Event Debug

ALPR Debug

Event #373453
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": 11.18,
  "rejected_count": 0,
  "rejected_detections": [],
  "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": 6.01,
  "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": 51.74,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 1 · -0.50s

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": 8.94,
  "rejected_count": 1,
  "rejected_detections": [
    {
      "bbox": [
        0.0,
        42.0,
        40.0,
        59.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.7162709832191467,
      "filename": "frame_000001_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.2263772189617157,
        0.2927206754684448,
        0.4121026694774628,
        0.17846424877643585,
        0.1830197423696518,
        0.21039262413978577,
        0.5778151154518127,
        0.9964091181755066,
        0.9994452595710754,
        0.999599039554596
      ],
      "ocr_confidence": 0.5076345711946487,
      "ocr_min_char_confidence": 0.17846424877643585,
      "plate": "K866WW",
      "plate_validation": {
        "format": null,
        "input": "K866WW",
        "normalised": "K866WW",
        "reasons": [
          "no_uk_format_match"
        ],
        "valid": false
      },
      "polygon": null,
      "quality": {
        "area_score": 0.1031,
        "bbox": {
          "area_ratio": 0.001289,
          "height_px": 17,
          "min_margin_px": 0,
          "required_margin_px": 8,
          "width_px": 40
        },
        "country_score": 1.0,
        "edge_penalty": 0.35,
        "format_score": 0.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.1784,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 0,
            "x2": 40,
            "y1": 42,
            "y2": 59
          },
          "confidence": 0.7162709832191467,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.2263772189617157,
            0.2927206754684448,
            0.4121026694774628,
            0.17846424877643585,
            0.1830197423696518,
            0.21039262413978577,
            0.5778151154518127,
            0.9964091181755066,
            0.9994452595710754,
            0.999599039554596
          ],
          "region": "United Kingdom",
          "region_confidence": 0.9962111711502076,
          "text": "K866WW"
        }
      },
      "rejected": true,
      "rejection_reasons": [
        "low_quality_score",
        "no_uk_format_match",
        "plate_box_too_close_to_frame_edge",
        "plate_box_too_narrow"
      ]
    }
  ],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 2 · -0.21s

Input ALPR input
Full Frame Full frame
Count 1 Unfiltered 1 Detect 0.76 OCR 0.85 Candidate found

Best Candidate

Best candidate extracted from the service response for this attempt.

{
  "bbox": [
    39.0,
    75.0,
    95.0,
    94.0
  ],
  "confidence": 0.7558904886245728,
  "country_match": "United Kingdom",
  "detection_confidence": 0.7558904886245728,
  "filename": "frame_000002_focus.jpg",
  "frame_index": 0.0,
  "ocr_confidence": 0.8495057553052903,
  "plate_height_px": 19.0,
  "plate_width_px": 56.0,
  "quality_score": 0.7502,
  "raw": {
    "bbox": [
      39.0,
      75.0,
      95.0,
      94.0
    ],
    "country_match": "United Kingdom",
    "detection_confidence": 0.7558904886245728,
    "filename": "frame_000002_focus.jpg",
    "frame_index": 0,
    "ocr_char_confidences": [
      0.77006596326828,
      0.9888511300086976,
      0.51577228307724,
      0.97358638048172,
      0.9788757562637328,
      0.36226943135261536,
      0.9056525826454164,
      0.999991536140442,
      0.9999955892562866,
      0.9999969005584716
    ],
    "ocr_confidence": 0.8495057553052903,
    "ocr_min_char_confidence": 0.36226943135261536,
    "plate": "YK25NRW",
    "plate_validation": {
      "format": "current_gb",
      "input": "YK25NRW",
      "normalised": "YK25NRW",
      "reasons": [],
      "valid": true
    },
    "polygon": null,
    "quality": {
      "area_score": 0.1614,
      "bbox": {
        "area_ratio": 0.002017,
        "height_px": 19,
        "min_margin_px": 39,
        "required_margin_px": 8,
        "width_px": 56
      },
      "country_score": 1.0,
      "edge_penalty": 0.0,
      "format_score": 1.0,
      "sharpness_score": 1.0
    },
    "quality_score": 0.7502,
    "raw": {
      "detection": {
        "bounding_box": {
          "x1": 39,
          "x2": 95,
          "y1": 75,
          "y2": 94
        },
        "confidence": 0.7558904886245728,
        "label": "License Plate"
      },
      "ocr": {
        "confidence": [
          0.77006596326828,
          0.9888511300086976,
          0.51577228307724,
          0.97358638048172,
          0.9788757562637328,
          0.36226943135261536,
          0.9056525826454164,
          0.999991536140442,
          0.9999955892562866,
          0.9999969005584716
        ],
        "region": "United Kingdom",
        "region_confidence": 0.9999990463256836,
        "text": "YK25NRW"
      }
    },
    "rejected": false,
    "rejection_reasons": []
  },
  "rejected": false,
  "text": "YK25NRW"
}

