Show maximum pixel error on equals().

diff --git a/src/picture_asset.cc b/src/picture_asset.cc
index f5c10ce3b4eef2ad7dba12d0d21f856100527c22..c59664d9cb263833c3c8b0179a3e3460f12468c2 100644 (file)
--- a/src/picture_asset.cc
+++ b/src/picture_asset.cc
@@ -238,6 +238,7 @@ PictureAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt) const
 
                                vector<int> abs_diffs (image_A->comps[0].w * image_A->comps[0].h * image_A->numcomps);
                                int d = 0;
+                               int max_diff = 0;
 
                                for (int c = 0; c < image_A->numcomps; ++c) {
 
@@ -247,7 +248,9 @@ PictureAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt) const
 
                                        int const pixels = image_A->comps[c].w * image_A->comps[c].h;
                                        for (int j = 0; j < pixels; ++j) {
-                                               abs_diffs[d++] = abs (image_A->comps[c].data[j] - image_B->comps[c].data[j]);
+                                               int const t = abs (image_A->comps[c].data[j] - image_B->comps[c].data[j]);
+                                               abs_diffs[d++] = t;
+                                               max_diff = max (max_diff, t);
                                        }
                                }
 
@@ -270,7 +273,7 @@ PictureAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt) const
                                }
 
                                if (opt.verbose) {
-                                       cout << "\tmean pixel error " << mean << ", standard deviation " << std_dev << "\n";
+                                       cout << "\tmax pixel error " << max_diff << ", mean pixel error " << mean << ", standard deviation " << std_dev << "\n";
                                }
 
                                opj_image_destroy (image_A);