BUG: don't copy metadata if the number of bands between source and target has changed

Modules/Core/ImageBase/include/otbImage.hxx

@@ -109,9 +109,20 @@ void Image<TPixel, VImageDimension>::CopyInformation(const itk::DataObject* data
   this->itk::Object::SetMetaDataDictionary(data->GetMetaDataDictionary());
   const ImageCommons* imc = dynamic_cast<const ImageCommons*>(data);
   if (imc != nullptr)
+  {
+    const auto & imd = imc->GetImageMetadata();
+    
+    
+    if (imd.Bands.size() > 1)
+    {
+      SetImageMetadata(ImageMetadata(imd.GeometryKeys, imd.NumericKeys, imd.StringKeys, imd.LUT1DKeys,
+            imd.LUT2DKeys, imd.TimeKeys, imd.ExtraKeys, ImageMetadata::ImageMetadataBandsType(1)));
+    }
+    else
     {
-    SetImageMetadata(imc->GetImageMetadata());
+      SetImageMetadata(imd);
     }
+  }
 }
 
 template <class TPixel, unsigned int                                       VImageDimension>

Modules/Core/ImageBase/include/otbVectorImage.hxx

@@ -110,9 +110,19 @@ void VectorImage<TPixel, VImageDimension>::CopyInformation(const itk::DataObject
   this->itk::Object::SetMetaDataDictionary(data->GetMetaDataDictionary());
   const ImageCommons* imc = dynamic_cast<const ImageCommons*>(data);
   if (imc != nullptr)
+  {
+    const auto & imd = imc->GetImageMetadata();
+    
+    if (imd.Bands.size() > 0 && imd.Bands.size() != this->GetNumberOfComponentsPerPixel())
+    {
+      SetImageMetadata(ImageMetadata(imd.GeometryKeys, imd.NumericKeys, imd.StringKeys, imd.LUT1DKeys,
+                    imd.LUT2DKeys, imd.TimeKeys, imd.ExtraKeys, ImageMetadata::ImageMetadataBandsType(this->GetNumberOfComponentsPerPixel())));
+    }
+    else
     {
-    SetImageMetadata(imc->GetImageMetadata());
+      SetImageMetadata(imd);
     }
+  }
 }
 
 template <class TPixel, unsigned int                VImageDimension>