Suppress duplicate YOLO tile detections

.env.example

@@ -16,6 +16,7 @@ YOLO_DEVICE=cpu
 YOLO_IMAGE_SIZE=640
 YOLO_MAX_TILES=100
 YOLO_MAX_DETECTIONS=1000
+YOLO_DUPLICATE_IOU_THRESHOLD=0.5
 YOLO_BATCH_SIZE=1
 ENABLE_GRB_WFS=false
 GRB_WFS_URL=

CHANGELOG.md

@@ -7,6 +7,15 @@
 
 # Changelog
 
+## Sprint 149 YOLO duplicate suppression evidence (2026-07-09)
+
+- Added configured-YOLO cross-tile duplicate suppression before `Detection` rows are persisted.
+- Added `YOLO_DUPLICATE_IOU_THRESHOLD` with default `0.5`; `0` disables the GeoIntel-side pass for debugging.
+- Detection run result metadata now records raw candidate count, suppressed duplicate count and duplicate IoU threshold.
+- Calibration and quality matrix scripts now fetch detection run details and include raw/suppressed counts in summaries.
+- Updated Docker/Unraid env examples, API/AI/backend docs and detection pipeline notes.
+- No model was activated, no detections were faked, and no migration changed.
+
 ## Sprint 148 YOLO max-detection cap hardening (2026-07-09)
 
 - Added `YOLO_MAX_DETECTIONS` with default `1000` and forward it to Ultralytics as `max_det`.

backend/README.md

@@ -360,6 +360,7 @@ YOLO_DEVICE=cpu
 YOLO_IMAGE_SIZE=640
 YOLO_MAX_TILES=100
 YOLO_MAX_DETECTIONS=1000
+YOLO_DUPLICATE_IOU_THRESHOLD=0.5
 YOLO_BATCH_SIZE=1
 ```
 
@@ -389,6 +390,13 @@ The preflight checks configuration, dependency availability, local model file ex
 `1000` because dense building AOIs can exceed the upstream default cap of 300
 detections before QA/QC can measure recall honestly.
 
+`YOLO_DUPLICATE_IOU_THRESHOLD` controls GeoIntel-side cross-tile duplicate
+suppression after YOLO pixel boxes are converted to EPSG:4326 polygons and
+before `Detection` rows are persisted. Candidates are sorted by confidence per
+class; lower-confidence same-class candidates with geometry IoU greater than or
+equal to the threshold are suppressed. The default is `0.5`; set `0` to disable
+this post-processing for debugging.
+
 The same read-only status is available through the API and Detection Lab UI:
 
 ```bash
@@ -458,7 +466,8 @@ bash scripts/run_detection_calibration_sweep.sh http://192.168.10.150:1202
 
 The sweep creates one real persisted workflow run per threshold, fetches the
 persisted `QualityCheck`/`Metric` rows and writes a `calibration_summary.json`
-with detection count, score, precision, recall, F1, mean IoU and false
+with persisted detection count, raw candidate count, suppressed duplicate count,
+duplicate IoU threshold, score, precision, recall, F1, mean IoU and false
 positive/negative counts. It is intended to tune confidence/IoU/model choices,
 not to add new inference behavior.
 

backend/app/core/config.py

@@ -32,6 +32,7 @@ class Settings(BaseSettings):
     yolo_image_size: int = Field(default=640, validation_alias="YOLO_IMAGE_SIZE")
     yolo_max_tiles: int = Field(default=100, validation_alias="YOLO_MAX_TILES")
     yolo_max_detections: int = Field(default=1000, validation_alias="YOLO_MAX_DETECTIONS")
+    yolo_duplicate_iou_threshold: float = Field(default=0.5, ge=0.0, le=1.0, validation_alias="YOLO_DUPLICATE_IOU_THRESHOLD")
     yolo_batch_size: int = Field(default=1, validation_alias="YOLO_BATCH_SIZE")
     cors_origins: list[str] | str = Field(
         default=["http://localhost:5173", "http://127.0.0.1:5173"],

backend/app/services/detection_service.py

@@ -138,7 +138,7 @@ class DetectionService:
 
         if model.model_id == resolved_settings.yolo_model_id:
             try:
-                detections = DetectionService._run_configured_yolo(
+                detections, postprocess_summary = DetectionService._run_configured_yolo(
                     db=db,
                     project_id=project_id,
                     dataset_id=dataset_id,
@@ -165,7 +165,7 @@ class DetectionService:
                     error_code=exc.code,
                     message=exc.message,
                 )
-            DetectionService._mark_success(db, analysis_run, job, detection_count=len(detections))
+            DetectionService._mark_success(db, analysis_run, job, detection_count=len(detections), extra_result=postprocess_summary)
             return DetectionRunResponse(
                 analysis_run_id=analysis_run.id,
                 job_id=job.id,
@@ -454,8 +454,10 @@ class DetectionService:
         db.refresh(job)
 
