Grzegorz Baran
Expert Materials Artist at Ubisoft Reflections
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Sand - Photogrammetry based Environment Material

Another scan I turned into PBR environment material. This one was captured with the AR400 flash used and full cross polarisation. This way regardless the light changes cause by inconsistent cloud cover, I managed to maintain high level of light consistency.
The materials was added my material's library:
https://gum.co/WJAQy
as 'gb_sand289'

PBR preview: Albedo / Normal / Height / Roughness / Ambient Occlusion

PBR preview: Albedo / Normal / Height / Roughness / Ambient Occlusion

Tiling preview rendered in Marmoset Toolbag 4

Source location - where I took 295 images with the flash used to guarantee light consistency. As you can see the sky was very cloudy but clouds has some gaps letting the sun light dig through them from time to time

Source location - where I took 295 images with the flash used to guarantee light consistency. As you can see the sky was very cloudy but clouds has some gaps letting the sun light dig through them from time to time

Source location - surface details after the capture pass.Since the sand surface is very fragile and destructive we need to be careful during the capture as we cannot go back to repeat any shot. Also we need to move quickly as sand is in constant motion.

Source location - surface details after the capture pass.Since the sand surface is very fragile and destructive we need to be careful during the capture as we cannot go back to repeat any shot. Also we need to move quickly as sand is in constant motion.

Source location - surface details with my shoe used as a scale reference

Source location - surface details with my shoe used as a scale reference

A macro close-up to show actual level of surface complexity :D. Its a lot of work to take this type of shot but I really love these as they help for better substance understanding and to some degree explains light response.

A macro close-up to show actual level of surface complexity :D. Its a lot of work to take this type of shot but I really love these as they help for better substance understanding and to some degree explains light response.

Agisoft Metashape - 134mln poly heavy photogrammetry reconstruction based on 295 24Mpx images

Agisoft Metashape - 134mln poly heavy photogrammetry reconstruction based on 295 24Mpx images

PhotoLab - color calibration and contrast tweaks - before/after. With the Photolab I turned all RAW data into 16bits TIFF files which were used for the actual 3D reconstruction. Camera settings visible on top left corner :)

PhotoLab - color calibration and contrast tweaks - before/after. With the Photolab I turned all RAW data into 16bits TIFF files which were used for the actual 3D reconstruction. Camera settings visible on top left corner :)

ZBrush - low poly model creation and alignment for PBR texture baking. I used captured rulers as a scale reference so I covered exact area I wanted.

ZBrush - low poly model creation and alignment for PBR texture baking. I used captured rulers as a scale reference so I covered exact area I wanted.

The material and texture set was added to my material's library: https://gum.co/WJAQy as 'gb_sand289'

The material and texture set was added to my material's library:
https://gum.co/WJAQy
as 'gb_sand289'

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