diff --git a/wsidicom/codec/encoder.py b/wsidicom/codec/encoder.py
index b744d65..deb9d91 100644
--- a/wsidicom/codec/encoder.py
+++ b/wsidicom/codec/encoder.py
@@ -183,12 +183,16 @@ def create(
 
         Parameters
         ----------
-        settings: SettingsType
-            Settings for the encoder.
+        transfer_syntax: UID
+            Transfer syntax UID.
+        bits: int
+            Number of bits per sample.
+        photometric_interpretation: str
+            Photometric interpretation.
 
         Returns
         -------
-        Encoder[SettingsType]
+        Encoder
             Encoder for settings.
         """
         settings = Settings.create(
@@ -199,17 +203,17 @@ def create(
         return cls.create_for_settings(settings)
 
     @classmethod
-    def create_for_settings(cls, settings: SettingsType) -> "Encoder[SettingsType]":
+    def create_for_settings(cls, settings: Settings) -> "Encoder":
         """Create an encoder using settings.
 
         Parameters
         ----------
-        settings: SettingsType
+        settings: Settings
             Settings for the encoder.
 
         Returns
         -------
-        Encoder[SettingsType]
+        Encoder
             Encoder for settings.
         """
         encoder = cls._select_encoder(settings)
@@ -219,18 +223,18 @@ def create_for_settings(cls, settings: SettingsType) -> "Encoder[SettingsType]":
 
     @staticmethod
     def _select_encoder(
-        settings: SettingsType,
-    ) -> Optional["Type[Encoder[SettingsType]]"]:
+        settings: Settings,
+    ) -> Optional["Type[Encoder]"]:
         """Select encoder for settings.
 
         Parameters
         ----------
-        settings: SettingsType
+        settings: Settings
             Settings for the encoder.
 
         Returns
         -------
-        Optional[Type[Encoder[SettingsType]]]
+        Optional[Type[Encoder]]
             Encoder for settings, or None if no encoder is available.
         """
         # Sort encoders by preference
diff --git a/wsidicom/metadata/image.py b/wsidicom/metadata/image.py
index 832c53a..6eeb842 100644
--- a/wsidicom/metadata/image.py
+++ b/wsidicom/metadata/image.py
@@ -69,6 +69,20 @@ def orientation(self) -> Orientation:
         return Orientation.from_rotation(self.rotation)
 
     def image_to_slide(self, image: GeometryType) -> GeometryType:
+        """Translate a geometry (PointMm or RegionMm) from image coordinate system
+        (origin at image top-left corner) to slide coordinate system (origin at
+        slide corner).
+
+        Parameters
+        ----------
+        image : GeometryType
+            The geometry to translate.
+
+        Returns
+        -------
+        GeometryType
+            The translate geometry.
+        """
         if isinstance(image, PointMm):
             offset = self.orientation.apply_transform(image)
             return self.origin + offset
@@ -77,6 +91,20 @@ def image_to_slide(self, image: GeometryType) -> GeometryType:
         return RegionMm(start, SizeMm(end.x - start.x, end.y - start.y))
 
     def slide_to_image(self, slide: GeometryType) -> GeometryType:
+        """Translate a geometry (PointMm or RegionMm) from slide coordinate system
+        (origin at slide corner) to image coordinate system (origin at image top-left
+        corner).
+
+        Parameters
+        ----------
+        slide : GeometryType
+            The geometry to translate.
+
+        Returns
+        -------
+        GeometryType
+            The translate geometry.
+        """
         if isinstance(slide, PointMm):
             offset = slide - self.origin
             return self.orientation.apply_reverse_transform(offset)
@@ -89,9 +117,24 @@ def slide_to_image(self, slide: GeometryType) -> GeometryType:
         size = SizeMm(end.x - start.x, end.y - start.y)
         return RegionMm(start, size)
 
-    def to_other_corrdinate_system(
+    def to_other_coordinate_system(
         self, other: "ImageCoordinateSystem", image: GeometryType
     ) -> GeometryType:
+        """Translate a geometry (PointMm or RegionMm) from this image coordinate system
+        to another image coordinate system.
+
+        Parameters
+        ----------
+        other : ImageCoordinateSystem
+            The target image coordinate system.
+        image : GeometryType
+            The geometry to translate.
+
+        Returns
+        -------
+        GeometryType
+            The translate geometry.
+        """
         slide = self.image_to_slide(image)
         return other.slide_to_image(slide)