From: Carl Hetherington <cth@carlh.net>
Date: Sat, 30 Dec 2017 20:36:11 +0000 (+0000)
Subject: Try comparing images using RMS error metric.
X-Git-Tag: v2.11.32~12
X-Git-Url: https://git.carlh.net/gitweb/?p=dcpomatic.git;a=commitdiff_plain;h=aab799432bc91295227e82668839e98de54ec0d9

Try comparing images using RMS error metric.
---

diff --git a/test/test.cc b/test/test.cc
index 0c2f324e0..41b845f85 100644
--- a/test/test.cc
+++ b/test/test.cc
@@ -236,11 +236,8 @@ check_image (boost::filesystem::path ref, boost::filesystem::path check)
 	ref_image.read (ref.string ());
 	Magick::Image check_image;
 	check_image.read (check.string ());
-	BOOST_CHECK_MESSAGE (
-		!ref_image.compare(check_image),
-		ref << " differs from " << check << " "
-		    << ref_image.meanErrorPerPixel() << " " << ref_image.normalizedMaxError() << " " << ref_image.normalizedMeanError()
-		);
+	double const dist = ref_image.compare(check_image, Magick::RootMeanSquaredErrorMetric);
+	BOOST_CHECK_MESSAGE (dist < 0.001, ref << " differs from " << check << " " << dist);
 }
 
 void