3D Models

To creat a 3D model, a drone is flown over and around the area/structure of interest.  Lots of overlapping pictures are taken.  This is similar to the process used for surveys.  The main difference is that in addition to looking down, the drone also takes lots of oblique pictures to so that the sides of structors are also photographed.  The pictures are submitted to a program that processes them into a 3D model. The program looks at all the images for common keypoints and creates a point cloud. The computing process is very complex and requires lots of memory, graphic processors and high speed processor.  Large projects (1000+ images) can take hours or a few days depending on the computer being used.

You can use your mouse to interact with all the 3D models on this page.  The model below can be rotated (x, y, z axis) , moved and zoomed.  Use the mouse left-button to rotate the image.  Use the right-button to move the image.  Use the scroll-wheel to zoom in/out.  It is a little tricky, but with a little practice you will get it.  Please note that is can take a few seconds for the model to  be downloaded into your browser.
This house was created from 79 images
We took 339 pictures for this model of a church.  We also flew a grid pattern over the church property to capture the land around the church (100 images).  Then we flew around the church several times at differemt altitudes and captured another (239 images) mostly oblique images.  All images overlap other images by about 70%.
Animated fly-through of above 3D mesh
We took 81 pictures for thia 3 model.  The purpose is to monitor the area for erosion.  If we shoot ths area again in the future, we will use volumetrics to determine if the sites eroding.  Because the site is surouned by trees, we flew the drone manually.  We perfer to use autonomous modes so we can fly the exact same route in the future.