From b57870af61202a09bbf22c457c2e92a11b513982 Mon Sep 17 00:00:00 2001
From: bklare <bklare@users.noreply.github.com>
Date: Mon, 15 Jun 2015 21:08:41 +0000
Subject: [PATCH] Output to gallery that can be ingested into matlab

---
 openbr/plugins/gallery/matlab.cpp | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 scripts/matlab/loadOpenBR.m       | 28 ++++++++++++++++++++++++++++
 2 files changed, 120 insertions(+), 0 deletions(-)
 create mode 100644 openbr/plugins/gallery/matlab.cpp
 create mode 100644 scripts/matlab/loadOpenBR.m

diff --git a/openbr/plugins/gallery/matlab.cpp b/openbr/plugins/gallery/matlab.cpp
new file mode 100644
index 0000000..ba9e296
--- /dev/null
+++ b/openbr/plugins/gallery/matlab.cpp
@@ -0,0 +1,92 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright 2015 Rank One Corporation                                       *
+ *                                                                           *
+ * Licensed under the Apache License, Version 2.0 (the "License");           *
+ * you may not use this file except in compliance with the License.          *
+ * You may obtain a copy of the License at                                   *
+ *                                                                           *
+ *     http://www.apache.org/licenses/LICENSE-2.0                            *
+ *                                                                           *
+ * Unless required by applicable law or agreed to in writing, software       *
+ * distributed under the License is distributed on an "AS IS" BASIS,         *
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  *
+ * See the License for the specific language governing permissions and       *
+ * limitations under the License.                                            *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#include <openbr/plugins/openbr_internal.h>
+
+namespace br
+{
+/*!
+ * \ingroup galleries
+ * \brief A simple matrix container format that is easily read into matlab. 
+ *          Templates are concatenated into column vectors, and output into a single matrix.
+ *          Note that this is not intended to read in .matlab files, as this is simply 
+ *          a quick and dirty for analyzing data in a more interactive environment.
+ *          Use the loadOpenBR.m script to ingest the resultant file into Matlab
+ * \author Brendan Klare \cite bklare
+ */
+class matlabGallery : public FileGallery
+{
+    Q_OBJECT
+
+    TemplateList templates;
+
+    ~matlabGallery()
+    {
+        if (!f.open(QFile::WriteOnly))
+            qFatal("Failed to open %s for writting.", qPrintable(file));
+
+        int r = templates.first().m().rows;     
+        int c = templates.first().m().cols;     
+
+        for (int i = templates.size() - 1; i >= 0; i--) {        
+            if (templates[i].m().rows != r || templates[i].m().cols != c) {
+                qDebug() << templates[i].file.name << " : template not appended to gallery b/c rows and col dimensions differ.";
+                templates.removeAt(i);
+            }
+        }
+
+        cv::Mat m(r * c, templates.size(), CV_32FC1);
+        for (int i = 0; i < templates.size(); i++) {
+            cv::Mat temp;
+            templates[i].m().copyTo(temp);
+            temp.reshape(1, 1);
+            m.col(i) = temp;
+        }
+
+        f.write((const char *) &m.rows, 4);
+        f.write((const char *) &m.cols, 4);
+        qint64 rowSize = m.cols * sizeof(float);
+        for (int i = 0; i < m.rows; i++) 
+            f.write((const char *) m.row(i).data, rowSize);
+
+        f.close();
+    }
+
+    TemplateList readBlock(bool *done)
+    {
+        qDebug() << "matlabGallery is not intended to be read. This gallery is meant for export only.";
+        TemplateList t;
+        *done = false;
+        return t;
+    }
+
+    void write(const Template &t)
+    {
+        if (t.m().type() != CV_32FC1) 
+            qDebug() << t.file.name << ": template not appended to gallery b/c it must be type CV_32FC1.";
+        else
+            templates.append(t);
+    }
+
+    void init()
+    {
+        FileGallery::init();
+    }
+};
+
+BR_REGISTER(Gallery, matlabGallery)
+
+#include "gallery/matlab.moc"
diff --git a/scripts/matlab/loadOpenBR.m b/scripts/matlab/loadOpenBR.m
new file mode 100644
index 0000000..45ffbe2
--- /dev/null
+++ b/scripts/matlab/loadOpenBR.m
@@ -0,0 +1,28 @@
+% This script will read a matrix container format where the first two entires are 32-bit ints
+% specifying the number of rows and columns (respectively). The remaining buffer is 32-bit floats
+% with all the matrix contents, in row-major order.
+function [x] = loadBin(filename,reverse)
+   
+    if nargin < 2,
+        % Use this option if the data was serlialized in column-major order.
+        reverse = false;
+    end
+
+    fileStream = fopen(filename,'r');
+    if fileStream == -1,
+        fprintf('Error opening file %s\n',filename);
+        x = 0;
+        return
+    end
+    
+    r = fread(fileStream,1,'int32');
+    c = fread(fileStream,1,'int32');
+    x = fread(fileStream,[c  r],'float32');
+    x = x';  % Matlab reads the file in column-major order
+    fclose(fileStream);
+
+    if reverse,
+        sz = size(x);
+        x = x';
+        x = reshape(x,sz);
+    end
--
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