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 1,
  "detections": [
    {
      "bbox": [
        39.0,
        75.0,
        95.0,
        94.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.7558904886245728,
      "filename": "frame_000002_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.77006596326828,
        0.9888511300086976,
        0.51577228307724,
        0.97358638048172,
        0.9788757562637328,
        0.36226943135261536,
        0.9056525826454164,
        0.999991536140442,
        0.9999955892562866,
        0.9999969005584716
      ],
      "ocr_confidence": 0.8495057553052903,
      "ocr_min_char_confidence": 0.36226943135261536,
      "plate": "YK25NRW",
      "plate_validation": {
        "format": "current_gb",
        "input": "YK25NRW",
        "normalised": "YK25NRW",
        "reasons": [],
        "valid": true
      },
      "polygon": null,
      "quality": {
        "area_score": 0.1614,
        "bbox": {
          "area_ratio": 0.002017,
          "height_px": 19,
          "min_margin_px": 39,
          "required_margin_px": 8,
          "width_px": 56
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 1.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.7502,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 39,
            "x2": 95,
            "y1": 75,
            "y2": 94
          },
          "confidence": 0.7558904886245728,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.77006596326828,
            0.9888511300086976,
            0.51577228307724,
            0.97358638048172,
            0.9788757562637328,
            0.36226943135261536,
            0.9056525826454164,
            0.999991536140442,
            0.9999955892562866,
            0.9999969005584716
          ],
          "region": "United Kingdom",
          "region_confidence": 0.9999990463256836,
          "text": "YK25NRW"
        }
      },
      "rejected": false,
      "rejection_reasons": []
    }
  ],
  "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": 14.26,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 3 · 0.07s

Input ALPR input
Full Frame Full frame
Count 1 Unfiltered 1 Detect 0.80 OCR 0.81 Candidate found

Best Candidate

Best candidate extracted from the service response for this attempt.

{
  "bbox": [
    108.0,
    124.0,
    170.0,
    145.0
  ],
  "confidence": 0.8007211089134216,
  "country_match": "United Kingdom",
  "detection_confidence": 0.8007211089134216,
  "filename": "frame_000003_focus.jpg",
  "frame_index": 0.0,
  "ocr_confidence": 0.812396439909935,
  "plate_height_px": 21.0,
  "plate_width_px": 62.0,
  "quality_score": 0.7554,
  "raw": {
    "bbox": [
      108.0,
      124.0,
      170.0,
      145.0
    ],
    "country_match": "United Kingdom",
    "detection_confidence": 0.8007211089134216,
    "filename": "frame_000003_focus.jpg",
    "frame_index": 0,
    "ocr_char_confidences": [
      0.8304367661476135,
      0.49323341250419617,
      0.5919672250747681,
      0.7837134003639221,
      0.9410641193389891,
      0.7859404683113098,
      0.6976411938667297,
      0.9999791383743286,
      0.999992847442627,
      0.9999958276748656
    ],
    "ocr_confidence": 0.812396439909935,
    "ocr_min_char_confidence": 0.49323341250419617,
    "plate": "WK25AVV",
    "plate_validation": {
      "format": "current_gb",
      "input": "WK25AVV",
      "normalised": "WK25AVV",
      "reasons": [],
      "valid": true
    },
    "polygon": null,
    "quality": {
      "area_score": 0.1975,
      "bbox": {
        "area_ratio": 0.002468,
        "height_px": 21,
        "min_margin_px": 108,
        "required_margin_px": 8,
        "width_px": 62
      },
      "country_score": 1.0,
      "edge_penalty": 0.0,
      "format_score": 1.0,
      "sharpness_score": 1.0
    },
    "quality_score": 0.7554,
    "raw": {
      "detection": {
        "bounding_box": {
          "x1": 108,
          "x2": 170,
          "y1": 124,
          "y2": 145
        },
        "confidence": 0.8007211089134216,
        "label": "License Plate"
      },
      "ocr": {
        "confidence": [
          0.8304367661476135,
          0.49323341250419617,
          0.5919672250747681,
          0.7837134003639221,
          0.9410641193389891,
          0.7859404683113098,
          0.6976411938667297,
          0.9999791383743286,
          0.999992847442627,
          0.9999958276748656
        ],
        "region": "United Kingdom",
        "region_confidence": 0.999566376209259,
        "text": "WK25AVV"
      }
    },
    "rejected": false,
    "rejection_reasons": []
  },
  "rejected": false,
  "text": "WK25AVV"
}

