  We introduce MatSynth, a dataset of 4,000+ CC0 ultra-high resolution PBR
materials. Materials are crucial components of virtual relightable assets,
defining the interaction of light at the surface of geometries. Given their
importance, significant research effort was dedicated to their representation,
creation and acquisition. However, in the past 6 years, most research in
material acquisiton or generation relied either on the same unique dataset, or
on company-owned huge library of procedural materials. With this dataset we
propose a significantly larger, more diverse, and higher resolution set of
materials than previously publicly available. We carefully discuss the data
collection process and demonstrate the benefits of this dataset on material
acquisition and generation applications. The complete data further contains
metadata with each material's origin, license, category, tags, creation method
and, when available, descriptions and physical size, as well as 3M+ renderings
of the augmented materials, in 1K, under various environment lightings. The
MatSynth dataset is released through the project page at:
https://www.gvecchio.com/matsynth.
