iWitnessPRO-V4 was used to generate a dimensionally accurate and visually stunning 3D reconstruction of a wooden barn, fences, tractor, trailer & surrounding landscape from imagery recorded from a multi-copter UAV flying at 60m above ground, viewing obliquely to the barn over a distance of around 90m, which produced an image scale of 1:2500.

Some 49 images were captured with a 36 megapixel Sony a7R camera, and these were processed fully automatically by iWitnessPRO-V4 in less than 1 hour. The approximate object-space accuracy achieved was 2cm (assessed against surveyed checkpoints), with over 12,000,000 points being generated in the final dense point cloud.

Click here for an interactive view of the 3D result (displays best with Google Chrome) generated by iWitnessPRO-V4.

The following images show the network geometry and various views of the textured 3D model of the scene.

UAV imagery kindly provided by Keystone Aerial Surveys (USA), April 2016. Photogrammetry performed using iWitnessPRO-V4.