Esempio n. 1
0
bool ossimGmlSupportData::getImageGeometry( ossimKeywordlist& geomKwl ) const
{
   bool success = true;
   
   if ( m_xmlDocument.valid() )
   {
      vector< ossimRefPtr<ossimXmlNode> > xml_nodes;
      bool gotSensorImage    = false;
      bool gotRectifiedImage = false;
      ossim_uint32 pcsCodeGrid = 32767; // only applies to rectified

      // Check the GMLJP2CoverageCollection attributes for the default namespace.
      ossimString defaultNamespaceStr( "" );
      ossimString xpath_root = "/gmljp2:GMLJP2CoverageCollection";
      xml_nodes.clear();
      m_xmlDocument->findNodes( xpath_root, xml_nodes );
      if ( xml_nodes.size() == 0 ) 
      {
          // check if the default namespace is gmljp2
          xpath_root = "/GMLJP2CoverageCollection";
          m_xmlDocument->findNodes( xpath_root, xml_nodes );
      }
      if ( xml_nodes.size() >= 1 )
      {
         const ossimString defaultNamespaceIdentifierStr( "xmlns" );
         ossimString defaultNamespacePrependStr = defaultNamespaceIdentifierStr + ":";

         const ossimRefPtr<ossimXmlAttribute> defaultNamespaceAttribute = xml_nodes[0]->findAttribute( defaultNamespaceIdentifierStr );
         ossimString defaultNamespaceSettingStr = defaultNamespaceAttribute->getValue();

         // search for the attribute value in the other attributes
         const ossimXmlNode::AttributeListType& attributeList = xml_nodes[0]->getAttributes();
         size_t nAttributes = attributeList.size();
         for ( size_t i=0; i<nAttributes; ++i )
         {
            const ossimRefPtr<ossimXmlAttribute> attribute = attributeList[i];
         
            const ossimString& attribute_name  = attribute->getName();
            const ossimString& attribute_value = attribute->getValue();

            if ( attribute_name  != defaultNamespaceIdentifierStr && 
                 attribute_value == defaultNamespaceSettingStr )
            {
                defaultNamespaceStr = attribute_name.after( defaultNamespacePrependStr );
                defaultNamespaceStr += ":";
            }
         }
      }
       
      // Check for a sensor image
      ossimString xpath0 = "/gmljp2:GMLJP2CoverageCollection/gmljp2:featureMember/gmljp2:GMLJP2ReferenceableGridCoverage/gml:domainSet/gmlcov:ReferenceableGridBySensorModel";
      xpath0 = xpath0.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );
      xml_nodes.clear();
      m_xmlDocument->findNodes( xpath0, xml_nodes );
      if ( xml_nodes.size() >= 1 )
      {
         // we've got a sensor model image
         gotSensorImage = true;
      }
      else
      {
         const ossimString srsNameStr( "srsName" );
         ossimString pcsCodeDefinitionStr( "http://www.opengis.net/def/crs/EPSG/0/" );

         xpath0 = "/gmljp2:GMLJP2CoverageCollection/gmljp2:featureMember/gmljp2:GMLJP2RectifiedGridCoverage/gml:domainSet/gml:RectifiedGrid";
         xpath0 = xpath0.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );
         xml_nodes.clear();
         m_xmlDocument->findNodes( xpath0, xml_nodes );
         if ( xml_nodes.size() >= 1 )
         {
            // we've got a rectified image
            gotRectifiedImage = true;

