15 Polarimetric Paving Stones - Ground-Truth PBR (16K / 10M+ Tris per asset)

A collection of 15 ultra-realistic, physically calibrated paving stone assets engineered specifically for high-end Architectural Offline Rendering (V-Ray, Corona, Arnold, Cycles, Octane), VFX environments, and Nanite / Unreal Engine 5 productions.

Unlike standard photogrammetry assets that suffer from baked reflections, surface flare, and synthetic normal estimation, each stone in this pack was captured using an advanced multi-angle polarimetric pipeline. The result is 100% ground-truth PBR data that responds identically to real-world physics under any lighting condition, from harsh direct midday sun to wet, high-contrast night shots.

ADVANCED POLARIMETRIC PIPELINE

• Multi-Angle Polarimetric Scanning: Captured across 432 individual exposures per stone, measuring 4 distinct polarization angles (0 deg, 45 deg, 90 deg, and 135 deg) across all camera stations.

• True Delit Albedo (Cross-Polarized Diffuse): Computed from 108 cross-polarized images, completely removing all specular highlights, surface glare, and micro-shadowing for authentic surface albedo.

• Stokes Vector Roughness: Roughness is mathematically derived directly from physical Stokes parameters, isolating real microfacet light scattering rather than relying on artistic albedo inversion.

• DoLP-Derived Specular: Specular intensity calculated from the Degree of Linear Polarization (DoLP), accurately mapping physical Fresnel variations across natural mineral deposits and stone strata.

• Shape from Polarization (SfP) Normals: Sub-millimeter geometric fidelity calculated through optical polarization analysis, resolving micro-surface relief far beyond the theoretical limits of traditional multi-view photogrammetry.

KEY ADVANTAGES FOR VFX AND ARCHVIZ

• Extreme Close-Up Ready: Built with up to 14 millon triangles per stone and 16K master textures, allowing macro camera passes and ground-level hero shots without tessellation breakdown.

• Seamless Lighting Integration: Zero specular contamination guarantee accurate IOR and Fresnel falloff in production offline pathtracers.

• Memory-Optimized Packing: Production-ready packed SRM maps designed for clean shading networks and reduced GPU/VRAM footprint in massive scatter ecosystems.

ASSET SPECIFICATIONS

• Assets: 15 Unique Paving Stone Meshes

• Geometry: Static Meshes ranging between 10.000.000 and 14.000.000 triangles per asset

• Scale: Real-world physical scale (Metric)

• Resolution: 16384 x 16384 (16K Master Textures)

TEXTURE MAP DETAILS (SRM WORKFLOW)

• Diffuse / BaseColor: Cross-polarized, completely delit (sRGB)

• Normal: Derived from Shape from Polarization (Linear / Tangent space)

• SRM Map (Channel Packed):

  • Red: DoLP Specular (Linear)

  • Green: Stokes-derived Roughness (Linear)

  • Blue: Metallic (Linear / Constant 0 for non-conductive dielectric stone)