Event Debug

ALPR Debug

Event #373459
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 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": 11.22,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}

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": 6.03,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}

event_snapshot_plate_bbox

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": 8.67,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}

recording_snapshot_frame

Frame 1 · -0.50s

Input ALPR input
Full Frame Full frame
Count 1 Unfiltered 1 Detect 0.77 OCR 0.86 Candidate found

Best Candidate

Best candidate extracted from the service response for this attempt.

{
  "bbox": [
    243.0,
    126.0,
    307.0,
    149.0
  ],
  "confidence": 0.7741745114326477,
  "country_match": "United Kingdom",
  "detection_confidence": 0.7741745114326477,
  "filename": "frame_000001_focus.jpg",
  "frame_index": 0.0,
  "ocr_confidence": 0.8605387270450592,
  "plate_height_px": 23.0,
  "plate_width_px": 64.0,
  "quality_score": 0.7683,
  "raw": {
    "bbox": [
      243.0,
      126.0,
      307.0,
      149.0
    ],
    "country_match": "United Kingdom",
    "detection_confidence": 0.7741745114326477,
    "filename": "frame_000001_focus.jpg",
    "frame_index": 0,
    "ocr_char_confidences": [
      0.7159293293952942,
      0.9106335639953612,
      0.8633860349655151,
      0.5497617721557617,
      0.8861215710639954,
      0.7275489568710327,
      0.9541227221488952,
      0.9982879757881165,
      0.9997071623802184,
      0.9998881816864014
    ],
    "ocr_confidence": 0.8605387270450592,
    "ocr_min_char_confidence": 0.5497617721557617,
    "plate": "AK35VRT",
    "plate_validation": {
      "format": "current_gb",
      "input": "AK35VRT",
      "normalised": "AK35VRT",
      "reasons": [],
      "valid": true
    },
    "polygon": null,
    "quality": {
      "area_score": 0.2214,
      "bbox": {
        "area_ratio": 0.002767,
        "height_px": 23,
        "min_margin_px": 126,
        "required_margin_px": 8,
        "width_px": 64
      },
      "country_score": 1.0,
      "edge_penalty": 0.0,
      "format_score": 1.0,
      "sharpness_score": 1.0
    },
    "quality_score": 0.7683,
    "raw": {
      "detection": {
        "bounding_box": {
          "x1": 243,
          "x2": 307,
          "y1": 126,
          "y2": 149
        },
        "confidence": 0.7741745114326477,
        "label": "License Plate"
      },
      "ocr": {
        "confidence": [
          0.7159293293952942,
          0.9106335639953612,
          0.8633860349655151,
          0.5497617721557617,
          0.8861215710639954,
          0.7275489568710327,
          0.9541227221488952,
          0.9982879757881165,
          0.9997071623802184,
          0.9998881816864014
        ],
        "region": "United Kingdom",
        "region_confidence": 0.4526949226856232,
        "text": "AK35VRT"
      }
    },
    "rejected": false,
    "rejection_reasons": []
  },
  "rejected": false,
  "text": "AK35VRT"
}

Service Payload

Sanitized ALPR response for this attempt.

{
  "annotated": true,
  "annotated_image_base64": "\u003comitted\u003e",
  "count": 1,
  "detections": [
    {
      "bbox": [
        243.0,
        126.0,
        307.0,
        149.0
      ],
      "country_match": "United Kingdom",
      "detection_confidence": 0.7741745114326477,
      "filename": "frame_000001_focus.jpg",
      "frame_index": 0,
      "ocr_char_confidences": [
        0.7159293293952942,
        0.9106335639953612,
        0.8633860349655151,
        0.5497617721557617,
        0.8861215710639954,
        0.7275489568710327,
        0.9541227221488952,
        0.9982879757881165,
        0.9997071623802184,
        0.9998881816864014
      ],
      "ocr_confidence": 0.8605387270450592,
      "ocr_min_char_confidence": 0.5497617721557617,
      "plate": "AK35VRT",
      "plate_validation": {
        "format": "current_gb",
        "input": "AK35VRT",
        "normalised": "AK35VRT",
        "reasons": [],
        "valid": true
      },
      "polygon": null,
      "quality": {
        "area_score": 0.2214,
        "bbox": {
          "area_ratio": 0.002767,
          "height_px": 23,
          "min_margin_px": 126,
          "required_margin_px": 8,
          "width_px": 64
        },
        "country_score": 1.0,
        "edge_penalty": 0.0,
        "format_score": 1.0,
        "sharpness_score": 1.0
      },
      "quality_score": 0.7683,
      "raw": {
        "detection": {
          "bounding_box": {
            "x1": 243,
            "x2": 307,
            "y1": 126,
            "y2": 149
          },
          "confidence": 0.7741745114326477,
          "label": "License Plate"
        },
        "ocr": {
          "confidence": [
            0.7159293293952942,
            0.9106335639953612,
            0.8633860349655151,
            0.5497617721557617,
            0.8861215710639954,
            0.7275489568710327,
            0.9541227221488952,
            0.9982879757881165,
            0.9997071623802184,
            0.9998881816864014
          ],
          "region": "United Kingdom",
          "region_confidence": 0.4526949226856232,
          "text": "AK35VRT"
        }
      },
      "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": 16.39,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 1
}

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": 7.58,
  "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 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": 16.96,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}

recording_snapshot_frame

Frame 4 · 0.36s

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": 10.61,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}

recording_snapshot_frame

Frame 5 · 0.64s

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": 6.03,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}

recording_snapshot_frame

Frame 6 · 0.93s

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": 11.4,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}

recording_snapshot_frame

Frame 7 · 1.21s

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": 10.97,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}

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": 6.35,
  "rejected_count": 0,
  "rejected_detections": [],
  "unfiltered_count": 0
}