     @staticmethod
-    def _mark_success(db, analysis_run: AnalysisRun, job: Job, detection_count: int) -> None:
+    def _mark_success(db, analysis_run: AnalysisRun, job: Job, detection_count: int, extra_result: dict[str, Any] | None = None) -> None:
         result = {"detection_count": detection_count}
+        if extra_result:
+            result.update(extra_result)
         analysis_run.status = "success"
         analysis_run.finished_at = DetectionService._now()
         analysis_run.result_json = result
@@ -536,13 +538,13 @@ class DetectionService:
         class_filter: list[str],
         settings: Settings,
         yolo_adapter_class: Type[YoloDetectionAdapter],
-    ) -> list[Detection]:
+    ) -> tuple[list[Detection], dict[str, Any]]:
         manifest = DetectionService._load_tile_manifest(tile_manifest_path, settings.yolo_max_tiles)
         model_path = Path(settings.yolo_model_path or "").expanduser()
         adapter = yolo_adapter_class(settings)
         model = adapter.load_model(model_path)
         allowed_classes = {DetectionService._canonical_class_name(value) for value in class_filter if DetectionService._canonical_class_name(value)}
-        persisted: list[Detection] = []
+        candidates: list[dict[str, Any]] = []
         manifest_crs = manifest.get("crs") or manifest.get("source_crs") or manifest.get("dataset_crs") or "EPSG:4326"
         for tile in manifest["tiles"]:
             tile_path = DetectionService._resolve_tile_path(tile, Path(tile_manifest_path or "").expanduser())
@@ -561,37 +563,87 @@ class DetectionService:
                 properties = dict(raw.get("properties") or {})
                 if model_class_name and model_class_name != class_name:
                     properties.setdefault("model_class_name", model_class_name)
-                detection = Detection(
-                    id=uuid.uuid4(),
-                    project_id=project_id,
-                    dataset_id=dataset_id,
-                    analysis_run_id=analysis_run.id,
-                    job_id=job.id,
-                    model_name=model_name,
-                    model_version=model_version,
-                    class_name=class_name,
-                    confidence=confidence,
-                    geometry=from_shape(geometry, srid=4326),
-                    bbox_json={
-                        "x_min": float(bbox[0]),
-                        "y_min": float(bbox[1]),
-                        "x_max": float(bbox[2]),
-                        "y_max": float(bbox[3]),
-                    },
-                    source_tile_path=str(tile_path),
-                    properties_json={**properties, "tile_index": tile.get("index")},
+                candidates.append(
+                    {
+                        "class_name": class_name,
+                        "confidence": confidence,
+                        "geometry": geometry,
+                        "bbox": bbox,
+                        "source_tile_path": str(tile_path),
+                        "properties": {**properties, "tile_index": tile.get("index")},
+                    }
                 )
-                db.add(detection)
-                persisted.append(detection)
+        filtered_candidates = DetectionService._suppress_duplicate_candidates(
+            candidates,
+            iou_threshold=float(settings.yolo_duplicate_iou_threshold),
+        )
+        persisted: list[Detection] = []
+        for candidate in filtered_candidates:
+            bbox = candidate["bbox"]
+            detection = Detection(
+                id=uuid.uuid4(),
+                project_id=project_id,
+                dataset_id=dataset_id,
+                analysis_run_id=analysis_run.id,
+                job_id=job.id,
+                model_name=model_name,
+                model_version=model_version,
+                class_name=candidate["class_name"],
+                confidence=candidate["confidence"],
+                geometry=from_shape(candidate["geometry"], srid=4326),
+                bbox_json={
+                    "x_min": float(bbox[0]),
+                    "y_min": float(bbox[1]),
+                    "x_max": float(bbox[2]),
+                    "y_max": float(bbox[3]),
+                },
+                source_tile_path=candidate["source_tile_path"],
+                properties_json=candidate["properties"],
+            )
+            db.add(detection)
+            persisted.append(detection)
         db.commit()
         for detection in persisted:
             db.refresh(detection)
-        return persisted
+        return persisted, {
+            "raw_detection_count": len(candidates),
+            "suppressed_detection_count": len(candidates) - len(filtered_candidates),
+            "duplicate_iou_threshold": float(settings.yolo_duplicate_iou_threshold),
+        }
 
     @staticmethod
     def _canonical_class_name(value: Any) -> str:
         return str(value or "").strip().casefold()
 
