority of satellite imagery available today requires Ground Truth to create accurate maps. Orthorectification without GCPs is inherently inaccurate.

Ground Control Applications: Aerial

When planning an aerial data collection effort, a review of the available CompassData control points in the archive may allow for the use of existing control data, eliminating or reducing the need to send a survey crew into the field, saving you time and money on your project.

Not all points in the archive will be usable in any given photogrammetric project, but they do provide an independent check against existing data, and can provide an excellent starting point for troubleshooting any aerial project control issues, or to provide an initial starting point for image positioning or project layout.

CompassData also provides rapid-response ground control retrieval virtually anywhere in the world at the customers’ desired level of accuracy, and in a timely, cost-effective manner, to supplement GCPs from our archive for their projects.

Data from competitors won’t be perfect, but it will be close. That’s not good enough for CompassData’s Control Freaks. We have the most accurate, precise data in the industry.
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Ground Control
Contrary to popular belief, higher quality aerial or satellite imagery will not replace the need for ground control. In fact, ground control point collection becomes increasingly more important as image quality improves and user expectations increase.
To ensure map accuracy, utilize the Ground Truth of surveyed Ground Control data.

And, for LiDAR Quality Control and Quality Assurance, incorporate Ground Control check points throughout the collection and validation process.

Read what one of our GCP clients has to say:

CompassData Inc GCP's
The largest commercially available collection of Ground Control Points
Written by: Hong Guo
Ground Control Points

"Our Google Geo department bought several hundreds of ground control points from CompassData. The transactions were smooth and the delivery of the data was on time. The staff people are knowledgable and know what they are doing. Really appreciate your business."

Date published: 02/11/2015
5 / 5 stars