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Author Topic: export points and marker's image coordinates  (Read 5885 times)

JMR

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export points and marker's image coordinates
« on: May 15, 2012, 01:45:08 PM »
I guess there is no way of import/export pixel/image coordinates for feature points nor for markers. Am I wrong?
I think it could be an interesting addition as it would allow us test different feature extraction algorithms or use third party tools to place markers

Alexey Pasumansky

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Re: export points and marker's image coordinates
« Reply #1 on: May 15, 2012, 02:53:39 PM »
Hello LFA,

It is possible to export marker projection on any (or every) image using Python scripts.

And saving sparse point cloud in bundler format (using Tools -> Export cameras command) will give you the set of feature points with their coordinates and projections.
Best regards,
Alexey Pasumansky,
Agisoft LLC

Oli63

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Re: export points and marker's image coordinates
« Reply #2 on: May 15, 2012, 05:34:18 PM »
Thank you, good to know this.

What's interesting to me is, what precision do you guys achieve with your models? My own errors range between 1 and 10 cm horizontally and around 20 cm vertically. Currently I am thinking about ways how to improve these values, especially vertically.

Oliver
GeoSpy Aerial Imaging & Mapping GmbH
www.geospy.at

fpbv

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Re: export points and marker's image coordinates
« Reply #3 on: May 15, 2012, 09:39:41 PM »
Oliver

Are you talking about aerial photos?
If so I think you are good enough, otherwise you should see your makers positions and even about the camera resolution/lens.