+    @staticmethod
+    def _suppress_duplicate_candidates(candidates: list[dict[str, Any]], iou_threshold: float) -> list[dict[str, Any]]:
+        if iou_threshold <= 0 or len(candidates) < 2:
+            return candidates
+        kept: list[dict[str, Any]] = []
+        for candidate in sorted(candidates, key=lambda item: float(item["confidence"]), reverse=True):
+            duplicate = False
+            for kept_candidate in kept:
+                if candidate["class_name"] != kept_candidate["class_name"]:
+                    continue
+                if DetectionService._geometry_iou(candidate["geometry"], kept_candidate["geometry"]) >= iou_threshold:
+                    duplicate = True
+                    break
+            if not duplicate:
+                kept.append(candidate)
+        return kept
+
+    @staticmethod
+    def _geometry_iou(left, right) -> float:
+        if left.is_empty or right.is_empty:
+            return 0.0
+        intersection_area = left.intersection(right).area
+        if intersection_area <= 0:
+            return 0.0
+        union_area = left.union(right).area
+        if union_area <= 0:
+            return 0.0
+        return intersection_area / union_area
+
     @staticmethod
     def _load_tile_manifest(tile_manifest_path: str | None, max_tiles: int) -> dict[str, Any]:
         if not tile_manifest_path:

backend/tests/test_docker_runtime_config.py

@@ -94,6 +94,7 @@ def test_env_example_uses_runtime_env_names_read_by_backend_and_frontend() -> No
     assert "YOLO_CONFIG_DIR=./storage/ultralytics" in env_example
     assert "YOLO_MAX_TILES=100" in env_example
     assert "YOLO_MAX_DETECTIONS=1000" in env_example
+    assert "YOLO_DUPLICATE_IOU_THRESHOLD=0.5" in env_example
     assert "ENABLE_YOLO" not in env_example
     assert "ENABLE_SAM" not in env_example
     assert "VITE_API_BASE_URL=" in env_example
@@ -247,4 +248,5 @@ def test_unraid_deploy_passes_ai_build_arg_and_yolo_runtime_env() -> None:
     assert '-e YOLO_MODEL_PATH="$YOLO_MODEL_PATH"' in run_script
     assert '-e YOLO_MAX_TILES="$YOLO_MAX_TILES"' in run_script
     assert '-e YOLO_MAX_DETECTIONS="$YOLO_MAX_DETECTIONS"' in run_script
+    assert '-e YOLO_DUPLICATE_IOU_THRESHOLD="$YOLO_DUPLICATE_IOU_THRESHOLD"' in run_script
     assert "-v \"${GEOINTEL_MODELS_PATH}:/app/models\"" in run_script

backend/tests/test_sprint124_detection_calibration_sweep.py

@@ -18,7 +18,11 @@ def test_detection_calibration_sweep_reuses_real_data_workflow_and_reports_qa_me
     assert "REAL_RASTER_PATH" in script
     assert "REAL_REFERENCE_VECTOR_PATH" in script
     assert "/api/v1/projects/${project_id}/quality-checks" in script
+    assert "/api/v1/detection/runs/${analysis_run_id}" in script
     assert "quality_check_id" in script
+    assert "raw_detection_count" in script
+    assert "suppressed_detection_count" in script
+    assert "duplicate_iou_threshold" in script
     assert "false_positives" in script
     assert "false_negatives" in script
     assert "quality_score" in script

backend/tests/test_sprint126_detection_quality_matrix.py

@@ -24,7 +24,11 @@ def test_detection_quality_matrix_compares_models_tiles_and_thresholds() -> None
     assert "REAL_RASTER_PATH" in script
     assert "REAL_REFERENCE_VECTOR_PATH" in script
     assert "/api/v1/projects/${project_id}/quality-checks" in script
+    assert "/api/v1/detection/runs/${analysis_run_id}" in script
     assert "quality_matrix_summary.json" in script
+    assert "raw_detection_count" in script
+    assert "suppressed_detection_count" in script
+    assert "duplicate_iou_threshold" in script
     assert "best_by_score" in script
     assert "best_by_recall" in script
     assert "best_by_precision" in script

backend/tests/test_sprint127_operator_sample_quality_matrix.py

@@ -66,6 +66,8 @@ def test_multi_sample_detection_quality_matrix_runs_existing_matrix_for_each_sam
     assert "best_overall_by_score" in script
     assert "best_by_sample" in script
     assert "sample_slug" in script
+    assert "raw_detection_count" in script
+    assert "suppressed_detection_count" in script
     assert "demo/workflow" not in script
     assert "fixture_mode" not in script
     assert "will_download_models" not in script

backend/tests/test_sprint8b_yolo_foundation.py

@@ -89,6 +89,25 @@ class MixedCaseYoloAdapter(MockYoloAdapter):
         ]
 
 
+class OverlappingTileYoloAdapter(MockYoloAdapter):
+    def predict_tile(self, model, tile_path: Path, confidence_threshold: float) -> list[dict]:
+        tile_index = int(tile_path.stem.split("_")[-1])
+        if tile_index == 0:
+            bbox = [10.0, 20.0, 30.0, 40.0]
+            confidence = 0.82
+        else:
+            bbox = [11.0, 21.0, 31.0, 41.0]
+            confidence = 0.91
+        return [
+            {
+                "class_name": "building",
+                "confidence": confidence,
+                "bbox": bbox,
+                "properties": {"adapter": "overlap"},
+            }
+        ]
+
+
 class RecordingPredictModel:
     def __init__(self) -> None:
         self.seen_sources: list[dict] = []
@@ -383,6 +402,37 @@ def test_yolo_class_filter_is_case_insensitive_and_persists_canonical_class(tmp_
     assert detections[0].properties_json["model_class_name"] == "Building"
 
