Example #1
0
// Create histogram for entry:
void ossimImageUtil::createHistogram(ossimRefPtr<ossimImageHandler>& ih,
                                     ossim_uint32 entry,
                                     bool useEntryIndex)
{
   static const char M[] = "ossimImageUtil::createHistogram #2";
   if(traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG) << M << " entered...\n";
   }
   
   if ( ih.valid() )
   {
      if (useEntryIndex)
      {
         // Set entry before deriving file name.
         ih->setCurrentEntry(entry);
         ossimNotify(ossimNotifyLevel_NOTICE) << "entry number: "<< entry << std::endl;
      }

      ossimFilename outputFile =
         ih->getFilenameWithThisExtension(ossimString(".his"), useEntryIndex);

      // Only build if needed:
      if ( (outputFile.exists() == false) || rebuildHistogram() )
      {
         ossimNotify(ossimNotifyLevel_NOTICE)
            << "Computing histogram for file: " << ih->getFilename() << std::endl;

         // Check handler to see if it's filtering bands.
         std::vector<ossim_uint32> originalBandList(0);
         if ( ih->isBandSelector() )
         { 
            // Capture for finalize method.
            ih->getOutputBandList( originalBandList );
            
            // Set output list to input.
            ih->setOutputToInputBandList();
         }

         ossimRefPtr<ossimImageHistogramSource> histoSource = new ossimImageHistogramSource;
         ossimRefPtr<ossimHistogramWriter> writer = new ossimHistogramWriter;
         
         histoSource->setMaxNumberOfRLevels(1); // Currently hard coded...
         
#if 0 /* TODO tmp drb */
         if( !ossim::isnan(histoMin) )
         {
            histoSource->setMinValueOverride(histoMin);
         }
         
         if( !ossim::isnan(histoMax) )
         {
            histoSource->setMaxValueOverride(histoMax);
         }
         
         if(histoBins > 0)
         {
            histoSource->setNumberOfBinsOverride(histoBins);
         }
#endif
         
         if(traceDebug())
         {
            ossimNotify(ossimNotifyLevel_DEBUG)
               << "Histogram mode: " << getHistogramMode() << "\n";
         }
         
         // Connect histogram source to image handler.
         histoSource->setComputationMode( getHistogramMode() );
         histoSource->connectMyInputTo(0, ih.get() );
         histoSource->enableSource();
         
         // Connect writer to histogram source.
         writer->connectMyInputTo(0, histoSource.get());
         writer->setFilename(outputFile);
         theStdOutProgress.setFlushStreamFlag(true);
         writer->addListener(&theStdOutProgress);
         
         // Compute...
         writer->execute();
         
         writer=0;

         // Reset the band list.
         if ( ih->isBandSelector() && originalBandList.size() )
         {
            ih->setOutputBandList( originalBandList );
         }

      } // Matches: if ( (outputFile.exists() == false) || rebuildHistogram() )
      
   } // Matches: if ( ih.valid() )

   if(traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG) << M << " exited...\n";
   }

} // End: ossimImageUtil::createHistogram #2
Example #2
0
// Create overview for entry:
void ossimImageUtil::createOverview(ossimRefPtr<ossimImageHandler>& ih,
                                    ossimRefPtr<ossimOverviewBuilderBase>& ob,
                                    ossim_uint32 entry,
                                    bool useEntryIndex,
                                    bool& consumedHistogramOptions)
{
   static const char M[] = "ossimImageUtil::createOverview #2";
   if(traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG) << M << " entered...\n";
   }
   
   if ( ih.valid() && ob.valid() )
   {
      if (useEntryIndex)
      {
         // Set entry before deriving file name.
         ih->setCurrentEntry(entry);
         ossimNotify(ossimNotifyLevel_NOTICE) << "entry number: "<< entry << std::endl;
      }
      
      ossimFilename outputFile =
         ih->getFilenameWithThisExtension(ossimString(".ovr"), useEntryIndex);
      
      if ( rebuildOverviews() )
      {
         ih->closeOverview(); 
         if ( outputFile.exists() )
         {
            outputFile.remove();
         }
      }

      if ( getInternalOverviewsFlag() )
      {
         if ( ih->getClassName() == "ossimTiffTileSource")
         {
            //---
            // INTERNAL_OVERVIEWS_FLAG_KW is set to true:
            // Tiff reader can handle internal overviews.  Set the output file to
            // input file.  Do it after the above remove so that if there were
            // external overviews they will get removed.
            //---
            outputFile = ih->getFilename();
         }
         else 
         {
            ossimNotify(ossimNotifyLevel_NOTICE)
               << "Internal overviews not supported for reader type: "
               <<ih->getClassName()
               << "\nIgnoring option..."
               << endl;
         }
      }

      if ( hasRequiredOverview( ih, ob ) == false )
      {
         //---
         // Set create histogram code...
         //
         // Notes:
         // 1) Must put this logic after any removal of external overview file.
         // 
         // 2) Base file could have built in overviews, e.g. jp2 files.  So the sequensor could
         //    start at R6 even if there is no external overview file.
         //
         // 3) If user want the histogram from R0 the overview builder can do as long as
         //    ossimImageHandler::getNumberOfDecimationLevels returns 1.  If we are starting
         //    overview building at R6 then we must do the create histogram in a separate path.
         //---
         ossimHistogramMode histoMode = OSSIM_HISTO_MODE_UNKNOWN;
         if ( createHistogram() ||
              ( createHistogramR0() && ( ih->getNumberOfDecimationLevels() == 1 ) ) )
         {
            histoMode = OSSIM_HISTO_MODE_NORMAL;
         }
         else if ( createHistogramFast() )
         {
            histoMode = OSSIM_HISTO_MODE_FAST;
         }
         
         if(traceDebug())
         {
            ossimNotify(ossimNotifyLevel_DEBUG) << "Histogram mode: " << histoMode << "\n";
         }
         
         if ( histoMode != OSSIM_HISTO_MODE_UNKNOWN )
         {
            consumedHistogramOptions = true;
            ob->setHistogramMode(histoMode);
            
            ossimNotify(ossimNotifyLevel_NOTICE)
               << "Creating overviews with histogram for file: " << ih->getFilename() << std::endl;
         }
         else
         {
            if ( histoMode != OSSIM_HISTO_MODE_UNKNOWN )
            {
               consumedHistogramOptions = false;  
               ossimNotify(ossimNotifyLevel_NOTICE)
                  << "Creating overviews for file: " << ih->getFilename() << std::endl;
            }
         }
         
         ob->setOutputFile(outputFile);
         ob->setInputSource(ih.get());
         
         // Create the overview for this entry in this file:
         if ( ob->execute() == false )
         {
            setErrorStatus( ossimErrorCodes::OSSIM_ERROR );
            ossimNotify(ossimNotifyLevel_WARN)
               << "Error returned creating overviews for file: " << ih->getFilename() << std::endl;
         }
      }
      else
      {
         consumedHistogramOptions = false;
         ossimNotify(ossimNotifyLevel_NOTICE)
            << "Image has required reduced resolution data sets." << std::endl;
      }
   }

   if(traceDebug())
   {
      ossimNotify(ossimNotifyLevel_DEBUG) << M << " exited...\n";
   }
}