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 1,
  "detections": [
    {
      "bbox": [
        108.0,
        124.0,
        170.0,
        145.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.8007211089134216,
      "filename": "frame_000003_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.8304367661476135,
        0.49323341250419617,
        0.5919672250747681,
        0.7837134003639221,
        0.9410641193389891,
        0.7859404683113098,
        0.6976411938667297,
        0.9999791383743286,
        0.999992847442627,
        0.9999958276748656
      ],
      "ocr_confidence": 0.812396439909935,
      "ocr_min_char_confidence": 0.49323341250419617,
      "plate": "WK25AVV",
      "plate_validation": {
        "format": "current_gb",
        "input": "WK25AVV",
        "normalised": "WK25AVV",
        "reasons": [],
        "valid": true
      },
      "polygon": null,
      "quality": {
        "area_score": 0.1975,
        "bbox": {
          "area_ratio": 0.002468,
          "height_px": 21,
          "min_margin_px": 108,
          "required_margin_px": 8,
          "width_px": 62
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 1.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.7554,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 108,
            "x2": 170,
            "y1": 124,
            "y2": 145
          },
          "confidence": 0.8007211089134216,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.8304367661476135,
            0.49323341250419617,
            0.5919672250747681,
            0.7837134003639221,
            0.9410641193389891,
            0.7859404683113098,
            0.6976411938667297,
            0.9999791383743286,
            0.999992847442627,
            0.9999958276748656
          ],
          "region": "United Kingdom",
          "region_confidence": 0.999566376209259,
          "text": "WK25AVV"
        }
      },
      "rejected": false,
      "rejection_reasons": []
    }
  ],
  "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": 19.47,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 4 · 0.36s

Input ALPR input
Full Frame Full frame
Count 1 Unfiltered 1 Detect 0.87 OCR 0.87 Candidate found

Best Candidate

Best candidate extracted from the service response for this attempt.

