redEye.h File Reference

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Functions
QImage *	removeRedeyeRegions (QString filename, QPoint topLeftExtreme, QPoint bottomRightExtreme, StatusWidget *status)

Function Documentation

removeRedeyeRegions()

QImage * removeRedeyeRegions	(	QString	filename,
		QPoint	topLeftExtreme,
		QPoint	bottomRightExtreme,
		StatusWidget *	status )

Definition at line 206 of file redEye.cpp.

{
  //store handle to status widget
  status = statusWidget;
  
  //load original image
  rawImage = QImage( filename );
  
  //sanity check: unable to load image
  if(rawImage.isNull()) { return NULL; }
 
  //convert to 32-bit depth if necessary
  if( rawImage.depth() < 32 ) { rawImage = rawImage.convertDepth( 32, Qt::AutoColor ); }
   
  //sanity check: make sure topLeftExtreme and bottomRightExtreme are within image boundary
  topLeftExtreme.setX( QMAX( topLeftExtreme.x(), 0 ) );
  topLeftExtreme.setY( QMAX( topLeftExtreme.y(), 0 ) );
  bottomRightExtreme.setX( QMIN( bottomRightExtreme.x(), rawImage.width()-1 ) );
  bottomRightExtreme.setY( QMIN( bottomRightExtreme.y(), rawImage.height()-1 ) );
 
  //setup progress bar
  QString statusMessage = qApp->translate( "removeRedeyeRegions", "Removing Red-Eye:" );
  status->showProgressBar( statusMessage, 100 );
  qApp->processEvents();  
  
  //update progress bar for every 1% of completion
  updateIncrement = (int) ( 0.01 * 
                            ( bottomRightExtreme.x() - topLeftExtreme.x() + 1 ) *
                            ( bottomRightExtreme.y() - topLeftExtreme.y() + 1 ) );
  newProgress = 0;   
 
  //find region of interest: constrain search box to boundary that actually contains red enough pixels
  findRegionOfInterest(topLeftExtreme, bottomRightExtreme);
 
  //if no pixels were found then immediately return a NULL pointer signaling no change
  if(topLeft.x() == -1) 
  { 
    //hide progress bar
    status->setStatus( "" );
    qApp->processEvents();
 
    return NULL; 
  }
 
  //load an editing image
  //two images mus be loaded becuase pixel values are replaced
  //using a compbination of niehgbors and their own in order
  //to avoid sharp lines at the edge of the saturated region
  editedImage = new QImage( filename );
  
  //sanity check: unable to allocated edited image
  if( editedImage == NULL) 
  { 
    //hide progress bar
    status->setStatus( "" );
    qApp->processEvents();
 
    return NULL; 
  }
 
  //convert to 32-bit depth if necessary
  if( editedImage->depth() < 32 )
  {
    QImage* tmp = editedImage;
    editedImage = new QImage( tmp->convertDepth( 32, Qt::AutoColor ) );
    delete tmp; tmp=NULL;
  }
  
  findBlobs();
  sortBlobsByDecreasingSize();
  findBestTwoBlobs();
 
  //if we found two good blobs then desaturate those only
  if(id1 != -1)
  {
    desaturateBlobs();
  }
  //else desaturate all pixels above thresh within selection area
  else
  {
    desaturateEntireImage(topLeftExtreme, bottomRightExtreme);
  }
 
  //remove status bar
  status->setStatus( "" );
  qApp->processEvents();
 
  //return pointer to edited image
  return editedImage;      
}

References desaturateBlobs(), desaturateEntireImage(), editedImage, findBestTwoBlobs(), findBlobs(), findRegionOfInterest(), id1, newProgress, rawImage, StatusWidget::setStatus(), StatusWidget::showProgressBar(), sortBlobsByDecreasingSize(), status, topLeft, and updateIncrement.

Referenced by EditingInterface::removeRedeye().