Grzegorz Baran
Expert Materials Artist at Ubisoft Reflections
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Tree Bark - Photogrammetry based Environment Texture

Another tree bark I captured with exactly the same technique as before. This time I used Dx0 Photolab to preprocess RAW images.
I decided I am going to give another chance to the Photolab as I don't like subscription model Lightroom has. I quite like Photolab's layout and the way it works.
To build lowpoly model I used simple Cylinder in 3DS Max. To make sure UV space is fully covered without any stretching I scaled it into 1:5 proportions. In result texture tiled itself horizontally.
Texture was baked in Substance Designer baker and saved as PNG to store full 16bits data for normal and height maps.
Baked height as usual was fckd up and impossible to tile so I generated one using bent in Designer :)
Just to show how important PBR materials are nowadays and how much impact they might have even when applied into a really simple 3D scene, I created a very simple one using Toolbag 3. Hope anyone will find it useful :)

PBR tex preview

PBR tex preview

Simple 3D scene done in a few minuted in Toolbag3, just to show how much visual impact on final result simple PBR material with HDR lighting can have.

Simple 3D scene done in a few minuted in Toolbag3, just to show how much visual impact on final result simple PBR material with HDR lighting can have.

The 3D scene preview - this is the one I used to render material but without any material applied yet.

The 3D scene preview - this is the one I used to render material but without any material applied yet.

This is my photogrammetry workflow I followed (https://www.artstation.com/artwork/K0PYG)

This is my photogrammetry workflow I followed (https://www.artstation.com/artwork/K0PYG)

Capture scene with the tree I captured. I recorded entire capture but I decided to not create another video tutorial since it would be almost the same as the last one I released.

Capture scene with the tree I captured. I recorded entire capture but I decided to not create another video tutorial since it would be almost the same as the last one I released.

Me capturing the tree

Me capturing the tree

Color Calibration - Auto White Balance (camera's guess) vs Custom White Balance (reality)

Color Calibration - Auto White Balance (camera's guess) vs Custom White Balance (reality)

Photoscan - reconstruction preview. I used 166 captured images to reconstruct 7mln poly dense mesh.

Photoscan - reconstruction preview. I used 166 captured images to reconstruct 7mln poly dense mesh.

Another Photoscan shot to show captured image distribution in a better angle

Another Photoscan shot to show captured image distribution in a better angle

To build lowpoly model for baking I used 3DS Max and simple Cylinder. I set it's proportions as 1:5 to avoid any uv stretching. As it fills entire 1:1 UV space it autotiles horizontally :)

To build lowpoly model for baking I used 3DS Max and simple Cylinder. I set it's proportions as 1:5 to avoid any uv stretching. As it fills entire 1:1 UV space it autotiles horizontally :)

Seam removal in Painter with Clone tool - before and after.

Seam removal in Painter with Clone tool - before and after.

Substance graph I used to generate final PBR results. As height was super hard to tile I used it just as a reference to generate a good one from bent normal.

Substance graph I used to generate final PBR results. As height was super hard to tile I used it just as a reference to generate a good one from bent normal.

1k tex live preview

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