 
+def test_yolo_run_suppresses_cross_tile_duplicate_detections(tmp_path: Path) -> None:
+    db, project_id, dataset_id = _project_and_dataset()
+    model_path = tmp_path / "model.pt"
+    model_path.write_bytes(b"local weights")
+    settings = _settings(tmp_path, yolo_model_path=str(model_path), yolo_duplicate_iou_threshold=0.5)
+    manifest_path = _manifest(tmp_path, tile_count=2)
+
+    result = DetectionService.run_detection(
+        db=db,
+        project_id=project_id,
+        dataset_id=dataset_id,
+        model_id="yolo-configured",
+        confidence_threshold=0.5,
+        class_filter=["building"],
+        tile_manifest_path=str(manifest_path),
+        settings=settings,
+        yolo_adapter_class=OverlappingTileYoloAdapter,
+    )
+
+    detections = [item for item in db.added if isinstance(item, Detection)]
+    runs = [item for item in db.added if isinstance(item, AnalysisRun)]
+
+    assert result.status == "success"
+    assert result.detection_count == 1
+    assert detections[0].confidence == 0.91
+    assert detections[0].source_tile_path.endswith("tile_0001.tif")
+    assert runs[0].result_json["raw_detection_count"] == 2
+    assert runs[0].result_json["suppressed_detection_count"] == 1
+    assert runs[0].result_json["duplicate_iou_threshold"] == 0.5
+
+
 def test_yolo_adapter_converts_single_band_tiles_to_rgb_before_prediction(tmp_path: Path) -> None:
     Image = pytest.importorskip("PIL.Image")
     tile_path = tmp_path / "single_band_tile.tif"

deploy/unraid/geointel.env.example

@@ -37,4 +37,5 @@ YOLO_DEVICE=cpu
 YOLO_IMAGE_SIZE=640
 YOLO_MAX_TILES=100
 YOLO_MAX_DETECTIONS=1000
+YOLO_DUPLICATE_IOU_THRESHOLD=0.5
 YOLO_BATCH_SIZE=1

deploy/unraid/run-dockerman-container.sh

@@ -31,6 +31,7 @@ YOLO_DEVICE="${YOLO_DEVICE:-cpu}"
 YOLO_IMAGE_SIZE="${YOLO_IMAGE_SIZE:-640}"
 YOLO_MAX_TILES="${YOLO_MAX_TILES:-100}"
 YOLO_MAX_DETECTIONS="${YOLO_MAX_DETECTIONS:-1000}"
+YOLO_DUPLICATE_IOU_THRESHOLD="${YOLO_DUPLICATE_IOU_THRESHOLD:-0.5}"
 YOLO_BATCH_SIZE="${YOLO_BATCH_SIZE:-1}"
 
 install_dockerman_metadata() {
@@ -92,6 +93,7 @@ docker run -d \
   -e YOLO_IMAGE_SIZE="$YOLO_IMAGE_SIZE" \
   -e YOLO_MAX_TILES="$YOLO_MAX_TILES" \
   -e YOLO_MAX_DETECTIONS="$YOLO_MAX_DETECTIONS" \
+  -e YOLO_DUPLICATE_IOU_THRESHOLD="$YOLO_DUPLICATE_IOU_THRESHOLD" \
   -e YOLO_BATCH_SIZE="$YOLO_BATCH_SIZE" \
   -v "${GEOINTEL_POSTGIS_DATA_PATH}:/var/lib/postgresql/data" \
   -v "${GEOINTEL_STORAGE_PATH}:/app/storage" \

docker-compose.unraid.yml

@@ -29,6 +29,7 @@ services:
       YOLO_IMAGE_SIZE: ${YOLO_IMAGE_SIZE:-640}
       YOLO_MAX_TILES: ${YOLO_MAX_TILES:-100}
       YOLO_MAX_DETECTIONS: ${YOLO_MAX_DETECTIONS:-1000}
+      YOLO_DUPLICATE_IOU_THRESHOLD: ${YOLO_DUPLICATE_IOU_THRESHOLD:-0.5}
       YOLO_BATCH_SIZE: ${YOLO_BATCH_SIZE:-1}
     ports:
       - "${GEOINTEL_FRONTEND_PORT:-1202}:80"

docker-compose.yml

@@ -34,6 +34,7 @@ services:
       YOLO_IMAGE_SIZE: ${YOLO_IMAGE_SIZE:-640}
       YOLO_MAX_TILES: ${YOLO_MAX_TILES:-100}
       YOLO_MAX_DETECTIONS: ${YOLO_MAX_DETECTIONS:-1000}
+      YOLO_DUPLICATE_IOU_THRESHOLD: ${YOLO_DUPLICATE_IOU_THRESHOLD:-0.5}
       YOLO_BATCH_SIZE: ${YOLO_BATCH_SIZE:-1}
     ports:
       - "${GEOINTEL_BACKEND_PORT:-8000}:8000"

docs/AI_PIPELINES.md

@@ -110,6 +110,7 @@ Environment variables:
 - `YOLO_IMAGE_SIZE`
 - `YOLO_MAX_TILES`
 - `YOLO_MAX_DETECTIONS`
+- `YOLO_DUPLICATE_IOU_THRESHOLD`
 - `YOLO_BATCH_SIZE`
 
 `YOLO_MAX_DETECTIONS` is forwarded to Ultralytics as `max_det` for each
@@ -119,6 +120,15 @@ the upstream default would cap recall before QA/QC begins. Operators may lower
 the value for small rasters or raise it for dense urban tiles after reviewing
 runtime and false-positive behavior.
 
