From 555651690788bf316fe83b80a5ef945302dd0909 Mon Sep 17 00:00:00 2001
From: Josh Klontz <Joshua.Klontz@noblis.org>
Date: Thu, 14 Nov 2013 14:00:31 -0500
Subject: [PATCH] fixed ShowTransform empty matrix edge case

---
 openbr/plugins/gui.cpp           | 3 ++-
 openbr/plugins/slidingwindow.cpp | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/openbr/plugins/gui.cpp b/openbr/plugins/gui.cpp
index 526a480..d7bdd74 100644
--- a/openbr/plugins/gui.cpp
+++ b/openbr/plugins/gui.cpp
@@ -447,7 +447,8 @@ public:
             }
             emit this->changeTitle(newTitle);
 
-            foreach(const cv::Mat & m, t) {
+            foreach (const cv::Mat &m, t) {
+                if (!m.data) continue;
                 qImageBuffer = toQImage(m);
                 displayBuffer->convertFromImage(qImageBuffer);
 
diff --git a/openbr/plugins/slidingwindow.cpp b/openbr/plugins/slidingwindow.cpp
index 8063f46..458f681 100644
--- a/openbr/plugins/slidingwindow.cpp
+++ b/openbr/plugins/slidingwindow.cpp
@@ -270,6 +270,7 @@ class Detector : public Transform
     {
         const float aspectRatio = getAspectRatio(data);
         TemplateList cropped = cropTrainingSamples(data, aspectRatio);
+        qDebug("Detector using: %d training samples.", cropped.size());
         cropped.first().file.set("aspectRatio", aspectRatio);
         transform->train(cropped);
     }
--
libgit2 0.21.4