Fixed return type of getUVImage().

bbiwarg/DataSource/IisuDataSource.cs

@@ -178,7 +178,7 @@ namespace bbiwarg.DataSource
             return new ConfidenceImage(width, height, confidenceData);
         }
 
-        public VertexArray getUVImage()
+        public UVImage getUVImage()
         {
             Iisu.Data.IImageInfos imageInfos = uvImage.Value.ImageInfos;
             int width = (int)imageInfos.Width;