Optimize false-negative tile coverage review

scripts/render_detection_false_negative_review_contact_sheets.py

@@ -116,6 +116,8 @@ def load_tiles(
     manifest = load_json(manifest_path)
     rasterio = dependencies["rasterio"]
     box = dependencies["box"]
+    Transformer = dependencies["Transformer"]
+    transform_geometry = dependencies["transform"]
     raw_paths = [
         str(tile.get("path") or "").strip()
         for tile in manifest.get("tiles") or []
@@ -130,11 +132,15 @@ def load_tiles(
         with rasterio.open(tile_path) as source:
             if not source.crs:
                 raise SystemExit(f"Source tile has no CRS: {tile_path}")
+            source_geometry = box(*source.bounds)
+            to_wgs84 = Transformer.from_crs(source.crs, "EPSG:4326", always_xy=True)
             tiles.append(
                 {
                     "path": str(tile_path),
                     "crs": source.crs,
-                    "geometry": box(*source.bounds),
+                    "geometry_wgs84": transform_geometry(
+                        to_wgs84.transform, source_geometry
+                    ),
                 }
             )
     return tiles
@@ -143,21 +149,16 @@ def load_tiles(
 def choose_source_tile(
     geometry: Any,
     tiles: list[dict[str, Any]],
-    dependencies: dict[str, Any],
 ) -> str | None:
-    Transformer = dependencies["Transformer"]
-    transform_geometry = dependencies["transform"]
     candidates: list[tuple[float, float, str]] = []
     for tile in tiles:
-        transformer = Transformer.from_crs("EPSG:4326", tile["crs"], always_xy=True)
-        projected = transform_geometry(transformer.transform, geometry)
-        intersection = projected.intersection(tile["geometry"])
+        intersection = geometry.intersection(tile["geometry_wgs84"])
         if intersection.is_empty:
             continue
         candidates.append(
             (
                 float(intersection.area),
-                -float(projected.centroid.distance(tile["geometry"].centroid)),
+                -float(geometry.centroid.distance(tile["geometry_wgs84"].centroid)),
                 tile["path"],
             )
         )
@@ -264,7 +265,7 @@ def read_population(
                 or feature.get("id")
             )
             area_m2 = abs(float(geod.geometry_area_perimeter(geometry)[0]))
-            source_tile_path = choose_source_tile(geometry, tiles, dependencies)
+            source_tile_path = choose_source_tile(geometry, tiles)
             if source_tile_path is None:
                 outside_tile_coverage.append(
                     {