Event Debug

ALPR Debug

Event #373441
Stream road
Status processed_no_match
Strategy frigate_plate_first
Detect —
OCR —

Selected Media

This is the event media currently shown elsewhere in the UI.

Selected event media

ALPR Attempts

Each recorded input and the corresponding service outcome for this event.

event_snapshot_vehicle_bbox

Snapshot

Input ALPR input
Full Frame Full frame
Count 0 Unfiltered 1 No candidate

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 0,
  "detections": [],
  "filter": {
    "accept_short_dateless": false,
    "country": "United Kingdom",
    "method": "model_country_match_plus_uk_format_validation",
    "min_valid_plate_len": 5,
    "strict_uk_plate_validation": true
  },
  "model": {
    "detector": "yolo-v9-t-384-license-plate-end2end",
    "detector_conf_thresh": 0.4,
    "ocr": "cct-s-v2-global-model"
  },
  "processing_ms": 11.07,
  "rejected_count": 1,
  "rejected_detections": [
    {
      "bbox": [
        567.0,
        443.0,
        626.0,
        471.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.88254714012146,
      "filename": "event_snapshot_vehicle_bbox_track.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.9986961483955384,
        0.984838843345642,
        0.9887803792953492,
        0.7180763483047485,
        0.7381188273429871,
        0.14782293140888214,
        0.7071553468704224,
        0.9928271174430848,
        0.9989651441574096,
        0.9995428323745728
      ],
      "ocr_confidence": 0.8274823918938636,
      "ocr_min_char_confidence": 0.14782293140888214,
      "plate": "E11MZ0X",
      "plate_validation": {
        "format": null,
        "input": "E11MZ0X",
        "normalised": "E11MZ0X",
        "reasons": [
          "no_uk_format_match"
        ],
        "valid": false
      },
      "polygon": null,
      "quality": {
        "area_score": 0.2624,
        "bbox": {
          "area_ratio": 0.00328,
          "height_px": 28,
          "min_margin_px": 161,
          "required_margin_px": 8,
          "width_px": 59
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 0.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.6896,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 567,
            "x2": 626,
            "y1": 443,
            "y2": 471
          },
          "confidence": 0.88254714012146,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.9986961483955384,
            0.984838843345642,
            0.9887803792953492,
            0.7180763483047485,
            0.7381188273429871,
            0.14782293140888214,
            0.7071553468704224,
            0.9928271174430848,
            0.9989651441574096,
            0.9995428323745728
          ],
          "region": "United Kingdom",
          "region_confidence": 0.999947190284729,
          "text": "E11MZ0X"
        }
      },
      "rejected": true,
      "rejection_reasons": [
        "no_uk_format_match"
      ]
    }
  ],
  "unfiltered_count": 1
}

event_snapshot_full_frame

Snapshot

Input ALPR input
Full Frame Full frame
Count 0 Unfiltered 0 No candidate

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 0,
  "detections": [],
  "filter": {
    "accept_short_dateless": false,
    "country": "United Kingdom",
    "method": "model_country_match_plus_uk_format_validation",
    "min_valid_plate_len": 5,
    "strict_uk_plate_validation": true
  },
  "model": {
    "detector": "yolo-v9-t-384-license-plate-end2end",
    "detector_conf_thresh": 0.4,
    "ocr": "cct-s-v2-global-model"
  },
  "processing_ms": 7.76,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}

event_snapshot_plate_bbox

Snapshot

Input ALPR input
Full Frame Full frame
Count 0 Unfiltered 1 No candidate

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 0,
  "detections": [],
  "filter": {
    "accept_short_dateless": false,
    "country": "United Kingdom",
    "method": "model_country_match_plus_uk_format_validation",
    "min_valid_plate_len": 5,
    "strict_uk_plate_validation": true
  },
  "model": {
    "detector": "yolo-v9-t-384-license-plate-end2end",
    "detector_conf_thresh": 0.4,
    "ocr": "cct-s-v2-global-model"
  },
  "processing_ms": 14.32,
  "rejected_count": 1,
  "rejected_detections": [
    {
      "bbox": [
        34.0,
        13.0,
        97.0,
        39.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.9210259914398192,
      "filename": "event_snapshot_plate_bbox_plate.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.9944732785224916,
        0.8294969201087952,
        0.979134440422058,
        0.4179967641830444,
        0.5030446648597717,
        0.1497039943933487,
        0.4250238835811615,
        0.9720286130905152,
        0.9950945377349854,
        0.9975940585136414
      ],
      "ocr_confidence": 0.7263591155409813,
      "ocr_min_char_confidence": 0.1497039943933487,
      "plate": "E11MZGX",
      "plate_validation": {
        "format": null,
        "input": "E11MZGX",
        "normalised": "E11MZGX",
        "reasons": [
          "no_uk_format_match"
        ],
        "valid": false
      },
      "polygon": null,
      "quality": {
        "area_score": 1.0,
        "bbox": {
          "area_ratio": 0.238636,
          "height_px": 26,
          "min_margin_px": 13,
          "required_margin_px": 8,
          "width_px": 63
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 0.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.8005,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 34,
            "x2": 97,
            "y1": 13,
            "y2": 39
          },
          "confidence": 0.9210259914398192,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.9944732785224916,
            0.8294969201087952,
            0.979134440422058,
            0.4179967641830444,
            0.5030446648597717,
            0.1497039943933487,
            0.4250238835811615,
            0.9720286130905152,
            0.9950945377349854,
            0.9975940585136414
          ],
          "region": "United Kingdom",
          "region_confidence": 0.9991949200630188,
          "text": "E11MZGX"
        }
      },
      "rejected": true,
      "rejection_reasons": [
        "no_uk_format_match"
      ]
    }
  ],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 1 · -0.50s

