{
  "title": "Ribbed Pistachio Ceramic",
  "origin": "AI-generated with built-in image_gen; prepared by Locker3d",
  "date": "2026-10-31",
  "resolution": [
    1024,
    1024
  ],
  "license": "CC0-1.0, following the official Locker3d texture policy",
  "prompt": "Use case: photorealistic-natural. Asset type: square diffuse/albedo map for an architectural 3D material. Subject: pale pistachio green glazed ribbed ceramic, a continuous close-up section of fine parallel straight vertical flutes, roughly twenty-four narrow ribs across an illustrative 30 cm square. Intrinsic ceramic color: restrained light yellow-green celadon glaze, tiny sparse fired mineral speckles and subtle vertical glaze pooling in slightly greener narrow groove lines. Faces between the narrow lines are clean, smooth and gently rounded, very subtle natural handmade variation, no thick bumps, no distress or cracks. Full bleed perpendicular orthographic material photography, consistent spacing and equal scale throughout, opposite edges designed to repeat. The rib pattern runs uninterrupted from top to bottom; no horizontal tile joints, no grout, no separate loose tiles, no objects. Uniform cross-polarized neutral diffuse illumination intended for base color only, no dark cavity shadows, directional lighting, baked specular glints, reflections, AO, bevel shadows, dramatic gradients or vignette. The groove color comes from glaze pooling, not directional light; keep tonal contrast modest. Real calibrated photographic ceramic surface, not corduroy, plastic, corrugated metal or an illustration. No sphere, room scene, perspective, borders, labels, logos, text or watermark. Output square at least 1024 pixels.",
  "maps": [
    {
      "file": "textures/albedo.png",
      "colorSpace": "sRGB",
      "bytes": 1296167,
      "sha256": "1b9e54d0d69a8ab97f63f0c37849d16b77e0cf839c3d3a99f1b525c1103f8a5e"
    },
    {
      "file": "textures/normal-gl.png",
      "colorSpace": "Non-Color",
      "bytes": 1234863,
      "sha256": "267201cd710b72117dd5b6c3d10aae87797120d32b4db95816907a55aa11fb6a"
    },
    {
      "file": "textures/roughness.png",
      "colorSpace": "Non-Color",
      "bytes": 65702,
      "sha256": "c3c505315cd5032304362a2e653d93f5398b240c7dabb3c3586e11d0d3d003ed"
    }
  ],
  "method": "Albedo: periodic-plus-smooth decomposition via FFT Poisson solve to reduce edge mismatch. Normal: periodic multi-scale Gaussian bands, robust contrast normalization, material-specific cavity/joint masks and central-difference tangent-space gradients. Roughness: material preset plus local detail and joint variation. All data channels are estimates, not measured surface response.",
  "limits": "Not a photoscan. No AO, displacement or metallic maps. Generated images are not guaranteed seamless; inspect repetition at your target scale. No measured physical scale; demo scale is illustrative.",
  "edgeDiagnostics": {
    "leftRightMeanAbsRGB": 0.628,
    "topBottomMeanAbsRGB": 1.785
  },
  "suggestedTileMeters": 0.3,
  "metallicConstant": 0,
  "normalStrength": 0.65,
  "beforeEdgeDiagnostics": {
    "leftRightMeanAbsRGB": 13.043,
    "topBottomMeanAbsRGB": 9.296
  }
}