+After YOLO boxes are georeferenced, configured-YOLO runs apply a GeoIntel
+cross-tile duplicate suppression pass before persistence. Candidates are grouped
+by canonical class and sorted by confidence; lower-confidence same-class
+candidates with EPSG:4326 geometry IoU greater than or equal to
+`YOLO_DUPLICATE_IOU_THRESHOLD` are suppressed. The default is `0.5`; set it to
+`0` to disable this post-processing for operator debugging. Run summaries record
+raw, persisted and suppressed detection counts so calibration evidence remains
+auditable.
+
 ### Local model asset catalog
 
 GeoIntel can list local runtime model files mounted into the backend model
@@ -205,6 +215,9 @@ persisted project quality-check list to build `calibration_summary.json`.
 Results are honest QA/QC evidence from persisted detections and persisted
 reference `vector_features`; no demo detections, live provider fetches or model
 downloads are introduced by the calibration tool.
+Summaries include raw detection candidate count, persisted detection count and
+suppressed duplicate count so operators can distinguish model output volume from
+GeoIntel post-processing.
 
 For model/tile/threshold selection, use the quality matrix wrapper:
 

docs/API_CONTRACTS.md

@@ -785,6 +785,12 @@ Validation errors:
 - Configured YOLO inference forwards `YOLO_MAX_DETECTIONS` to Ultralytics
   `max_det` and defaults to `1000` so dense building AOIs are not silently
   limited by the upstream default of 300 detections before persisted QA/QC.
+- Configured YOLO applies cross-tile duplicate suppression after pixel boxes are
+  converted to EPSG:4326 geometries and before `Detection` rows are persisted.
+  Same-class candidates are confidence-sorted and lower-confidence candidates
+  with geometry IoU greater than or equal to
+  `YOLO_DUPLICATE_IOU_THRESHOLD` are suppressed. The default is `0.5`; `0`
+  disables this GeoIntel-side post-processing for debugging.
 - `DETECTION_DEPENDENCY_UNAVAILABLE` when YOLO dependencies are not installed.
 - `DETECTION_MODEL_LOAD_FAILED` when the local model file exists but cannot be loaded.
 

docs/CODEX_EXECUTION_LOG.md

@@ -1,3 +1,35 @@
+## Sprint 149 YOLO duplicate suppression evidence (2026-07-09)
+
+Changed:
+- Added configured-YOLO cross-tile duplicate suppression after pixel boxes are converted to EPSG:4326 geometries and before `Detection` rows are persisted.
+- Added backend setting `YOLO_DUPLICATE_IOU_THRESHOLD` with default `0.5`; `0` disables the GeoIntel-side pass for debugging.
+- Detection run `result_json` now records:
+  - `raw_detection_count`
+  - `suppressed_detection_count`
+  - `duplicate_iou_threshold`
+- Updated `.env.example`, Docker Compose, Unraid env examples and the Dockerman run script.
+- Updated calibration and quality matrix scripts to fetch detection run details and include raw/suppressed counts in per-run and aggregate summaries.
+- Updated backend/API/AI/pipeline documentation.
+
+Why:
+- Dense overlapping tile inference can produce duplicate candidate buildings, which inflates persisted false positives before QA/QC.
+- The previous Sprint 148 cap fix allowed dense AOIs to persist more candidates, but made duplicate pressure more visible.
+- This pass keeps all outputs honest: no model activation, no fake detections and no migration. It only removes lower-confidence same-class geometric duplicates before persistence.
+
+Tested:
+- Red step: `python -m pytest backend\tests\test_sprint8b_yolo_foundation.py::test_yolo_run_suppresses_cross_tile_duplicate_detections -q` failed with `detection_count == 2`.
+- `python -m pytest backend\tests\test_sprint8b_yolo_foundation.py::test_yolo_run_suppresses_cross_tile_duplicate_detections -q` (`1 passed`)
+- Red step: Docker runtime config tests failed before `.env.example` and Unraid runner exposed `YOLO_DUPLICATE_IOU_THRESHOLD`.
+- `python -m pytest backend\tests\test_sprint8b_yolo_foundation.py backend\tests\test_docker_runtime_config.py::test_env_example_uses_runtime_env_names_read_by_backend_and_frontend backend\tests\test_docker_runtime_config.py::test_unraid_deploy_passes_ai_build_arg_and_yolo_runtime_env -q` (`17 passed`)
+- Red step: calibration/matrix script tests failed before detection-run raw/suppressed metadata was included.
+- `python -m pytest backend\tests\test_sprint124_detection_calibration_sweep.py backend\tests\test_sprint126_detection_quality_matrix.py backend\tests\test_sprint127_operator_sample_quality_matrix.py::test_multi_sample_detection_quality_matrix_runs_existing_matrix_for_each_sample -q` (`3 passed`)
+- `bash -n scripts/run_detection_calibration_sweep.sh`
+- `bash -n scripts/run_detection_quality_matrix.sh`
+- `bash -n scripts/run_multi_sample_detection_quality_matrix.sh`
+
+Next:
+- Run full readiness, then deploy Tower and rerun the dense Westerlo/Turnhout sweeps with duplicate suppression enabled to quantify quality impact versus the Sprint 148 uncapped baseline.
+
 ## Sprint 148 YOLO max-detection cap hardening (2026-07-09)
 