            const ossimRefPtr<ossimXmlAttribute> hrefAttribute = xml_nodes[0]->findAttribute( srsNameStr );
            const ossimString& originSrsName = hrefAttribute->getValue();
            ossimString pcsCodeGridStr = originSrsName.after( pcsCodeDefinitionStr.string() );
            pcsCodeGrid = pcsCodeGridStr.toUInt32();
            if ( pcsCodeGrid != 32767 )
            {
               //---
               // The ossimEpsgProjectionFactory will not pick up the origin latitude if code is
               // 4326 (geographic) so we use the projection name; else, the origin_latitude will
               // always be 0.  This is so the gsd comes out correct for scale.
               //---
               if ( pcsCodeGrid != 4326 ) // map projection
               {
                  // Add the pcs code.
                  geomKwl.add( ossimKeywordNames::PCS_CODE_KW,
                               pcsCodeGridStr.c_str() );
               }
               else // geographic
               {
                  geomKwl.add( ossimKeywordNames::TYPE_KW, 
                               ossimString( "ossimEquDistCylProjection" ) );
               }
            }
         }
      }

      /* Number of lines & samples, for either sensor or rectified imagery */

      ossimString xpath_limits_low  = "/gml:limits/gml:GridEnvelope/gml:low";
      ossimString xpath_limits_high = "/gml:limits/gml:GridEnvelope/gml:high";

      xpath_limits_low  = xpath_limits_low.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );
      xpath_limits_high = xpath_limits_high.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );

      bool gotLow = false;
      ossim_int32 lowX, lowY;
      ossimString xpath = xpath0 + xpath_limits_low;
      xml_nodes.clear();
      m_xmlDocument->findNodes( xpath, xml_nodes );
      if ( xml_nodes.size() == 1 )
      {
         const ossimString& lowerCorner = xml_nodes[0]->getText();
         size_t spacePos = lowerCorner.find( ' ' );
         ossimString lowerXString = lowerCorner.beforePos( spacePos );
         ossimString lowerYString = lowerCorner.afterPos ( spacePos );
         lowX = lowerXString.toInt32();
         lowY = lowerYString.toInt32();
         gotLow = true;
      }

      bool gotHigh = false;
      ossim_int32 highX = 0;
      ossim_int32 highY = 0;
      xpath = xpath0 + xpath_limits_high;
      xml_nodes.clear();
      m_xmlDocument->findNodes( xpath, xml_nodes );
      if ( xml_nodes.size() == 1 )
      {
         const ossimString& higherCorner = xml_nodes[0]->getText();
         size_t spacePos = higherCorner.find( ' ' );
         ossimString higherXString = higherCorner.beforePos( spacePos );
         ossimString higherYString = higherCorner.afterPos ( spacePos );
         highX = higherXString.toInt32();
         highY = higherYString.toInt32();
         gotHigh = true;
      }

      if ( gotHigh && gotLow )
      {
         geomKwl.add( ossimKeywordNames::NUMBER_LINES_KW,   highY - lowY + 1 );
         geomKwl.add( ossimKeywordNames::NUMBER_SAMPLES_KW, highX - lowX + 1 );
      }

      if ( gotSensorImage )
      {
         const ossimString hrefStr( "xlink:href" );
         const ossimString codeSpaceStr( "codeSpace" );

         ossimString sensorModelHref( "" );
         ossimString xpath_sensor_model = "/gmlcov:sensorModel";
         xpath_sensor_model = xpath_sensor_model.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );
         xpath = xpath0 + xpath_sensor_model;
         xml_nodes.clear();
         m_xmlDocument->findNodes( xpath, xml_nodes );
         if ( xml_nodes.size() == 1 )
         {
            const ossimRefPtr<ossimXmlAttribute> hrefAttribute = xml_nodes[0]->findAttribute( hrefStr );
            sensorModelHref = hrefAttribute->getValue();
         }

         ossimString sensorInstanceHref( "" );
         ossimString xpath_sensor_typeOf = "/gmlcov:sensorInstance/sml:SimpleProcess/sml:typeOf";
         xpath_sensor_typeOf = xpath_sensor_typeOf.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );
         xpath = xpath0 + xpath_sensor_typeOf;
         xml_nodes.clear();
         m_xmlDocument->findNodes( xpath, xml_nodes );
         if ( xml_nodes.size() == 1 )
         {
            const ossimRefPtr<ossimXmlAttribute> hrefAttribute = xml_nodes[0]->findAttribute( hrefStr );
            sensorInstanceHref = hrefAttribute->getValue();
         }

