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Author Topic: GCP error (m) for each image  (Read 1465 times)

lvargo13

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GCP error (m) for each image
« on: August 16, 2017, 06:10:33 AM »
Hello,

I'm wondering if it's possible to get the error in meters for each image in a project from GCPs. I've identified at least 3 GCPs in each image, and can see the error of each GCP in meters and pixels (the GCP_errors figure attached). And the 'Show Info' for each GCP shows the error in pixels for each image (pixel_error figure attached). But I'd like to know a mean error for each image in the project in meters- is that possible?

Thanks,
Lauren

Alexey Pasumansky

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Re: GCP error (m) for each image
« Reply #1 on: August 16, 2017, 05:11:28 PM »
Hello Lauren,

It can be performed via Python scripting. But note that the error in meters in this case will be calculated as the distance between two points corresponding to the intersection of the surface (in script you can use sparse cloud, dense cloud, mesh, tiled model) with the rays going through the camera center and projection of the marker on the image.
Best regards,
Alexey Pasumansky,
Agisoft LLC