Added a threshold slider to the impulse denoise tool. At large values it can lead to a bit of cratering, but otherwise it allows some flexibility that is useful as a precursor to the pyramid denoise filter. Small values on the slider are less impulse NR, larger values yield more NR.

rtengine/refreshmap.h

@@ -28,23 +28,12 @@
 #define AUTOEXP        31
 #define RGBCURVE       15
 #define LUMINANCECURVE 6
-<<<<<<< local
-#define SHARPENING     3//2
-#define IMPULSEDENOISE 3//2
-#define LUMADENOISE    3//2
-=======
 #define SHARPENING     2
 #define IMPULSEDENOISE 2
 #define LUMADENOISE    2
->>>>>>> other
 #define WHITEBALANCE   255
-<<<<<<< local
-#define COLORBOOST     3//1
-#define COLORDENOISE   3//1
-=======
 #define COLORBOOST     1
 #define COLORDENOISE   1
->>>>>>> other
 #define DIRPYRDENOISE  3
 #define CROP           16384
 #define EXIF           32768