How accurate photomaps generated from UAV captured images?

Many questions addressed to us on accuracy of photomaps may get from images captured by UAV. A research done on 2012 investigated this question and published its report with satisfying results. Yes, it is reported that such kinds of photomaps can have accuracy 25-40 mm. No, it is not typo. The report says 25-40 millimeter. Isn’t good enough??? You can read complete report titled “Assessing the Accuracy of Geo-referenced Point Clouds Produced via Multi-View Stereopsis from Unmanned Aerial Vehicle (UAV) Imagery” here.

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