{
  "bbox": [
    209.0,
    193.0,
    274.0,
    216.0
  ],
  "confidence": 0.8698246479034424,
  "country_match": "United Kingdom",
  "detection_confidence": 0.8698246479034424,
  "filename": "frame_000004_focus.jpg",
  "frame_index": 0.0,
  "ocr_confidence": 0.8705986708402633,
  "plate_height_px": 23.0,
  "plate_width_px": 65.0,
  "quality_score": 0.7934,
  "raw": {
    "bbox": [
      209.0,
      193.0,
      274.0,
      216.0
    ],
    "country_match": "United Kingdom",
    "detection_confidence": 0.8698246479034424,
    "filename": "frame_000004_focus.jpg",
    "frame_index": 0,
    "ocr_char_confidences": [
      0.9304645657539368,
      0.9919183850288392,
      0.94217711687088,
      0.8442295789718628,
      0.7304664850234985,
      0.49323341250419617,
      0.7736571431159973,
      0.9998763799667358,
      0.9999791383743286,
      0.9999845027923584
    ],
    "ocr_confidence": 0.8705986708402633,
    "ocr_min_char_confidence": 0.49323341250419617,
    "plate": "VK26NVV",
    "plate_validation": {
      "format": "current_gb",
      "input": "VK26NVV",
      "normalised": "VK26NVV",
      "reasons": [],
      "valid": true
    },
    "polygon": null,
    "quality": {
      "area_score": 0.2268,
      "bbox": {
        "area_ratio": 0.002834,
        "height_px": 23,
        "min_margin_px": 193,
        "required_margin_px": 8,
        "width_px": 65
      },
      "country_score": 1.0,
      "edge_penalty": 0.0,
      "format_score": 1.0,
      "sharpness_score": 1.0
    },
    "quality_score": 0.7934,
    "raw": {
      "detection": {
        "bounding_box": {
          "x1": 209,
          "x2": 274,
          "y1": 193,
          "y2": 216
        },
        "confidence": 0.8698246479034424,
        "label": "License Plate"
      },
      "ocr": {
        "confidence": [
          0.9304645657539368,
          0.9919183850288392,
          0.94217711687088,
          0.8442295789718628,
          0.7304664850234985,
          0.49323341250419617,
          0.7736571431159973,
          0.9998763799667358,
          0.9999791383743286,
          0.9999845027923584
        ],
        "region": "United Kingdom",
        "region_confidence": 0.982186198234558,
        "text": "VK26NVV"
      }
    },
    "rejected": false,
    "rejection_reasons": []
  },
  "rejected": false,
  "text": "VK26NVV"
}

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 1,
  "detections": [
    {
      "bbox": [
        209.0,
        193.0,
        274.0,
        216.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.8698246479034424,
      "filename": "frame_000004_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.9304645657539368,
        0.9919183850288392,
        0.94217711687088,
        0.8442295789718628,
        0.7304664850234985,
        0.49323341250419617,
        0.7736571431159973,
        0.9998763799667358,
        0.9999791383743286,
        0.9999845027923584
      ],
      "ocr_confidence": 0.8705986708402633,
      "ocr_min_char_confidence": 0.49323341250419617,
      "plate": "VK26NVV",
      "plate_validation": {
        "format": "current_gb",
        "input": "VK26NVV",
        "normalised": "VK26NVV",
        "reasons": [],
        "valid": true
      },
      "polygon": null,
      "quality": {
        "area_score": 0.2268,
        "bbox": {
          "area_ratio": 0.002834,
          "height_px": 23,
          "min_margin_px": 193,
          "required_margin_px": 8,
          "width_px": 65
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 1.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.7934,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 209,
            "x2": 274,
            "y1": 193,
            "y2": 216
          },
          "confidence": 0.8698246479034424,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.9304645657539368,
            0.9919183850288392,
            0.94217711687088,
            0.8442295789718628,
            0.7304664850234985,
            0.49323341250419617,
            0.7736571431159973,
            0.9998763799667358,
            0.9999791383743286,
            0.9999845027923584
          ],
          "region": "United Kingdom",
          "region_confidence": 0.982186198234558,
          "text": "VK26NVV"
        }
      },
      "rejected": false,
      "rejection_reasons": []
    }
  ],
  "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": 8.25,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 5 · 0.64s

Input ALPR input
Full Frame Full frame
Count 1 Unfiltered 1 Detect 0.88 OCR 0.73 Candidate found

Best Candidate

Best candidate extracted from the service response for this attempt.

