--- a/rust/integral-geometry/src/lib.rs	Thu Nov 08 11:34:01 2018 -0500
+++ b/rust/integral-geometry/src/lib.rs	Thu Nov 08 22:22:47 2018 +0300
@@ -152,6 +152,11 @@
     }
 
     #[inline]
+    pub fn transpose(&self) -> Self {
+        Self::new(self.height, self.width)
+    }
+
+    #[inline]
     pub fn to_mask(&self) -> SizeMask {
         SizeMask::new(*self)
     }