         ossimSensorModel* sensor_model = 0;
         ossimString xpath_sensor_name = "/gmlcov:sensorInstance/sml:SimpleProcess/gml:name";
         xpath_sensor_name = xpath_sensor_name.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );
         xpath = xpath0 + xpath_sensor_name;
         xml_nodes.clear();
         m_xmlDocument->findNodes( xpath, xml_nodes );
         int nSensorNames = (int)xml_nodes.size();
         for ( int i=0; i<nSensorNames; ++i )
         {
            const ossimString& sensorName = xml_nodes[i]->getText();

            ossimProjectionFactoryRegistry* registry = ossimProjectionFactoryRegistry::instance();
            ossimProjection* proj = registry->createProjection( sensorName );

            // Is it a sensor model ?
            sensor_model = dynamic_cast<ossimSensorModel*>( proj );
            if ( sensor_model != 0 )
            {
               geomKwl.add( ossimKeywordNames::TYPE_KW, sensorName.c_str() );
               break;
            }
         }
         if ( sensor_model == 0 )
         {
            // Add debug message
            return false;
         }

         // Check if the sensor instance is typeOf the sensor model
         if ( sensorModelHref == sensorInstanceHref )
         {
            const ossimString refStr( "ref" );

            /* sml:setValue */
            ossimString xpath_setValue = "/gmlcov:sensorInstance/sml:SimpleProcess/sml:configuration/sml:Settings/sml:setValue";
            xpath_setValue = xpath_setValue.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );
            xpath = xpath0 + xpath_setValue;
            xml_nodes.clear();
            m_xmlDocument->findNodes( xpath, xml_nodes );
            size_t nXmlNodes = xml_nodes.size();
            for( size_t i=0; i<nXmlNodes; ++i )
            {
               const ossimString& elementValue = xml_nodes[i]->getText();

               const ossimRefPtr<ossimXmlAttribute> refAttribute = xml_nodes[i]->findAttribute( refStr );
               const ossimString& settingsRef = refAttribute->getValue();

               bool successSetValue = sensor_model->getImageGeometry( settingsRef, elementValue, geomKwl );
               success &= successSetValue;
               if ( !successSetValue )
               {
                  // Add debug message
               }
            }

            /* sml:setArrayValues */
            ossimString xpath_setArrayValues = "/gmlcov:sensorInstance/sml:SimpleProcess/sml:configuration/sml:Settings/sml:setArrayValues";
            xpath_setArrayValues = xpath_setArrayValues.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );
            xpath = xpath0 + xpath_setArrayValues;
            xml_nodes.clear();
            m_xmlDocument->findNodes( xpath, xml_nodes );
            nXmlNodes = xml_nodes.size();
            for( size_t i=0; i<nXmlNodes; ++i )
            {
               ossimString elementValue( "" );

               const ossimRefPtr<ossimXmlAttribute> refAttribute = xml_nodes[i]->findAttribute( refStr );
               const ossimString& settingsRef = refAttribute->getValue();

               const ossimXmlNode::ChildListType& children = xml_nodes[i]->getChildNodes();
               if ( children.size() > 0 )
               {
                  const ossimXmlNode::ChildListType& grandchildren = children[0]->getChildNodes();
                   
                  if ( (grandchildren.size() > 1) && (grandchildren[1]->getTag() == ossimString( "sml:value")) )
                  {
                     elementValue = grandchildren[1]->getText();
                  }
               }

               bool successSetArrayValues = sensor_model->getImageGeometry( settingsRef, elementValue, geomKwl );
               success &= successSetArrayValues;
               if ( !successSetArrayValues )
               {
                  // Add debug message
               }
            }
         }
      }
      else
         if ( gotRectifiedImage )
         {
            const ossimString srsNameStr( "srsName" );
            ossimString pcsCodeDefinitionStr( "http://www.opengis.net/def/crs/EPSG/0/" );

