{
  "schema": "underbody-registration-landmarks-v1",
  "classification": "Interpreted feature proxies and conditional display frame;not accepted fitted registration.",
  "owner_dimensions_applied": false,
  "cad_pose_changed": false,
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    "underbody-aperture-face-evidence.json": "1453d21bcfa1f19defbb2ea316f3085870fcec07ee2787c45733cb22a8e4d75a"
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  "held_out_projections": {
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      "roi_source_pixels": [
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      "roi_source_pixels": [
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      "component_pixels": 587,
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    "image_right_aperture_proxy": {
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      "threshold_gray": 15,
      "component_pixels": 728,
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      "predicted_source_pixels": [
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      "residual_source_pixels": 2.3219818272123676
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    "hub_img_6916.jpg": {
      "image": "img_6916.jpg",
      "method": "Rounded manual center proxy in magnified source view;not a mechanical-axis pick.",
      "observed_source_pixels": [
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        384
      ],
      "predicted_source_pixels": [
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      "residual_source_pixels": 4.282388511573998
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    "hub_img_6917.jpg": {
      "image": "img_6917.jpg",
      "method": "Rounded manual center proxy in magnified source view;not a mechanical-axis pick.",
      "observed_source_pixels": [
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        153
      ],
      "predicted_source_pixels": [
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      "residual_source_pixels": 1.5920252971268443
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  "held_out_scope": "Additional source-image checks,not independent photographs or blinded feature selection. None entered point triangulation.",
  "observed_outer_proxy_span_arbitrary": 6.431786522214847,
  "body_mm_to_photo": {
    "rotation": [
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    "translation_arbitrary": [
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    "arbitrary_units_per_mm": 0.01726499603314651,
    "physical_scale_applied": false,
    "interpretation": "Display only:current native aperture row maps onto interpreted outer proxies;native+Ymaps to an aperture-patch normal oriented toward the hub proxy. These are not recovered physical body axes."
  },
  "comparison": {
    "native_row_center_body_mm": [
      0.0,
      198.96666666666667,
      999.0666666666668
    ],
    "native_row_span_mm": 372.53333333333336,
    "native_hub_comparison_point_body_mm": [
      0.0,
      330.20000000000005,
      961.4000000000001
    ],
    "native_hub_point_basis": "Current modeled nut/collar frontmost axial plane and bounding center;not identified as the photographed opening plane.",
    "native_hub_to_outer_row_midpoint_over_outer_span": 0.3664958519490461,
    "photo_hub_proxy_to_outer_proxy_midpoint_over_outer_span": 0.71965041553861,
    "native_components_divided_by_row_span": [
      0.0,
      0.35227272727272735,
      -0.10110952040085917
    ],
    "photo_components_in_conditional_row_frame": [
      0.008548895823704671,
      0.6834299309320466,
      0.2252713174625378
    ],
    "middle_proxy_in_conditional_row_frame": [
      0.02774916297214928,
      0.03288883911142892,
      -0.028022253418955534
    ],
    "scope": "Euclidean ratio is invariant to display rotation/scale but still compares interpreted feature proxies to an estimated native axial reference. It cannot select a unique engine translation or frame correction."
  },
  "limits": "Interpreted image-region proxies,not measured hole axes or a physical crankshaft datum. Two source views determine the points;additional images check their projections without entering the fit. The hub opening is partly occluded and its mechanical identity/axial plane is unverified. Camera hypotheses and manual picks remain uncertain. The outer-aperture span and aperture texture-patch normal define a conditional display similarity. This maps the current native lower-row span to the observed proxy span;it does not establish a physical millimetre scale,bodyY,gravity or an actual engine/body pose. All native geometry/placements stay unchanged. Ratios and overlay discrepancies do not determine which individual frame,engine,pulley or hole dimension is wrong or supply a unique correction. The jack-supported photographs do not define road-loaded suspension or ground clearance. No repair,loaded clearance,tool access or verified replacement path follows.",
  "independent_camera_check": {
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        "camera_center": [
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    "landmarks": {
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      "middle_aperture_proxy": [
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    "hub_distance_over_outer_span": 0.7169066958038962,
    "model_files_sha256": {
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      "cameras.bin": "d95b7f99739976bfb738674f9d2eb04c892000816fd3b336f302848de14a5665",
      "images.bin": "c62e4111a45785e4dc4c45c8b97223dba41e47c835cf1f27585c49d7f03db6a4",
      "frames.bin": "2e78ce4f74b590974c2e5712576f2de52887bc021532c86de1305ace071a44c4",
      "points3D.bin": "7ec4547e6eeeaa1211bdbf58498f5d28546e4d0a1a155bae20e0725e2b6cecb2"
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    "scope": "Same photos and same interpreted picks,different feature/camera pipeline;not independent survey or physical scale."
  }
}