Input ALPR input
Full Frame Full frame
Count 0 Unfiltered 0 No candidate

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 0,
  "detections": [],
  "filter": {
    "accept_short_dateless": false,
    "country": "United Kingdom",
    "method": "model_country_match_plus_uk_format_validation",
    "min_valid_plate_len": 5,
    "strict_uk_plate_validation": true
  },
  "model": {
    "detector": "yolo-v9-t-384-license-plate-end2end",
    "detector_conf_thresh": 0.4,
    "ocr": "cct-s-v2-global-model"
  },
  "processing_ms": 6.17,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}

recording_snapshot_frame

Frame 2 · -0.21s

Input ALPR input
Full Frame Full frame
Count 0 Unfiltered 1 No candidate

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 0,
  "detections": [],
  "filter": {
    "accept_short_dateless": false,
    "country": "United Kingdom",
    "method": "model_country_match_plus_uk_format_validation",
    "min_valid_plate_len": 5,
    "strict_uk_plate_validation": true
  },
  "model": {
    "detector": "yolo-v9-t-384-license-plate-end2end",
    "detector_conf_thresh": 0.4,
    "ocr": "cct-s-v2-global-model"
  },
  "processing_ms": 10.49,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 3 · 0.07s

Input ALPR input
Full Frame Full frame
Count 0 Unfiltered 1 No candidate

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 0,
  "detections": [],
  "filter": {
    "accept_short_dateless": false,
    "country": "United Kingdom",
    "method": "model_country_match_plus_uk_format_validation",
    "min_valid_plate_len": 5,
    "strict_uk_plate_validation": true
  },
  "model": {
    "detector": "yolo-v9-t-384-license-plate-end2end",
    "detector_conf_thresh": 0.4,
    "ocr": "cct-s-v2-global-model"
  },
  "processing_ms": 8.27,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 4 · 0.36s

Input ALPR input
Full Frame Full frame
Count 0 Unfiltered 1 No candidate

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 0,
  "detections": [],
  "filter": {
    "accept_short_dateless": false,
    "country": "United Kingdom",
    "method": "model_country_match_plus_uk_format_validation",
    "min_valid_plate_len": 5,
    "strict_uk_plate_validation": true
  },
  "model": {
    "detector": "yolo-v9-t-384-license-plate-end2end",
    "detector_conf_thresh": 0.4,
    "ocr": "cct-s-v2-global-model"
  },
  "processing_ms": 9.98,
  "rejected_count": 1,
  "rejected_detections": [
    {
      "bbox": [
        106.0,
        120.0,
        152.0,
        138.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.8090431094169617,
      "filename": "frame_000004_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.9988264441490172,
        0.9969123601913452,
        0.9366318583488464,
        0.5800846815109253,
        0.3271990716457367,
        0.8676738142967224,
        0.6851692199707031,
        0.99969744682312,
        0.9998385906219482,
        0.9998540878295898
      ],
      "ocr_confidence": 0.8391887575387955,
      "ocr_min_char_confidence": 0.3271990716457367,
      "plate": "E111UX",
      "plate_validation": {
        "format": null,
        "input": "E111UX",
        "normalised": "E111UX",
        "reasons": [
          "no_uk_format_match"
        ],
        "valid": false
      },
      "polygon": null,
      "quality": {
        "area_score": 0.1315,
        "bbox": {
          "area_ratio": 0.001644,
          "height_px": 18,
          "min_margin_px": 106,
          "required_margin_px": 8,
          "width_px": 46
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 0.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.6534,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 106,
            "x2": 152,
            "y1": 120,
            "y2": 138
          },
          "confidence": 0.8090431094169617,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.9988264441490172,
            0.9969123601913452,
            0.9366318583488464,
            0.5800846815109253,
            0.3271990716457367,
            0.8676738142967224,
            0.6851692199707031,
            0.99969744682312,
            0.9998385906219482,
            0.9998540878295898
          ],
          "region": "United Kingdom",
          "region_confidence": 0.999668836593628,
          "text": "E111UX"
        }
      },
      "rejected": true,
      "rejection_reasons": [
        "no_uk_format_match",
        "plate_box_too_narrow"
      ]
    }
  ],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 5 · 0.64s

