#include <qimage.h>
#include <qstring.h>
#include "sharpen.h"
#include "blur.h"
#include "../tools/imageTools.h"
Include dependency graph for sharpen.cpp:
Go to the source code of this file.
Functions | |
| void | sharpenImage (QImage &image, float sigma, QPoint offset, QSize fullImageRes, QImage *edgeImage, bool blurEdges) |
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Definition at line 92 of file sharpen.cpp. References b1, b2, blurImage(), edgeImage, HSVtoRGB(), and RGBtoHSV(). Referenced by GrainEditor::adjustImage(). 00095 {
00096 //construct blur copy
00097 QImage blurredImage = image.copy();
00098 blurImage( blurredImage, sigma );
00099
00100 //iterate over each pixel and adjust luminance value
00101 int x, y;
00102 QRgb *origRgb, *blurredRgb, *edgeRgb;
00103 uchar *origScanline;
00104 uchar *blurredScanline;
00105 uchar *edgesScanline = NULL;
00106
00107 for(y=0; y<image.height(); y++)
00108 {
00109 origScanline = image.scanLine(y);
00110 blurredScanline = blurredImage.scanLine(y);
00111 if( edgeImage != NULL )
00112 {
00113 int edgeY = ((edgeImage->height()-1) * (y+offset.y())) / (fullImageRes.height()-1);
00114 edgesScanline = edgeImage->scanLine(edgeY);
00115 }
00116
00117 for(x=0; x<image.width(); x++)
00118 {
00119 //get rgb triplets
00120 origRgb = ((QRgb*)origScanline+x);
00121 double r1 = ((double)qRed(*origRgb) )/255.0;
00122 double g1 = ((double)qGreen(*origRgb) )/255.0;
00123 double b1 = ((double)qBlue(*origRgb) )/255.0;
00124
00125 blurredRgb = ((QRgb*)blurredScanline+x);
00126 double r2 = ((double)qRed(*blurredRgb) )/255.0;
00127 double g2 = ((double)qGreen(*blurredRgb) )/255.0;
00128 double b2 = ((double)qBlue(*blurredRgb) )/255.0;
00129
00130 //sharpen the entire thing!
00131 float alpha;
00132 if( edgeImage == NULL)
00133 alpha = 1.0f;
00134 else
00135 {
00136 int edgeX = ((edgeImage->width()-1) * (x+offset.x())) / (fullImageRes.width()-1);
00137 edgeRgb = ((QRgb*)edgesScanline+edgeX);
00138
00139 alpha = ((float) qRed( *edgeRgb )) / 255.0f;
00140
00141 //blur regions, not edges
00142 if(!blurEdges)
00143 alpha = 1.0f - alpha;
00144 }
00145
00146 //convert to hsv
00147 double h1,s1,v1;
00148 RGBtoHSV(r1,g1,b1,&h1,&s1,&v1);
00149
00150 double h2,s2,v2;
00151 RGBtoHSV(r2,g2,b2,&h2,&s2,&v2);
00152
00153 //reset v
00154 v1 = (alpha * QMIN( QMAX(2*v1 - v2, 0), 1.0 )) + (1-alpha)*v1;
00155
00156 //convert adjusted color back to rgb colorspace and clamp
00157 HSVtoRGB( &r1,&g1,&b1, h1,s1,v1);
00158 int rp = (int) QMIN( QMAX((r1*255), 0), 255 );
00159 int gp = (int) QMIN( QMAX((g1*255), 0), 255 );
00160 int bp = (int) QMIN( QMAX((b1*255), 0), 255 );
00161
00162 //set adjusted color value
00163 *origRgb = qRgb(rp,gp,bp);
00164 } //x
00165 } //y
00166
00167 }
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1.3.9.1