{
 "reviewedOn": "2026-09-12",
 "reviewer": "PicoBerry product team — AI-assisted visual inspection (Claude, multimodal) of the published render sheets; no human scoring was added",
 "evidence": "renders/sheets/<engine>__<input>.jpg on the CDN (Blender 5.1.2 EEVEE, the file's own PBR materials, orthographic cameras at world −Y/+Y/−X/+X, input image at top-left; 3 runs per sheet)",
 "criteria": {
  "silhouette": "Does the object's overall shape and its named parts match the input image in the views where they are visible? yes / partial / no",
  "colorAndMaterial": "Does the base colour / material read match the input (tone, grain, accent colours)? close / deviates / off — texture sharpness is noted but not graded",
  "visibleDefects": "Holes, floating parts, mirrored or missing parts, texture smearing visible at 512 px in any of the 4 views",
  "forwardAxis": "Which world axis the model faces in the raw GLB (engines differ; PicoBerry's pipeline normalizes facing separately)",
  "note": "These are inspection notes at 512 px per view, not a ranking. Engines are not ordered by these notes anywhere on the page."
 },
 "rows": [
  {
   "engine": "tripo",
   "input": "stylized-prop",
   "silhouette": "yes",
   "colorAndMaterial": "deviates",
   "visibleDefects": "none seen",
   "forwardAxis": "n/a (radially symmetric)",
   "notes": "Two dark bands with rivets and stave lines are present. Wood reads as a uniform lighter orange-brown; the input's darker grain is mostly absent. Three runs look alike."
  },
  {
   "engine": "tripo-p2",
   "input": "stylized-prop",
   "silhouette": "yes",
   "colorAndMaterial": "deviates",
   "visibleDefects": "none seen",
   "forwardAxis": "n/a",
   "notes": "As tripo; stave seams slightly more visible."
  },
  {
   "engine": "tripo-v3.1",
   "input": "stylized-prop",
   "silhouette": "yes",
   "colorAndMaterial": "deviates",
   "visibleDefects": "none seen",
   "forwardAxis": "n/a",
   "notes": "Grain visible; overall tone lighter than the input."
  },
  {
   "engine": "tripo-v3.1-ultra",
   "input": "stylized-prop",
   "silhouette": "yes",
   "colorAndMaterial": "deviates",
   "visibleDefects": "none seen",
   "forwardAxis": "n/a",
   "notes": "Comparable to tripo-v3.1."
  },
  {
   "engine": "meshy6",
   "input": "stylized-prop",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "n/a",
   "notes": "Darker warm wood with visible grain is the closest to the input among the six; bands thinner than in the input."
  },
  {
   "engine": "hunyuan-3.1",
   "input": "stylized-prop",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "n/a",
   "notes": "Grain visible, tone between Tripo and Meshy; band edges crisp."
  },
  {
   "engine": "tripo",
   "input": "hard-surface",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "±X (muzzle along X)",
   "notes": "Slide, grip, trigger guard, muzzle cap and orange accents present; panel lines and vents are smoothed out (low-poly)."
  },
  {
   "engine": "tripo-p2",
   "input": "hard-surface",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "±X",
   "notes": "As tripo with slightly crisper edges."
  },
  {
   "engine": "tripo-v3.1",
   "input": "hard-surface",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "±X",
   "notes": "Panel lines, vents, rear sight and muzzle bore are crisp."
  },
  {
   "engine": "tripo-v3.1-ultra",
   "input": "hard-surface",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "±X",
   "notes": "Comparable to tripo-v3.1."
  },
  {
   "engine": "meshy6",
   "input": "hard-surface",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "±Y (muzzle along Y)",
   "notes": "Crisp panel detail; dark charcoal body closest to the input tone."
  },
  {
   "engine": "hunyuan-3.1",
   "input": "hard-surface",
   "silhouette": "yes",
   "colorAndMaterial": "deviates",
   "visibleDefects": "none seen",
   "forwardAxis": "±Y",
   "notes": "Body renders a lighter grey than the input's charcoal; orange accents and panel lines preserved."
  },
  {
   "engine": "tripo",
   "input": "character",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "−X (faces the −X camera)",
   "notes": "T-pose, helmet, pauldrons, tabard present; tabard emblem indistinct; faceting visible at 4.7K faces."
  },
  {
   "engine": "tripo-p2",
   "input": "character",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "−X",
   "notes": "As tripo; emblem faint."
  },
  {
   "engine": "tripo-v3.1",
   "input": "character",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "−X",
   "notes": "Plate detail finer than Slim; emblem visible but soft."
  },
  {
   "engine": "tripo-v3.1-ultra",
   "input": "character",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "−X",
   "notes": "Comparable to tripo-v3.1; details crisp."
  },
  {
   "engine": "meshy6",
   "input": "character",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "−Y",
   "notes": "Bright steel with gold trim; lion emblem legible on the tabard."
  },
  {
   "engine": "hunyuan-3.1",
   "input": "character",
   "silhouette": "yes",
   "colorAndMaterial": "close",
   "visibleDefects": "none seen",
   "forwardAxis": "−Y",
   "notes": "Emblem legible; surface detail slightly softer than Meshy 6 at this size."
  }
 ],
 "summary": {
  "silhouette": "18/18 engine×input combinations match the input's shape in the visible views (yes). No holes, floaters or missing parts were seen in the 4 views at 512 px — the welded-topology numbers in mesh-quality.json are the objective check for holes.",
  "colorAndMaterial": "close 13 / deviates 5 (barrel wood tone on the four Tripo engines; Hunyuan pistol body lighter than the input).",
  "forwardAxis": "Tripo engines face ±X, Meshy 6 and Hunyuan 3.1 face −Y in the raw GLB — normalize orientation on import (PicoBerry's pipeline does this for its previews).",
  "limits": "512 px orthographic views under one lighting setup; fine texture defects, UV seams and back-face issues would need a closer inspection. No engine is ranked from these notes."
 }
}