{
  "schema": "gauge-detector-center-v1",
  "model_file": "gauge-detector.onnx",
  "model_sha256": "99bdd483402444e8c799452d9885c1184980a41f2cd80d4af4d7a6b3ae00abc6",
  "model_bytes": 966419,
  "contract_file": "contract.json",
  "contract_sha256": "87a4cec9e0466250b635e561c74be81f2ce5f15fbd79804a1be639c3719a69d3",
  "checkpoint_sha256": "42fca6a5cad028bd21c7a05195c93c02597f8ffe2c5280875a5f1254029c0f83",
  "selected_epoch": 7,
  "frozen_config_sha256": "a58dcdd47804b38eb2dfeccce12f43f570628bf82117ccdf62975b16a0244280",
  "parameters": 237142,
  "onnx_opset": 17,
  "operators": [
    "Add",
    "Cast",
    "Concat",
    "Constant",
    "Conv",
    "Div",
    "Gather",
    "GlobalAveragePool",
    "HardSigmoid",
    "HardSwish",
    "Mul",
    "Relu",
    "Resize",
    "Shape",
    "Slice",
    "Sub",
    "Unsqueeze"
  ],
  "onnx_version": "1.19.1",
  "ort_version": "1.24.2",
  "status": "experimental_candidate_not_independently_accepted",
  "input": {
    "name": "image",
    "dtype": "float32",
    "layout": "NCHW",
    "shape": [
      1,
      3,
      384,
      640
    ],
    "channels": "RGB",
    "range": [
      0,
      1
    ],
    "spatial_multiple": 32,
    "dynamic_spatial": true,
    "resize": "stretch_full_source_half_pixel_bilinear_no_antialias",
    "pixel_formula": "sx=(dx+0.5)*source_width/dest_width-0.5; sy analogous; floor coordinates, clamp each neighbor index; interpolate raw uint8 RGB in float32 then divide by 255; no intermediate uint8 rounding",
    "normalization": "divide_255_only; ImageNet normalization is inside the graph"
  },
  "outputs": [
    {
      "name": "center_logits",
      "channels": 1
    },
    {
      "name": "size_logits",
      "channels": 2,
      "order": [
        "width",
        "height"
      ]
    },
    {
      "name": "offset_logits",
      "channels": 2,
      "order": [
        "x",
        "y"
      ]
    },
    {
      "name": "representation_logits",
      "channels": 4,
      "labels": [
        "digits",
        "bar",
        "wheel",
        "needle"
      ]
    },
    {
      "name": "semantic_logits",
      "channels": 5,
      "labels": [
        "unknown",
        "gear",
        "stint_lap",
        "brake",
        "throttle"
      ]
    }
  ],
  "decode": {
    "score_threshold": 0.35,
    "local_max_kernel": 3,
    "local_max_rule": "sigmoid(center) >= every in-bounds 3x3 neighbor; equal maxima all retained before top-k",
    "candidate_limit": 100,
    "sort": "descending score then ascending flat y*grid_width+x index",
    "center": "((x+sigmoid(offset_x))/grid_width,(y+sigmoid(offset_y))/grid_height)",
    "size": "(sigmoid(width_logit),sigmoid(height_logit)) normalized full-source width/height",
    "box": "center +/- size/2; clip each coordinate to [0,1]; discard zero-area",
    "nms": "class-agnostic greedy suppress IoU strictly > 0.4",
    "nms_iou": 0.4,
    "max_detections": 32,
    "representation": "argmax; lowest index wins ties",
    "semantic": "softmax argmax; lowest index wins ties; emit unknown if max probability < 0.8",
    "semantic_threshold": 0.8
  },
  "limitations": [
    "scores are not calibrated probabilities",
    "unknown semantic has positive supervision only for explicitly observed non-Tier1 fields in four TRAIN images; ambiguous fields and generic lap-counter ownership remain masked; no open-set certification",
    "all synthetic semantic loss fully masked; no renderer-intent labels",
    "real weak windows use positive MIL only, no extent or offset loss or background negatives; four pixel-reviewed TRAIN images provide stronger geometry with explicit ignored regions",
    "bar includes segmented indicators, no fill direction or scale predicted",
    "visibility/readability/support remain unknown",
    "detector boxes never imply arbitrary crop reader support",
    "confirmed user/reviewed configuration required before extraction",
    "only two known real layouts and four reviewed TRAIN background assets; repeated views are not new source diversity"
  ],
  "licensing": "torchvision BSD-3-Clause backbone; task weights redistribution license unspecified; no public upload",
  "required_metadata_keys": [
    "schema",
    "model_file",
    "model_sha256",
    "contract_file",
    "contract_sha256",
    "status",
    "input",
    "outputs",
    "decode",
    "limitations"
  ]
}