Grass - Photogrammetry based Environment Texture
As weather is getting better and better every day, I decided to scan something. Picked grass again. It was a good choice as lighting was pretty poor, result sucks and entire capture seemed to be a total fail .. at least until I used Lightroom and fixed images using 14 bits color information coming from RAW files. I used that capture as a good example of RAW usability and updated RAW vs JPEG section in my photogrammetry tutorial. I also modified my main workflow by introducing Lightroom but need to fail few more times before I officially update my tutorial.
As I was planning to use that capture as material for my new video tutorial and recorded entire capture part, have also captured a moment with dog trying to borrow one of my markers :)
PBR tex preview
My photogrammetry worflow. With current material I introduced quite big change in my workflow. I have added Lightroom as a new tool. Same as Photoshop it is still just optional one and is used just for tweaking and fixes on captured images.
Source location
Source details
Proof that dogs love my markers :)
Color Calibration - Auto White Balance (camera's guess) vs Custom White Balance (reality).
Because captured images were too dark I had to tweak them in Lightrooom. This is page from my photogrammetry guide explaining difference between having RGB color information stored in 8 bits, 12 or 14.
another page as previous one makes no sense at all alone :)
Photoscan preview - I used 336 images to reconstruct 40mln highpoly geometry. Focal length was set to 35mm to capture more surface details.
ZBrush - lowpoly over highpoly
Improved substance graph - updated and added with comments to the tutorial