|Mar 04, 2014, 08:22 PM|
Joined Feb 2014
Photogrammetry equipment question.
I have a couple of questions.
If one is using Ardupilot for AP and wants properly georeferenced images, is the only option to utilize a camera with built in GPS? Or is this simply the easiest method? What would the alternative be and the methodology behind assigning GPS data to the photographs? Any experiences?
From what I've read the GPS on cameras is not necessarily accurate, and is not meant to operate with the camera pointed towards the ground.
|Mar 05, 2014, 05:23 PM|
Are you using ArcMap for georeferencing?
If so, you can enter your flight log into ArcMap as XYData from an Excel file. That will locate your flight path, then position individual images on the flight path. ArcMap then allows you to georeference the image by identifying landmarks.
The attachment is from ArcMap 10.1. The red dots are several passes by the airplane. The flight path is from bottom right to left middle. The photos are numbered 70, 71, 72... This image is photo 71. The airplane was banked a bit to the left so the dot is not in the center even though it is an orthophoto. ArcMap has warped the image to fit for orthorectification.
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