Reduce bin size for raster window grouping to 0.01 degrees to avoid O…

…OM errors.

PiperOrigin-RevId: 660461366

src/skai/read_raster.py

@@ -40,9 +40,9 @@
 
 # When splitting coordinates into bins for grouping, this is the number of
 # degrees in longitude and latitude each bin spans. Since 1 degree ~ 111km,
-# and we expect image resolutions around 0.5m, this means approximately 22K
-# pixels per bin.
-_BIN_SIZE_DEGREES = 0.1
+# and we expect image resolutions around 0.5m, this means each bin will be
+# approximately 2220 x 2220 pixels.
+_BIN_SIZE_DEGREES = 0.01
 
 
 @dataclasses.dataclass(order=True, frozen=True)

src/skai/read_raster_test.py

@@ -122,7 +122,7 @@ def test_get_windows(self):
       def _check_windows(windows):
         self.assertLen(windows, 2)
         for key, window in windows:
-          self.assertEqual(key, _RasterBin(self.test_image_path, 1784, -167))
+          self.assertEqual(key, _RasterBin(self.test_image_path, 17848, -1664))
           self.assertEqual(window.source_crs, rasterio.crs.CRS.from_epsg(3857))
           self.assertEqual(window.target_crs, rasterio.crs.CRS.from_epsg(32760))
           if window.window_id == 'A17B32432A1085C1':