            /* axis labels for rectified imagery */

            ossimString xpath_axisLabels = "/gml:axisLabels";
            xpath_axisLabels = xpath_axisLabels.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );
            ossimString firstAxisLabelString( "" );
            ossimString secondAxisLabelString( "" );
            ossimString xpath = xpath0 + xpath_axisLabels;
            xml_nodes.clear();
            m_xmlDocument->findNodes( xpath, xml_nodes );
            if ( xml_nodes.size() == 1 )
            {
               const ossimString& axisLabelsString = xml_nodes[0]->getText();
               size_t spacePos = axisLabelsString.find( ' ' );
               firstAxisLabelString  = axisLabelsString.beforePos( spacePos );
               secondAxisLabelString = axisLabelsString.afterPos ( spacePos );
            }

            /* origin */

            ossim_uint32 pcsCodeOrigin = 32767;
            ossimString xpath_originPoint = "/gml:origin/gml:Point";
            xpath_originPoint = xpath_originPoint.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );
            xpath = xpath0 + xpath_originPoint;
            xml_nodes.clear();
            m_xmlDocument->findNodes( xpath, xml_nodes );
            if ( xml_nodes.size() == 1 )
            {
               const ossimString& originString = xml_nodes[0]->getChildTextValue( ossimString( "pos" ) );
               size_t spacePos = originString.find( ' ' );
               ossimString firstOriginString  = originString.beforePos( spacePos );
               ossimString secondOriginString = originString.afterPos ( spacePos );

               const ossimRefPtr<ossimXmlAttribute> hrefAttribute = xml_nodes[0]->findAttribute( srsNameStr );
               const ossimString& originSrsName = hrefAttribute->getValue();
               ossimString pcsCodeOriginStr = originSrsName.after( pcsCodeDefinitionStr.string() );
               pcsCodeOrigin = pcsCodeOriginStr.toUInt32();
               if ( pcsCodeOrigin != 32767 )
               {
                  if ( pcsCodeOrigin != 4326 ) // map projection
                  {
                     /* Convert to geographic */
                  }

                  if ( firstAxisLabelString == ossimString( "Lat" ) )
                  {
                     geomKwl.add( ossimKeywordNames::ORIGIN_LATITUDE_KW, 
                                  firstOriginString.c_str() );
                     geomKwl.add( ossimKeywordNames::CENTRAL_MERIDIAN_KW, 
                                  secondOriginString.c_str() );
                  }
                  else
                  {
                     geomKwl.add( ossimKeywordNames::ORIGIN_LATITUDE_KW, 
                                  secondOriginString.c_str() );
                     geomKwl.add( ossimKeywordNames::CENTRAL_MERIDIAN_KW, 
                                  firstOriginString.c_str() );
                  }
               }
            }

            /* offset vector */

            ossimString xpath_offsetVector = "/gml:offsetVector";
            xpath_offsetVector = xpath_offsetVector.replaceAllThatMatch( defaultNamespaceStr.c_str(), "" );
            xpath = xpath0 + xpath_offsetVector;
            xml_nodes.clear();
            m_xmlDocument->findNodes( xpath, xml_nodes );
            size_t nNodes = xml_nodes.size();
            for ( size_t i=0; i<nNodes; ++i )
            {
               const ossimString& offsetVectorString = xml_nodes[i]->getText();
               size_t spacePos = offsetVectorString.find( ' ' );
               ossimString firstOffsetVectorString  = offsetVectorString.beforePos( spacePos );
               ossimString secondOffsetVectorString = offsetVectorString.afterPos ( spacePos );

