From d022425a57b4ff7c8bb3d8cb8c0af343276307b7 Mon Sep 17 00:00:00 2001
From: Josh Klontz <Joshua.Klontz@noblis.org>
Date: Tue, 15 Apr 2014 10:21:47 -0400
Subject: [PATCH] added ExtractMetadataTransform

---
 openbr/plugins/misc.cpp | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+), 0 deletions(-)

diff --git a/openbr/plugins/misc.cpp b/openbr/plugins/misc.cpp
index 37f8896..d8d7c14 100644
--- a/openbr/plugins/misc.cpp
+++ b/openbr/plugins/misc.cpp
@@ -366,6 +366,29 @@ BR_REGISTER(Transform, RegexPropertyTransform)
 
 /*!
  * \ingroup transforms
+ * \brief Create matrix from metadata values.
+ * \author Josh Klontz \cite jklontz
+ */
+class ExtractMetadataTransform : public UntrainableMetaTransform
+{
+    Q_OBJECT
+    Q_PROPERTY(QStringList keys READ get_keys WRITE set_keys RESET reset_keys STORED false)
+    BR_PROPERTY(QStringList, keys, QStringList())
+
+    void project(const Template &src, Template &dst) const
+    {
+        dst.file = src.file;
+        QList<float> values;
+        foreach (const QString &key, keys)
+            values.append(src.file.get<float>(key));
+        dst.append(OpenCVUtils::toMat(values, 1));
+    }
+};
+
+BR_REGISTER(Transform, ExtractMetadataTransform)
+
+/*!
+ * \ingroup transforms
  * \brief Store the last matrix of the input template as a metadata key with input property name.
  * \author Charles Otto \cite caotto
  */
--
libgit2 0.21.4