{
  "title": "Larch End-Grain Blocks",
  "origin": "AI-generated with built-in image_gen; prepared by Locker3d",
  "date": "2026-10-27",
  "resolution": [
    1024,
    1024
  ],
  "license": "CC0-1.0, following the official Locker3d texture policy",
  "prompt": "Use case: photorealistic-natural. Asset type: square albedo/base-color map for a downloadable 3D wood material. Subject: closely fitted square larch end-grain wood blocks forming a six-by-six block mosaic, about 60 cm across the full image as an illustrative scale. Each block is a cross-section through conifer timber: narrow earlywood and latewood annual rings, varied partial arcs and off-center curved ring segments, delicate radial rays and tiny natural pores. Distinct grain direction and ring curvature on adjacent blocks, realistic restrained natural variation in honey straw, light amber, warm beige and muted reddish tan. Matte lightly oiled surface with no gloss highlights. Very narrow fine dark wood-to-wood seams, flush block faces; no wide grout, no deep black gaps, no beveled edges. Avoid one centered bullseye in every block. Include a few fine short end checks, no large split logs. Straight perpendicular orthographic material photography, absolutely flat continuous full-bleed surface with no perspective, designed for a repeat through opposite edges. Neutral uniform diffuse cross-polarized lighting and intrinsic color only: no directional shadows, reflections, baked AO, vignette, borders, labels, text, watermark, room, object or sphere. Photographic fine-scale wood detail rather than painted concentric rings. Square output at least 1024 pixels.",
  "maps": [
    {
      "file": "textures/albedo.png",
      "colorSpace": "sRGB",
      "bytes": 2217889,
      "sha256": "8dc1371373feee1c35ad05c1794394dd5cc55f4b0183b3a2e95596c616c66e79"
    },
    {
      "file": "textures/normal-gl.png",
      "colorSpace": "Non-Color",
      "bytes": 1489702,
      "sha256": "ae38dbddc31e0486c98048917d5cfd0c96ac96b0ed93b3cae1acbc8425ed3859"
    },
    {
      "file": "textures/roughness.png",
      "colorSpace": "Non-Color",
      "bytes": 395383,
      "sha256": "45b0eade7a1d8c03fd063107aa199a1171ef79d6f436c9d9a9359d3f9d55144b"
    }
  ],
  "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": 2.648,
    "topBottomMeanAbsRGB": 2.216
  },
  "suggestedTileMeters": 0.6,
  "metallicConstant": 0,
  "normalStrength": 0.5,
  "beforeEdgeDiagnostics": {
    "leftRightMeanAbsRGB": 31.245,
    "topBottomMeanAbsRGB": 12.069
  }
}