               const ossimRefPtr<ossimXmlAttribute> hrefAttribute = xml_nodes[i]->findAttribute( srsNameStr );
               const ossimString& offsetVectorSrsName = hrefAttribute->getValue();
               ossimString pcsCodeOffsetVectorStr = offsetVectorSrsName.after( pcsCodeDefinitionStr.string() );
               ossim_uint32 pcsCodeOffsetVector = pcsCodeOffsetVectorStr.toUInt32();
               if ( pcsCodeOffsetVector == 4326 )
               {
                  if ( firstAxisLabelString == ossimString( "Lat" ) )
                  {
                     if ( firstOffsetVectorString.toDouble() != 0.0 )
                     {    
                        geomKwl.add( ossimKeywordNames::DECIMAL_DEGREES_PER_PIXEL_LAT, 
                                     firstOffsetVectorString.c_str() );
                     }
                     else
                     {
                        geomKwl.add( ossimKeywordNames::DECIMAL_DEGREES_PER_PIXEL_LON, 
                                     secondOffsetVectorString.c_str() );
                     }
                  }
                  else
                  {
                     if ( firstOffsetVectorString.toDouble() != 0.0 )
                     { 
                        geomKwl.add( ossimKeywordNames::DECIMAL_DEGREES_PER_PIXEL_LON, 
                                     firstOffsetVectorString.c_str() );
                     }
                     else
                     {
                        geomKwl.add( ossimKeywordNames::DECIMAL_DEGREES_PER_PIXEL_LAT, 
                                     secondOffsetVectorString.c_str() );
                     }
                  }
               }
               else // map projection
                  if ( pcsCodeOffsetVector == pcsCodeGrid )
                  {
                     if ( firstAxisLabelString == ossimString( "X" ) )
                     {
                        if ( firstOffsetVectorString.toDouble() != 0.0 )
                        {    
                           geomKwl.add( ossimKeywordNames::METERS_PER_PIXEL_X_KW, 
                                        firstOffsetVectorString.c_str() );
                        }
                        else
                        {
                           geomKwl.add( ossimKeywordNames::METERS_PER_PIXEL_Y_KW, 
                                        secondOffsetVectorString.c_str() );
                        }
                     }
                     else
                     {
                        if ( firstOffsetVectorString.toDouble() != 0.0 )
                        { 
                           geomKwl.add( ossimKeywordNames::METERS_PER_PIXEL_Y_KW, 
                                        firstOffsetVectorString.c_str() );
                        }
                        else
                        {
                           geomKwl.add( ossimKeywordNames::METERS_PER_PIXEL_X_KW, 
                                        secondOffsetVectorString.c_str() );
                        }
                     }
                  }
                  else
                  {
                     /*
                       Need to perform a coordinate conversion on the 
                       offset vector to the pcs code of the grid
                     */
                  }
            }
         }
   }

   return success;
   
} // End: ossimGmlSupportData::getImageGeometry( geoKwl )
Esempio n. 2
0
ossimRefPtr<ossimNBandLutDataObject> ossimNitfImageHeader::createLut(
   ossim_uint32 bandIdx)const
{
   ossimRefPtr<ossimNBandLutDataObject> result;
   
   if(bandIdx < (ossim_uint32)getNumberOfBands())
   {
      const ossimRefPtr<ossimNitfImageBand> band = getBandInformation(bandIdx);
      if(band.valid())
      {
         ossim_uint32 bands = band->getNumberOfLuts();
         if(bands > 0)
         {
            if(band->getLut(0).valid())
            {
               ossim_uint32 entries = band->getLut(0)->getNumberOfEntries();
               
               result = new ossimNBandLutDataObject();
               result->create(entries, band->getNumberOfLuts());
               ossim_uint32 bIdx;
               ossim_uint32 entryIdx;

               for(bIdx = 0; bIdx < bands; ++bIdx)
               {
                  const ossimRefPtr<ossimNitfImageLut> lut = band->getLut(bIdx);
                  if(lut.valid())
                  {
                     for(entryIdx = 0; entryIdx < entries; ++entryIdx)
                     {
                        (*result)[entryIdx][bIdx] = (ossimNBandLutDataObject::LUT_ENTRY_TYPE)(lut->getValue(entryIdx));
                     }
                  }
               }
            }
         }
      }
   }

   return result;
}