{
  "bbox": [
    317.0,
    270.0,
    388.0,
    295.0
  ],
  "confidence": 0.8849323391914368,
  "country_match": "United Kingdom",
  "detection_confidence": 0.8849323391914368,
  "filename": "frame_000005_focus.jpg",
  "frame_index": 0.0,
  "ocr_confidence": 0.7323572695255279,
  "plate_height_px": 25.0,
  "plate_width_px": 71.0,
  "quality_score": 0.7629,
  "raw": {
    "bbox": [
      317.0,
      270.0,
      388.0,
      295.0
    ],
    "country_match": "United Kingdom",
    "detection_confidence": 0.8849323391914368,
    "filename": "frame_000005_focus.jpg",
    "frame_index": 0,
    "ocr_char_confidences": [
      0.39439529180526733,
      0.571111798286438,
      0.9522700905799866,
      0.8112425208091736,
      0.5560656189918518,
      0.3525502681732178,
      0.6859517693519592,
      0.999990701675415,
      0.999996781349182,
      0.999997854232788
    ],
    "ocr_confidence": 0.7323572695255279,
    "ocr_min_char_confidence": 0.3525502681732178,
    "plate": "WK26NYW",
    "plate_validation": {
      "format": "current_gb",
      "input": "WK26NYW",
      "normalised": "WK26NYW",
      "reasons": [],
      "valid": true
    },
    "polygon": null,
    "quality": {
      "area_score": 0.2692,
      "bbox": {
        "area_ratio": 0.003365,
        "height_px": 25,
        "min_margin_px": 270,
        "required_margin_px": 8,
        "width_px": 71
      },
      "country_score": 1.0,
      "edge_penalty": 0.0,
      "format_score": 1.0,
      "sharpness_score": 1.0
    },
    "quality_score": 0.7629,
    "raw": {
      "detection": {
        "bounding_box": {
          "x1": 317,
          "x2": 388,
          "y1": 270,
          "y2": 295
        },
        "confidence": 0.8849323391914368,
        "label": "License Plate"
      },
      "ocr": {
        "confidence": [
          0.39439529180526733,
          0.571111798286438,
          0.9522700905799866,
          0.8112425208091736,
          0.5560656189918518,
          0.3525502681732178,
          0.6859517693519592,
          0.999990701675415,
          0.999996781349182,
          0.999997854232788
        ],
        "region": "United Kingdom",
        "region_confidence": 0.9411890506744384,
        "text": "WK26NYW"
      }
    },
    "rejected": false,
    "rejection_reasons": []
  },
  "rejected": false,
  "text": "WK26NYW"
}

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 1,
  "detections": [
    {
      "bbox": [
        317.0,
        270.0,
        388.0,
        295.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.8849323391914368,
      "filename": "frame_000005_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.39439529180526733,
        0.571111798286438,
        0.9522700905799866,
        0.8112425208091736,
        0.5560656189918518,
        0.3525502681732178,
        0.6859517693519592,
        0.999990701675415,
        0.999996781349182,
        0.999997854232788
      ],
      "ocr_confidence": 0.7323572695255279,
      "ocr_min_char_confidence": 0.3525502681732178,
      "plate": "WK26NYW",
      "plate_validation": {
        "format": "current_gb",
        "input": "WK26NYW",
        "normalised": "WK26NYW",
        "reasons": [],
        "valid": true
      },
      "polygon": null,
      "quality": {
        "area_score": 0.2692,
        "bbox": {
          "area_ratio": 0.003365,
          "height_px": 25,
          "min_margin_px": 270,
          "required_margin_px": 8,
          "width_px": 71
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 1.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.7629,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 317,
            "x2": 388,
            "y1": 270,
            "y2": 295
          },
          "confidence": 0.8849323391914368,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.39439529180526733,
            0.571111798286438,
            0.9522700905799866,
            0.8112425208091736,
            0.5560656189918518,
            0.3525502681732178,
            0.6859517693519592,
            0.999990701675415,
            0.999996781349182,
            0.999997854232788
          ],
          "region": "United Kingdom",
          "region_confidence": 0.9411890506744384,
          "text": "WK26NYW"
        }
      },
      "rejected": false,
      "rejection_reasons": []
    }
  ],
  "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": 0,
  "rejected_detections": [],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 6 · 0.93s

Input ALPR input
Full Frame Full frame
Count 1 Unfiltered 1 Detect 0.87 OCR 0.66 Candidate found

Best Candidate

Best candidate extracted from the service response for this attempt.