 Changed:

docs/DETECTION_PIPELINE_SPEC.md

@@ -110,6 +110,9 @@ Default method:
 - calculate IoU between overlapping geospatial bboxes
 - apply non-maximum suppression by confidence
 - default IoU merge threshold: 0.5
+- implemented for configured-YOLO as EPSG:4326 cross-tile duplicate suppression
+  before `Detection` persistence; `YOLO_DUPLICATE_IOU_THRESHOLD=0` disables the
+  GeoIntel-side pass for debugging.
 
 ## Step 6 — Storage
 

docs/ENVIRONMENT_SPEC.md

@@ -22,6 +22,7 @@ YOLO_MODEL_PATH=
 YOLO_MODEL_VERSION=
 YOLO_MAX_TILES=100
 YOLO_MAX_DETECTIONS=1000
+YOLO_DUPLICATE_IOU_THRESHOLD=0.5
 ENABLE_GRB_WFS=false
 GRB_WFS_URL=
 OSM_OVERPASS_URL=https://overpass-api.de/api/interpreter

docs/TODO.md

@@ -112,10 +112,11 @@ This file now starts with the current implementation status. Older preparation/b
 - [x] Train and gate an AOI-scale `aoi512e80` YOLOv8s candidate to test the 160px training-scale hypothesis.
 - [x] Raise configured-YOLO `max_det` through `YOLO_MAX_DETECTIONS` so dense AOIs are not capped at 300 detections before QA/QC.
 - [x] Rerun live dense-AOI calibration after redeploy with `YOLO_MAX_DETECTIONS=1000`; Westerlo reached 523/1000 detections at lower thresholds and Turnhout reached 822/1000, confirming the old 300 cap is removed.
+- [x] Add configured-YOLO cross-tile duplicate suppression and raw/suppressed calibration evidence fields.
 - [ ] Find or train a materially stronger aerial/Kempen building model candidate; `geointel-building-yolov8n-expanded160e50-pt` is the best current dense-AOI candidate but still too weak and too noisy for a V1 default.
 - [ ] Train a higher-capacity local aerial-building detector with stronger positive recall while preserving the hard-negative false-positive gate.
 - [ ] Add more diverse positive AOIs and revisit geometry-to-box label strategy before the next default-model training attempt.
-- [ ] Add operator-side duplicate suppression/post-processing analysis for dense overlapping tile detections before the next promotion gate.
+- [ ] Rerun live dense-AOI calibration after redeploy with `YOLO_DUPLICATE_IOU_THRESHOLD=0.5` to measure post-processing impact versus the Sprint 148 uncapped baseline.
 
 ## Sprint 8 status
 

scripts/README.md

@@ -226,6 +226,9 @@ logs plus `calibration_summary.json` under
 `CALIBRATION_OUTPUT_DIR` is set. This is a calibration/benchmarking tool only:
 it does not seed demo data, enable fixture detections, fetch external data or
 download model weights.
+Per-threshold summaries include persisted detection count, raw candidate count
+before GeoIntel duplicate suppression, suppressed duplicate count and the
+configured duplicate IoU threshold.
 
 Run a broader model/tile/threshold quality matrix when multiple local model
 assets or tile settings need to be compared:

scripts/run_detection_calibration_sweep.sh

@@ -98,6 +98,7 @@ for threshold in ${thresholds_normalized}; do
   threshold_label="$(printf '%s' "${threshold}" | tr '.-' 'pm')"
   run_log="${CALIBRATION_OUTPUT_DIR}/threshold_${threshold_label}.log"
   quality_response="${CALIBRATION_OUTPUT_DIR}/threshold_${threshold_label}_quality_checks.json"
+  detection_run_response="${CALIBRATION_OUTPUT_DIR}/threshold_${threshold_label}_detection_run.json"
   run_summary="${CALIBRATION_OUTPUT_DIR}/threshold_${threshold_label}_summary.json"
 
   echo "-- Threshold ${threshold} (${run_index}) --"
@@ -121,9 +122,11 @@ for threshold in ${thresholds_normalized}; do
   fi
 
   curl -fsS "${BASE_URL%/}/api/v1/projects/${project_id}/quality-checks?limit=200" > "${quality_response}"
+  curl -fsS "${BASE_URL%/}/api/v1/detection/runs/${analysis_run_id}" > "${detection_run_response}"
 
