Sioux Falls was built on quartzite. In the 19th century, when the first settlers arrived they found that wood was scarce. After Sioux Falls became established, local entrepreneurs realized the pink quartzite that rose in great ripples and low plateaus in the area could be quarried and used for street pavers, buildings and other things.
I don't know where this particular pile of quartzite blocks came from. The pile sits on the west side of Falls Park amidst grass, trees and more unquarried quartzite rising out of the ground. I thought it might be fun to model it just to see how much detail I could capture.
I used an LG G4 phone to snap the photos. I used the manual function and captured all the photos in raw/DNG. I snapped a total of 59 photos.
At home, I imported the photos into Adobe Lightroom where I then worked to even out the exposures, sharpened the details and boosted the contrast slightly. After a final check, I exported the photos as 300ppi JPGs. I know, I should have used TIFs, but I wasn't sure that it would make much of a difference.
After importing the folder containing the photos into Agisoft Photoscan, I used the 'High' settings from the creation of the sparse cloud to the dense cloud to the mesh and finally the texture.
When I was finished, I was surprised at the detail of the model. If you look on top of the pile, you can actually see an individual leaf that was rendered accurately even though it was whisper thin and sticking upwards!
I found the model was far too large to share, so I imported it into Autodesk Remake to carefully reduce the complexity of the mesh while still maintaining the best possible details. Once I was satisfied, I exported the model.
I'm still surprised at the level of detail this hugely reduced model has.