Assessing image-to-ground accuracy

You can assess the accuracy of the sensor model or a computed digital elevation model (DEM). The relationship between image and ground is established by running a bundle adjustment. In the Image-to-Ground Computation window, you can collect accuracy-control points on stereo-image pairs. OrthoEngine uses the accuracy-control points with the math-model solution to determine the ground coordinates (easting, northing, and elevation). After you collect a statistically significant number of accuracy control points, you can use them to verify the model accuracy.

For more information, see:

  1. Opening the Image-to-Ground Computation window
  2. Collecting accuracy-control points
  3. Editing accuracy-control points
  4. Removing accuracy-control points
  5. Clearing accuracy-control points
Parent topic: Collecting control points and computing the math models
Previous topic: Processing ADS imagery

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