blur.h File Reference

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Functions
void	blurImage (QImage &image, float sigma)
void	blurImage (QImage &image, float sigma, QPoint offset, QSize fullImageRes, QImage *edges, int *regions, int numRegions, bool targetEdges)

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Function Documentation

void blurImage	(	QImage &	image,
		float	sigma
	)

Definition at line 94 of file blur.cpp.

References blurImage().

Referenced by GrainEditor::adjustImage(), blurImage(), EdgeDetect::constructEdgeImage(), and sharpenImage().

{
  //supply dummy data for edges, notably NULL for the edge image pointer.
  //other values have no effect
  blurImage( image, sigma, QPoint(0,0), image.size(), NULL, NULL, 0, false );
}

void blurImage	(	QImage &	image,
		float	sigma,
		QPoint	offset,
		QSize	fullImageRes,
		QImage *	edges,
		int *	regions,
		int	numRegions,
		bool	targetEdges
	)

Definition at line 101 of file blur.cpp.

References blurBuffer(), buffer, colBuffer, computeCoeffs(), displayOffset, edgeImage, fillBuffer(), fullRes, height, regionColBuffer, regionCount, regionMap, regionRowBuffer, resetImageData(), rowBuffer, and width.

{
  edgeImage = edges;
  regionMap = regions;
  regionCount = numRegions;
  displayOffset = offset;
  fullRes = fullImageRes;
  
  //compute blurring coeffecients
  computeCoeffs(sigma);
  
  //store image dimensions
  width = image.width();
  height = image.height();
  
  //Construct float buffer that is the size of the image/
  //In order to conserve memory process image three times, once for
  //each color channel.
  buffer = new float[ width * height ];

  rowBuffer = new float[width];
  colBuffer = new float[height];
  
  regionRowBuffer = new float[width * numRegions];
  regionColBuffer = new float[height * numRegions];
  
  //iterate over each color channel
  int channel;
  for( channel = 0; channel <=2; channel++)
  {
    //copy color data into float buffer
    fillBuffer( image, channel );
    
    //blur buffer data
    blurBuffer();
    
    //reset image data used blurred buffer
    resetImageData(image, channel, targetEdges);
  }
  
  //delete buffer
  delete[] buffer;
  delete[] rowBuffer;
  delete[] colBuffer;
}