FIX: Add a 0.5 offset to RPC model for Pleiades

Data/Input/pleiades/maido.geom

@@ -80,7 +80,7 @@ line_num_coeff_16:  4.81457792658454e-05
 line_num_coeff_17:  2.88619029525836e-07
 line_num_coeff_18:  -3.21946619769831e-07
 line_num_coeff_19:  5.19261801580877e-07
-line_off:  3628.5
+line_off:  3628
 line_scale:  3628.5
 ll_lat:  -21.1761546496637
 ll_lon:  55.3361820080128
@@ -141,7 +141,7 @@ samp_num_coeff_16:  -7.36857981217554e-07
 samp_num_coeff_17:  6.99721596099962e-06
 samp_num_coeff_18:  2.68058434585531e-05
 samp_num_coeff_19:  2.22039097455653e-06
-samp_off:  2178
+samp_off:  2177.5
 samp_scale:  5187
 sensor:  PHR 1A
 support_data.across_track_incidence_angle:  """15.5053146594264 15.3626255402908 15.2247250482884 """

Modules/Core/Metadata/include/otbImageMetadataInterfaceBase.h

@@ -245,7 +245,7 @@ public:
 
   const std::string& Fetch(std::string key, const MetadataSupplierInterface & mds, const char *path, int band=-1);
 
-  const boost::any& FetchRPC(const MetadataSupplierInterface & mds);
+  const boost::any& FetchRPC(const MetadataSupplierInterface & mds, const double lineOffset = 0.0, const double sampleOffset = 0.0);
 
   /** Reads into the MetaDataDictionary to find an OSSIM ImageKeywordlist,
    * then translate it into ImageMetadata.

Modules/Core/Metadata/src/otbImageMetadataInterfaceBase.cxx

@@ -689,8 +689,8 @@ ImageMetadataInterfaceBase::Fetch(
   return m_Imd[key];
 }
 
-const boost::any& ImageMetadataInterfaceBase::FetchRPC(
-  const MetadataSupplierInterface & mds)
+const boost::any& ImageMetadataInterfaceBase::FetchRPC(const MetadataSupplierInterface & mds,
+						       const double lineOffset, const double sampleOffset)
 {
   Projection::RPCParam rpcStruct;
 
@@ -723,8 +723,8 @@ const boost::any& ImageMetadataInterfaceBase::FetchRPC(
     }
   };
 
-  rpcStruct.LineOffset    = GetMetadataWithoutUnit("RPC/LINE_OFF", mds);
-  rpcStruct.SampleOffset  = GetMetadataWithoutUnit("RPC/SAMP_OFF", mds);
+  rpcStruct.LineOffset    = GetMetadataWithoutUnit("RPC/LINE_OFF", mds) + lineOffset;
+  rpcStruct.SampleOffset  = GetMetadataWithoutUnit("RPC/SAMP_OFF", mds) + sampleOffset;
   rpcStruct.LatOffset     = GetMetadataWithoutUnit("RPC/LAT_OFF", mds);
   rpcStruct.LonOffset     = GetMetadataWithoutUnit("RPC/LONG_OFF", mds);
   rpcStruct.HeightOffset  = GetMetadataWithoutUnit("RPC/HEIGHT_OFF", mds);

Modules/Core/Metadata/src/otbPleiadesImageMetadataInterface.cxx

@@ -2232,7 +2232,7 @@ void PleiadesImageMetadataInterface::Parse(const MetadataSupplierInterface & mds
     // fill RPC model
     if (m_Imd[MDStr::GeometricLevel] == "SENSOR")
     {
-      FetchRPC(mds);
+      FetchRPC(mds, -0.5, -0.5);
     }
   }
   // Geom case