   "${PYTHON_BIN}" - \
     "${quality_response}" \
+    "${detection_run_response}" \
     "${run_summary}" \
     "${threshold}" \
     "${project_id}" \
@@ -134,11 +137,17 @@ for threshold in ${thresholds_normalized}; do
 import json
 import sys
 
-quality_path, output_path, threshold, project_id, analysis_run_id, quality_check_id, detection_count, run_log = sys.argv[1:9]
+quality_path, detection_run_path, output_path, threshold, project_id, analysis_run_id, quality_check_id, detection_count, run_log = sys.argv[1:10]
 with open(quality_path, "r", encoding="utf-8") as handle:
     payload = json.load(handle)
 if "data" not in payload:
     raise SystemExit("Quality-check list is not a canonical GeoIntel data envelope")
+with open(detection_run_path, "r", encoding="utf-8") as handle:
+    detection_run_payload = json.load(handle)
+if "data" not in detection_run_payload:
+    raise SystemExit("Detection run detail is not a canonical GeoIntel data envelope")
+detection_run = detection_run_payload["data"]
+run_result = detection_run.get("result_json") or {}
 items = payload["data"].get("items") or []
 quality_check = next((item for item in items if str(item.get("id")) == quality_check_id), None)
 if quality_check is None:
@@ -157,6 +166,9 @@ summary = {
     "detection_count": int(detection_count),
     "quality_status": quality_check.get("status"),
     "quality_score": quality_check.get("score"),
+    "raw_detection_count": run_result.get("raw_detection_count", int(detection_count)),
+    "suppressed_detection_count": run_result.get("suppressed_detection_count", 0),
+    "duplicate_iou_threshold": run_result.get("duplicate_iou_threshold"),
     "precision": metrics.get("precision"),
     "recall": metrics.get("recall"),
     "f1_score": metrics.get("f1_score", metrics.get("f1")),
@@ -169,10 +181,12 @@ summary = {
 with open(output_path, "w", encoding="utf-8") as handle:
     json.dump(summary, handle, indent=2, sort_keys=True)
 print(
-    "threshold={threshold} detections={detections} score={score} "
+    "threshold={threshold} detections={detections} raw={raw} suppressed={suppressed} score={score} "
     "precision={precision} recall={recall} f1={f1} matches={matches} fp={fp} fn={fn}".format(
         threshold=summary["threshold"],
         detections=summary["detection_count"],
+        raw=summary["raw_detection_count"],
+        suppressed=summary["suppressed_detection_count"],
         score=summary["quality_score"],
         precision=summary["precision"],
         recall=summary["recall"],
@@ -217,10 +231,10 @@ with open(summary_path, "w", encoding="utf-8") as handle:
 
 print("")
 print("Detection calibration summary")
-print("threshold\tdetections\tscore\tprecision\trecall\tf1\tmatches\tfp\tfn")
+print("threshold\tdetections\traw\tsuppressed\tscore\tprecision\trecall\tf1\tmatches\tfp\tfn")
 for item in items:
     print(
-        "{threshold:.2f}\t{detection_count}\t{quality_score}\t{precision}\t{recall}\t{f1_score}\t{matches}\t{false_positives}\t{false_negatives}".format(
+        "{threshold:.2f}\t{detection_count}\t{raw_detection_count}\t{suppressed_detection_count}\t{quality_score}\t{precision}\t{recall}\t{f1_score}\t{matches}\t{false_positives}\t{false_negatives}".format(
             **item
         )
     )

scripts/run_detection_quality_matrix.sh

@@ -168,6 +168,7 @@ while IFS=$'\t' read -r model_request tile_size tile_overlap threshold run_label
   run_index=$((run_index + 1))
   run_log="${QUALITY_OUTPUT_DIR}/${run_label}.log"
   quality_response="${QUALITY_OUTPUT_DIR}/${run_label}_quality_checks.json"
+  detection_run_response="${QUALITY_OUTPUT_DIR}/${run_label}_detection_run.json"
   run_summary="${QUALITY_OUTPUT_DIR}/${run_label}_summary.json"
   model_env="${model_request}"
   if [ "${model_request}" = "__active__" ]; then
@@ -203,9 +204,11 @@ while IFS=$'\t' read -r model_request tile_size tile_overlap threshold run_label
   fi
 
   curl -fsS "${BASE_URL%/}/api/v1/projects/${project_id}/quality-checks?limit=200" > "${quality_response}"
+  curl -fsS "${BASE_URL%/}/api/v1/detection/runs/${analysis_run_id}" > "${detection_run_response}"
 
