From f42710f594a9cd545865e100e802b98c4be4d7e5 Mon Sep 17 00:00:00 2001
From: Alberto Griggio <griggio@fbk.eu>
Date: Sun, 12 Mar 2017 20:52:32 +0100
Subject: [PATCH] properly rescale the impulseDenoise settings in the fast
 pipeline

---
 rtengine/simpleprocess.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/rtengine/simpleprocess.cc b/rtengine/simpleprocess.cc
index f10378a07..c0e0c05bd 100644
--- a/rtengine/simpleprocess.cc
+++ b/rtengine/simpleprocess.cc
@@ -1378,10 +1378,14 @@ private:
             params.resize.enabled = false;
 
             params.sharpening = params.prsharpening;
+            params.impulseDenoise.thresh = 
+                int(float(params.impulseDenoise.thresh) * tmpScale);
+            if (tmpScale < 0.5) {
+                params.impulseDenoise.enabled = false;
+            }
             params.wavelet.strength =
                 int(float(params.wavelet.strength) * tmpScale);
             params.dirpyrDenoise.luma *= tmpScale;
-            
             params.dirpyrDenoise.smethod = "shal";
 
             const double dirpyreq_scale = min(tmpScale * 1.5, 1.0);