initial structure implemented

docs -> _docs

components/metric_refinement/metric_refinement.py

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+import numpy as np
+
+from .base import MetricRefinementBase
+from models.core import GPSPoint
+from models.processing import AlignmentResult
+
+
+class MetricRefinement(MetricRefinementBase):
+    async def refine_alignment(
+        self,
+        uav_image: np.ndarray,
+        satellite_image: np.ndarray,
+        initial_homography: np.ndarray,
+    ) -> AlignmentResult:
+        raise NotImplementedError
+
+    async def compute_precise_gps(
+        self,
+        uav_center_pixel: tuple[float, float],
+        homography: np.ndarray,
+        tile_bounds: dict,
+    ) -> GPSPoint:
+        raise NotImplementedError
+
+    async def estimate_reprojection_error(
+        self,
+        correspondences: np.ndarray,
+        homography: np.ndarray,
+    ) -> float:
+        raise NotImplementedError
+
+    async def filter_outliers(
+        self,
+        correspondences: np.ndarray,
+        homography: np.ndarray,
+        threshold: float = 3.0,
+    ) -> np.ndarray:
+        raise NotImplementedError
+