--- a/Orthanc/Core/Images/ImageProcessing.cpp	Thu Jun 15 17:43:34 2017 +0200
+++ b/Orthanc/Core/Images/ImageProcessing.cpp	Mon Jul 10 11:51:20 2017 +0200
@@ -458,6 +458,26 @@
       return;
     }
 
+    if (target.GetFormat() == PixelFormat_RGB24 &&
+        source.GetFormat() == PixelFormat_BGRA32)
+    {
+      for (unsigned int y = 0; y < source.GetHeight(); y++)
+      {
+        const uint8_t* p = reinterpret_cast<const uint8_t*>(source.GetConstRow(y));
+        uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y));
+        for (unsigned int x = 0; x < source.GetWidth(); x++)
+        {
+          q[0] = p[2];
+          q[1] = p[1];
+          q[2] = p[0];
+          p += 4;
+          q += 3;
+        }
+      }
+
+      return;
+    }
+
     if (target.GetFormat() == PixelFormat_RGBA32 &&
         source.GetFormat() == PixelFormat_RGB24)
     {
@@ -752,4 +772,29 @@
         throw OrthancException(ErrorCode_NotImplemented);
     }
   }
+
+
+  void ImageProcessing::Invert(ImageAccessor& image)
+  {
+    switch (image.GetFormat())
+    {
+      case PixelFormat_Grayscale8:
+      {
+        for (unsigned int y = 0; y < image.GetHeight(); y++)
+        {
+          uint8_t* p = reinterpret_cast<uint8_t*>(image.GetRow(y));
+
+          for (unsigned int x = 0; x < image.GetWidth(); x++, p++)
+          {
+            *p = 255 - (*p);
+          }
+        }
+        
+        return;
+      }
+
+      default:
+        throw OrthancException(ErrorCode_NotImplemented);
+    }   
+  }
 }