Photogrammetry M40 Sherman Tank Process
My process on the creation of a M40 Sherman Tank utilizing Photogrammetry. This is ongoing and will post more over time. I posted the Before and After (WIP) of the Front and Back of the tank, still need more cleanup on the body, a few joint seams and bolt pass.
Screenshot from Agisoft
Before and 'After' on the cleanup of the geometry output from Agisoft.
Before and 'After' on the cleanup of the geometry output from Agisoft.
More Zbrush cleanup on the Tank, considered close the final.
Retopologized Zbrush mesh inside Topogun. Unwrapped the unique pieces in Headus UVLayout.
WIP shot inside Unreal. Imported Low Poly mesh into Agisoft Photoscan and projected texture onto the mesh. WIll need to rebake once the suspension, wheels, cages and tread are duplicated. Artifacts from the projection need to be edited in Photoshop.
A total of 3 UV sets were created. UV Set 1 has a unique set of UV's, that allows to take advantage of the photo projection inside Agisoft. UV Set 0 has the UV's stacked on top of each other to retain sharpness in the normal and AO bake - essentailly giving me the best of both worlds, unique albedo with sharp normal/ao map. UV Set 3 is for the Lightmap.
Unique pieces in the suspension, wheel, cages and exhaust have been broken out and their UV's divided up between 3 different sets to take advantage of the unique albedo texturing and the sharp normal and ao bakes. The tread is still to go and albedo clean up is still needed, along with a proper Roughness map.
Added Tread, suspension wheels, UV corrections. Roughness is still needed. The Tread, while taking the proprotions from the photogrammetry tread, the texture was created inside Quixel Studio.
Made additional UV, geometry and AO texture corrections, added a first pass roughness map, generated inside of Quixel Studio.
Need to adjust the UV's on the tread draped on the tank, straps on the gear, add the shovel, crowbars and pick axes, then make some tweaks to the normals for the body of the tank.
Continue to add accessories, make roughness map adjustments, tweak UV's and AO. Need to finalize lighting and work on the ground for a better display, add in rope to secure all the gear.