   "${PYTHON_BIN}" - \
     "${quality_response}" \
+    "${detection_run_response}" \
     "${run_summary}" \
     "${model_request}" \
     "${selected_model_asset_id}" \
@@ -226,6 +229,7 @@ import sys
 
 (
     quality_path,
+    detection_run_path,
     output_path,
     model_request,
     selected_model_asset_id,
@@ -241,12 +245,18 @@ import sys
     detection_count,
     export_id,
     run_log,
-) = sys.argv[1:17]
+) = sys.argv[1:18]
 
 with open(quality_path, "r", encoding="utf-8") as handle:
     payload = json.load(handle)
 if "data" not in payload:
     raise SystemExit("Quality-check list is not a canonical GeoIntel data envelope")
+with open(detection_run_path, "r", encoding="utf-8") as handle:
+    detection_run_payload = json.load(handle)
+if "data" not in detection_run_payload:
+    raise SystemExit("Detection run detail is not a canonical GeoIntel data envelope")
+detection_run = detection_run_payload["data"]
+run_result = detection_run.get("result_json") or {}
 items = payload["data"].get("items") or []
 quality_check = next((item for item in items if str(item.get("id")) == quality_check_id), None)
 if quality_check is None:
@@ -270,6 +280,9 @@ summary = {
     "analysis_run_id": analysis_run_id,
     "quality_check_id": quality_check_id,
     "detection_count": int(detection_count),
+    "raw_detection_count": run_result.get("raw_detection_count", int(detection_count)),
+    "suppressed_detection_count": run_result.get("suppressed_detection_count", 0),
+    "duplicate_iou_threshold": run_result.get("duplicate_iou_threshold"),
     "quality_status": quality_check.get("status"),
     "quality_score": quality_check.get("score"),
     "precision": metrics.get("precision"),
@@ -285,13 +298,15 @@ summary = {
 with open(output_path, "w", encoding="utf-8") as handle:
     json.dump(summary, handle, indent=2, sort_keys=True)
 print(
-    "model={model} tile={tile} overlap={overlap} threshold={threshold} detections={detections} "
+    "model={model} tile={tile} overlap={overlap} threshold={threshold} detections={detections} raw={raw} suppressed={suppressed} "
     "score={score} precision={precision} recall={recall} f1={f1} matches={matches} fp={fp} fn={fn}".format(
         model=summary["model_asset_id"],
         tile=summary["tile_size"],
         overlap=summary["tile_overlap"],
         threshold=summary["threshold"],
         detections=summary["detection_count"],
+        raw=summary["raw_detection_count"],
+        suppressed=summary["suppressed_detection_count"],
         score=summary["quality_score"],
         precision=summary["precision"],
         recall=summary["recall"],
@@ -346,10 +361,10 @@ with open(summary_path, "w", encoding="utf-8") as handle:
 
 print("")
 print("Detection quality matrix summary")
-print("model\ttile\toverlap\tthreshold\tdetections\tscore\tprecision\trecall\tf1\tmatches\tfp\tfn")
+print("model\ttile\toverlap\tthreshold\tdetections\traw\tsuppressed\tscore\tprecision\trecall\tf1\tmatches\tfp\tfn")
 for item in items:
     print(
-        "{model_asset_id}\t{tile_size}\t{tile_overlap}\t{threshold:.2f}\t{detection_count}\t{quality_score}\t{precision}\t{recall}\t{f1_score}\t{matches}\t{false_positives}\t{false_negatives}".format(
+        "{model_asset_id}\t{tile_size}\t{tile_overlap}\t{threshold:.2f}\t{detection_count}\t{raw_detection_count}\t{suppressed_detection_count}\t{quality_score}\t{precision}\t{recall}\t{f1_score}\t{matches}\t{false_positives}\t{false_negatives}".format(
             **item
         )
     )

scripts/run_multi_sample_detection_quality_matrix.sh

@@ -205,10 +205,10 @@ summary_path.write_text(json.dumps(summary, indent=2, sort_keys=True), encoding=
 
 print("")
 print("Multi-sample detection quality summary")
-print("sample\tmodel\ttile\toverlap\tthreshold\tdetections\tscore\tprecision\trecall\tf1\tmatches\tfp\tfn")
+print("sample\tmodel\ttile\toverlap\tthreshold\tdetections\traw\tsuppressed\tscore\tprecision\trecall\tf1\tmatches\tfp\tfn")
 for item in flat_items:
     print(
-        "{sample_slug}\t{model_asset_id}\t{tile_size}\t{tile_overlap}\t{threshold:.2f}\t{detection_count}\t{quality_score}\t{precision}\t{recall}\t{f1_score}\t{matches}\t{false_positives}\t{false_negatives}".format(
+        "{sample_slug}\t{model_asset_id}\t{tile_size}\t{tile_overlap}\t{threshold:.2f}\t{detection_count}\t{raw_detection_count}\t{suppressed_detection_count}\t{quality_score}\t{precision}\t{recall}\t{f1_score}\t{matches}\t{false_positives}\t{false_negatives}".format(
             **item
         )
     )