- blur.x1*QuantumScale*GetPixelRed(composite_image,p),
- blur.y1*QuantumScale*GetPixelGreen(composite_image,p),
- blur.x2*QuantumScale*GetPixelRed(composite_image,p),
- blur.y2*QuantumScale*GetPixelGreen(composite_image,p) );
+ blur.x1*QuantumScale*GetPixelRed(source_image,p),
+ blur.y1*QuantumScale*GetPixelGreen(source_image,p),
+ blur.x2*QuantumScale*GetPixelRed(source_image,p),
+ blur.y2*QuantumScale*GetPixelGreen(source_image,p) );