Input ALPR input
Full Frame Full frame
Count 0 Unfiltered 1 No candidate

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 0,
  "detections": [],
  "filter": {
    "accept_short_dateless": false,
    "country": "United Kingdom",
    "method": "model_country_match_plus_uk_format_validation",
    "min_valid_plate_len": 5,
    "strict_uk_plate_validation": true
  },
  "model": {
    "detector": "yolo-v9-t-384-license-plate-end2end",
    "detector_conf_thresh": 0.4,
    "ocr": "cct-s-v2-global-model"
  },
  "processing_ms": 14.72,
  "rejected_count": 1,
  "rejected_detections": [
    {
      "bbox": [
        171.0,
        166.0,
        220.0,
        184.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.8294060826301575,
      "filename": "frame_000005_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.9993684887886048,
        0.999912977218628,
        0.9995974898338318,
        0.4182052314281464,
        0.497107595205307,
        0.9015516638755798,
        0.4351582825183869,
        0.999213933944702,
        0.9997637867927552,
        0.999829888343811
      ],
      "ocr_confidence": 0.8249709337949753,
      "ocr_min_char_confidence": 0.4182052314281464,
      "plate": "E11MOXK",
      "plate_validation": {
        "format": null,
        "input": "E11MOXK",
        "normalised": "E11MOXK",
        "reasons": [
          "no_uk_format_match"
        ],
        "valid": false
      },
      "polygon": null,
      "quality": {
        "area_score": 0.1401,
        "bbox": {
          "area_ratio": 0.001751,
          "height_px": 18,
          "min_margin_px": 166,
          "required_margin_px": 8,
          "width_px": 49
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 0.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.6552,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 171,
            "x2": 220,
            "y1": 166,
            "y2": 184
          },
          "confidence": 0.8294060826301575,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.9993684887886048,
            0.999912977218628,
            0.9995974898338318,
            0.4182052314281464,
            0.497107595205307,
            0.9015516638755798,
            0.4351582825183869,
            0.999213933944702,
            0.9997637867927552,
            0.999829888343811
          ],
          "region": "United Kingdom",
          "region_confidence": 0.9999998807907104,
          "text": "E11MOXK"
        }
      },
      "rejected": true,
      "rejection_reasons": [
        "no_uk_format_match",
        "plate_box_too_narrow"
      ]
    }
  ],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 6 · 0.93s

Input ALPR input
Full Frame Full frame
Count 0 Unfiltered 1 No candidate

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 0,
  "detections": [],
  "filter": {
    "accept_short_dateless": false,
    "country": "United Kingdom",
    "method": "model_country_match_plus_uk_format_validation",
    "min_valid_plate_len": 5,
    "strict_uk_plate_validation": true
  },
  "model": {
    "detector": "yolo-v9-t-384-license-plate-end2end",
    "detector_conf_thresh": 0.4,
    "ocr": "cct-s-v2-global-model"
  },
  "processing_ms": 7.58,
  "rejected_count": 1,
  "rejected_detections": [
    {
      "bbox": [
        284.0,
        244.0,
        337.0,
        263.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.7027153968811035,
      "filename": "frame_000006_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.9932095408439636,
        0.9965536594390868,
        0.9977700710296632,
        0.7378131151199341,
        0.8748854994773865,
        0.7873955368995667,
        0.6753683090209961,
        0.998984396457672,
        0.9997147917747498,
        0.9998714923858644
      ],
      "ocr_confidence": 0.9061566412448884,
      "ocr_min_char_confidence": 0.6753683090209961,
      "plate": "E11MUX",
      "plate_validation": {
        "format": "prefix",
        "input": "E11MUX",
        "normalised": "E11MUX",
        "reasons": [],
        "valid": true
      },
      "polygon": null,
      "quality": {
        "area_score": 0.1599,
        "bbox": {
          "area_ratio": 0.001999,
          "height_px": 19,
          "min_margin_px": 244,
          "required_margin_px": 8,
          "width_px": 53
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 1.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.7552,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 284,
            "x2": 337,
            "y1": 244,
            "y2": 263
          },
          "confidence": 0.7027153968811035,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.9932095408439636,
            0.9965536594390868,
            0.9977700710296632,
            0.7378131151199341,
            0.8748854994773865,
            0.7873955368995667,
            0.6753683090209961,
            0.998984396457672,
            0.9997147917747498,
            0.9998714923858644
          ],
          "region": "United Kingdom",
          "region_confidence": 0.9999974966049194,
          "text": "E11MUX"
        }
      },
      "rejected": true,
      "rejection_reasons": [
        "plate_box_too_narrow"
      ]
    }
  ],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 7 · 1.21s

