Add InterFrameVariance module

Now modules support variable number of inputs
2016-12-20 18:21:33 +00:00
parent f42be2c25b
commit 57c81319b2
7 changed files with 184 additions and 12 deletions
@@ -0,0 +1,111 @@
+/*    This file is a part of plaYUVer project
+ *    Copyright (C) 2014-2016  by Luis Lucas      (luisfrlucas@gmail.com)
+ *                                Joao Carreira   (jfmcarreira@gmail.com)
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License along
+ *   with this program; if not, write to the Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/**
+ * \file     InterFrameVariance.cpp
+ * \brief    Variance across several frames
+ */
+
+#include "InterFrameVariance.h"
+#include "lib/LibMemory.h"
+
+InterFrameVariance::InterFrameVariance()
+{
+  /* Module Definition */
+  m_iModuleAPI = MODULE_API_2;                              // Use API version 2 (recommended).
+  // See this example for details on the functions prototype
+  m_iModuleType = FRAME_PROCESSING_MODULE;                  // Apply module to the frames or to the whole sequence.
+  m_pchModuleCategory = "Measurements";                     // Category (sub-menu)
+  m_pchModuleName = "InterFrameVariance";                   // Name
+  m_pchModuleTooltip = "Measure the variance across several frames";
+  m_uiNumberOfFrames = MODULE_REQUIRES_SEVERAL_FRAMES;      // Number of Frames required (This module allows a variable number of inputs)
+  m_uiModuleRequirements = MODULE_REQUIRES_NEW_WINDOW;      // Module requirements (check PlaYUVerModulesIf.h).
+  // Several requirements should be "or" between each others.
+  m_pcFrameVariance = NULL;
+
+}
+
+Bool InterFrameVariance::create( std::vector<PlaYUVerFrame*> apcFrameList )
+{
+  m_uiNumberOfFrames = Module_NumberOfFrames( apcFrameList.size() );
+
+  _BASIC_MODULE_API_2_CHECK_
+
+  for( UInt i = 1; i < apcFrameList.size(); i++ )
+    if( !apcFrameList[i]->haveSameFmt( apcFrameList[0], PlaYUVerFrame::MATCH_COLOR_SPACE | PlaYUVerFrame::MATCH_RESOLUTION | PlaYUVerFrame::MATCH_BITS ) )
+      return false;
+
+  m_pcFrameVariance = new PlaYUVerFrame( apcFrameList[0]->getWidth(), apcFrameList[0]->getHeight(), PlaYUVerFrame::GRAY, 8 );
+  getMem2D( &m_pVariance, apcFrameList[0]->getHeight(), apcFrameList[0]->getWidth() );
+
+  return true;
+}
+
+PlaYUVerFrame* InterFrameVariance::process( std::vector<PlaYUVerFrame*> apcFrameList )
+{
+  Int numFrames = apcFrameList.size();
+
+  Pel* pInput[numFrames];
+  Pel* pOutputPelYUV = m_pcFrameVariance->getPelBufferYUV()[0][0];
+
+  for( Int i = 0; i < numFrames; i++ )
+  {
+    pInput[i] = apcFrameList[i]->getPelBufferYUV()[0][0];
+  }
+
+  Double maxVariance = 0;
+  for( UInt y = 0; y < m_pcFrameVariance->getHeight(); y++ )
+    for( UInt x = 0; x < m_pcFrameVariance->getWidth(); x++ )
+    {
+      Int sum = 0;
+      Int v = 0;
+      m_pVariance[y][x] = 0;
+
+      for( Int i = 0; i < numFrames; i++ )
+      {
+        v = *pInput[i]++;
+        sum += v;
+        m_pVariance[y][x] += v * v;
+
+      }
+      //Final result of the variance for one block
+      m_pVariance[y][x] -= Double( sum * sum ) / Double( numFrames );
+      m_pVariance[y][x] /=  Double( numFrames );
+      if( m_pVariance[y][x] > maxVariance )
+        maxVariance =  m_pVariance[y][x];
+    }
+
+  for( UInt y = 0; y < m_pcFrameVariance->getHeight(); y++ )
+    for( UInt x = 0; x < m_pcFrameVariance->getWidth(); x++ )
+    {
+      *pOutputPelYUV++ =  m_pVariance[y][x] * 255 / maxVariance;
+    }
+  return m_pcFrameVariance;
+}
+
+Void InterFrameVariance::destroy()
+{
+  if( m_pVariance )
+    freeMem2D( m_pVariance );
+  m_pVariance = NULL;
+  if( m_pcFrameVariance )
+    delete m_pcFrameVariance;
+  m_pcFrameVariance = NULL;
+}
+