Purple fringing tool added. May also be useful for CA desaturation.

rtengine/procparams.h

@@ -137,6 +137,18 @@ class ColorDenoiseParams {
         int		amount;
 };
 	
+	/**
+	 * Parameters of defringing
+	 */
+	class DefringeParams {
+		
+    public:
+        bool    enabled;
+        double  radius;
+        int     threshold;
+	};
+	
+	
 	/**
 	 * Parameters of impulse denoising
 	 */
@@ -403,6 +415,7 @@ class ProcParams {
         ColorShiftParams        colorShift;     ///< Color shift parameters
         LumaDenoiseParams       lumaDenoise;    ///< Luminance denoising parameters
         ColorDenoiseParams      colorDenoise;   ///< Color denoising parameters
+	DefringeParams			defringe; ///< Impulse denoising parameters
 	ImpulseDenoiseParams    impulseDenoise; ///< Impulse denoising parameters
 	DirPyrDenoiseParams		dirpyrDenoise;  ///< Directional Pyramid denoising parameters
         SHParams                sh;             ///< Shadow/highlight enhancement parameters