{
  "bbox": [
    450.0,
    365.0,
    524.0,
    391.0
  ],
  "confidence": 0.8717424869537354,
  "country_match": "United Kingdom",
  "detection_confidence": 0.8717424869537354,
  "filename": "frame_000006_focus.jpg",
  "frame_index": 0.0,
  "ocr_confidence": 0.6558001875877381,
  "plate_height_px": 26.0,
  "plate_width_px": 74.0,
  "quality_score": 0.7411,
  "raw": {
    "bbox": [
      450.0,
      365.0,
      524.0,
      391.0
    ],
    "country_match": "United Kingdom",
    "detection_confidence": 0.8717424869537354,
    "filename": "frame_000006_focus.jpg",
    "frame_index": 0,
    "ocr_char_confidences": [
      0.26094579696655273,
      0.8809825778007507,
      0.41956281661987305,
      0.5865147113800049,
      0.785272479057312,
      0.2257595658302307,
      0.4166950583457947,
      0.9831437468528748,
      0.999360978603363,
      0.9997641444206238
    ],
    "ocr_confidence": 0.6558001875877381,
    "ocr_min_char_confidence": 0.2257595658302307,
    "plate": "YK28KWV",
    "plate_validation": {
      "format": "current_gb",
      "input": "YK28KWV",
      "normalised": "YK28KWV",
      "reasons": [],
      "valid": true
    },
    "polygon": null,
    "quality": {
      "area_score": 0.2918,
      "bbox": {
        "area_ratio": 0.003648,
        "height_px": 26,
        "min_margin_px": 246,
        "required_margin_px": 8,
        "width_px": 74
      },
      "country_score": 1.0,
      "edge_penalty": 0.0,
      "format_score": 1.0,
      "sharpness_score": 1.0
    },
    "quality_score": 0.7411,
    "raw": {
      "detection": {
        "bounding_box": {
          "x1": 450,
          "x2": 524,
          "y1": 365,
          "y2": 391
        },
        "confidence": 0.8717424869537354,
        "label": "License Plate"
      },
      "ocr": {
        "confidence": [
          0.26094579696655273,
          0.8809825778007507,
          0.41956281661987305,
          0.5865147113800049,
          0.785272479057312,
          0.2257595658302307,
          0.4166950583457947,
          0.9831437468528748,
          0.999360978603363,
          0.9997641444206238
        ],
        "region": "United Kingdom",
        "region_confidence": 0.9317326545715332,
        "text": "YK28KWV"
      }
    },
    "rejected": false,
    "rejection_reasons": []
  },
  "rejected": false,
  "text": "YK28KWV"
}

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 1,
  "detections": [
    {
      "bbox": [
        450.0,
        365.0,
        524.0,
        391.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.8717424869537354,
      "filename": "frame_000006_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.26094579696655273,
        0.8809825778007507,
        0.41956281661987305,
        0.5865147113800049,
        0.785272479057312,
        0.2257595658302307,
        0.4166950583457947,
        0.9831437468528748,
        0.999360978603363,
        0.9997641444206238
      ],
      "ocr_confidence": 0.6558001875877381,
      "ocr_min_char_confidence": 0.2257595658302307,
      "plate": "YK28KWV",
      "plate_validation": {
        "format": "current_gb",
        "input": "YK28KWV",
        "normalised": "YK28KWV",
        "reasons": [],
        "valid": true
      },
      "polygon": null,
      "quality": {
        "area_score": 0.2918,
        "bbox": {
          "area_ratio": 0.003648,
          "height_px": 26,
          "min_margin_px": 246,
          "required_margin_px": 8,
          "width_px": 74
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 1.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.7411,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 450,
            "x2": 524,
            "y1": 365,
            "y2": 391
          },
          "confidence": 0.8717424869537354,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.26094579696655273,
            0.8809825778007507,
            0.41956281661987305,
            0.5865147113800049,
            0.785272479057312,
            0.2257595658302307,
            0.4166950583457947,
            0.9831437468528748,
            0.999360978603363,
            0.9997641444206238
          ],
          "region": "United Kingdom",
          "region_confidence": 0.9317326545715332,
          "text": "YK28KWV"
        }
      },
      "rejected": false,
      "rejection_reasons": []
    }
  ],
  "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": 8.09,
  "rejected_count": 0,
  "rejected_detections": [],
  "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": 11.53,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 1
}

recording_snapshot_frame

Frame 8 · 1.50s

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": 14.47,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}