Input ALPR input
Full Frame Full frame
Count 0 Unfiltered 1 No candidate

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 0,
  "detections": [],
  "filter": {
    "accept_short_dateless": false,
    "country": "United Kingdom",
    "method": "model_country_match_plus_uk_format_validation",
    "min_valid_plate_len": 5,
    "strict_uk_plate_validation": true
  },
  "model": {
    "detector": "yolo-v9-t-384-license-plate-end2end",
    "detector_conf_thresh": 0.4,
    "ocr": "cct-s-v2-global-model"
  },
  "processing_ms": 7.62,
  "rejected_count": 1,
  "rejected_detections": [
    {
      "bbox": [
        395.0,
        322.0,
        451.0,
        344.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.8654565215110779,
      "filename": "frame_000007_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.98273104429245,
        0.9216991662979126,
        0.9766839146614076,
        0.4847693741321564,
        0.7188606858253479,
        0.19095243513584137,
        0.4947580099105835,
        0.9860994219779968,
        0.9978135824203492,
        0.9992278814315796
      ],
      "ocr_confidence": 0.7753595516085625,
      "ocr_min_char_confidence": 0.19095243513584137,
      "plate": "E11MUUY",
      "plate_validation": {
        "format": null,
        "input": "E11MUUY",
        "normalised": "E11MUUY",
        "reasons": [
          "no_uk_format_match"
        ],
        "valid": false
      },
      "polygon": null,
      "quality": {
        "area_score": 0.1957,
        "bbox": {
          "area_ratio": 0.002446,
          "height_px": 22,
          "min_margin_px": 296,
          "required_margin_px": 8,
          "width_px": 56
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 0.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.6582,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 395,
            "x2": 451,
            "y1": 322,
            "y2": 344
          },
          "confidence": 0.8654565215110779,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.98273104429245,
            0.9216991662979126,
            0.9766839146614076,
            0.4847693741321564,
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            0.19095243513584137,
            0.4947580099105835,
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            0.9978135824203492,
            0.9992278814315796
          ],
          "region": "United Kingdom",
          "region_confidence": 0.9995139837265016,
          "text": "E11MUUY"
        }
      },
      "rejected": true,
      "rejection_reasons": [
        "no_uk_format_match"
      ]
    }
  ],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 8 · 1.50s

Input ALPR input
Full Frame Full frame
Count 0 Unfiltered 1 No candidate

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 0,
  "detections": [],
  "filter": {
    "accept_short_dateless": false,
    "country": "United Kingdom",
    "method": "model_country_match_plus_uk_format_validation",
    "min_valid_plate_len": 5,
    "strict_uk_plate_validation": true
  },
  "model": {
    "detector": "yolo-v9-t-384-license-plate-end2end",
    "detector_conf_thresh": 0.4,
    "ocr": "cct-s-v2-global-model"
  },
  "processing_ms": 8.36,
  "rejected_count": 1,
  "rejected_detections": [
    {
      "bbox": [
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        444.0,
        626.0,
        471.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.8760749697685242,
      "filename": "frame_000008_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
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        0.9905726313591005,
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      ],
      "ocr_confidence": 0.650170236825943,
      "ocr_min_char_confidence": 0.2080020159482956,
      "plate": "E11MC0K",
      "plate_validation": {
        "format": null,
        "input": "E11MC0K",
        "normalised": "E11MC0K",
        "reasons": [
          "no_uk_format_match"
        ],
        "valid": false
      },
      "polygon": null,
      "quality": {
        "area_score": 0.253,
        "bbox": {
          "area_ratio": 0.003163,
          "height_px": 27,
          "min_margin_px": 161,
          "required_margin_px": 8,
          "width_px": 59
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 0.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.6333,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 567,
            "x2": 626,
            "y1": 444,
            "y2": 471
          },
          "confidence": 0.8760749697685242,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
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            0.5833654999732971,
            0.8396158814430237,
            0.4396902322769165,
            0.2640129625797272,
            0.2080020159482956,
            0.24513445794582367,
            0.9398002028465272,
            0.9905726313591005,
            0.9972385168075562
          ],
          "region": "United Kingdom",
          "region_confidence": 0.9453462958335876,
          "text": "E11MC0K"
        }
      },
      "rejected": true,
      "rejection_reasons": [
        "no_uk_format_match"
      ]
    }
  ],
  "unfiltered_count": 1
}