tracker/nn: Add support for recurrent model and further tweaks

Regarding tweaks:
* EWA smoothing of head ROI. Smoothing strength is a UI setting.
* Adjustible zoom into the detected face. The predicted ROI is scaled by a factor the user can set. There is a sweet spot somewhere near 1.
* Adjustible number of threads
* The ROI is no longer taken as model output directly. This was actually not needed. Perhaps as auxiliary training objective for the network. But the tracker implementation now just uses a square area around the head center according to the predicted head size.
* Add comment and debug notification on face ROI model output

1 files changed, 139 insertions, 7 deletions

diff --git a/tracker-neuralnet/neuralnet-trackercontrols.ui b/tracker-neuralnet/neuralnet-trackercontrols.ui
index 5f72a809..acbfe909 100644
--- a/tracker-neuralnet/neuralnet-trackercontrols.ui
+++ b/tracker-neuralnet/neuralnet-trackercontrols.ui
@@ -9,15 +9,15 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>727</width>
-    <height>202</height>
+    <width>721</width>
+    <height>277</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>Tracker settings</string>
   </property>
   <layout class="QGridLayout" name="gridLayout">
-   <item row="5" column="0">
+   <item row="9" column="0">
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="standardButtons">
       <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
@@ -364,11 +364,143 @@ Don't roll or change position.</string>
      </layout>
     </widget>
    </item>
-   <item row="4" column="0">
-    <widget class="QCheckBox" name="showNetworkInput">
-     <property name="text">
-      <string>Show Network Input</string>
+   <item row="5" column="0">
+    <widget class="QGroupBox" name="tuningOptionsBox">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="minimumSize">
+      <size>
+       <width>0</width>
+       <height>0</height>
+      </size>
+     </property>
+     <property name="title">
+      <string>Tuning / Debug</string>
      </property>
+     <layout class="QGridLayout" name="gridLayout_2">
+      <item row="0" column="7">
+       <widget class="Line" name="line_3">
+        <property name="orientation">
+         <enum>Qt::Vertical</enum>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="8">
+       <widget class="QLabel" name="threadCountLabel">
+        <property name="text">
+         <string>Thread Count</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="2">
+       <widget class="QLabel" name="roiFilterAlphaLabel">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Minimum" vsizetype="Minimum">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="text">
+         <string>ROI Smoothing Alpha</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="1">
+       <widget class="Line" name="line">
+        <property name="orientation">
+         <enum>Qt::Vertical</enum>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="0">
+       <widget class="QCheckBox" name="showNetworkInput">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="text">
+         <string>Show Network Input</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="3">
+       <widget class="QDoubleSpinBox" name="roiFilterAlpha">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="maximumSize">
+         <size>
+          <width>150</width>
+          <height>16777215</height>
+         </size>
+        </property>
+        <property name="wrapping">
+         <bool>false</bool>
+        </property>
+        <property name="decimals">
+         <number>2</number>
+        </property>
+        <property name="maximum">
+         <double>1.000000000000000</double>
+        </property>
+        <property name="singleStep">
+         <double>0.010000000000000</double>
+        </property>
+        <property name="value">
+         <double>1.000000000000000</double>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="5">
+       <widget class="QLabel" name="roiZoomLabel">
+        <property name="text">
+         <string>ROI Zoom</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="4">
+       <widget class="Line" name="line_2">
+        <property name="orientation">
+         <enum>Qt::Vertical</enum>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="6">
+       <widget class="QDoubleSpinBox" name="roiZoom">
+        <property name="minimum">
+         <double>0.100000000000000</double>
+        </property>
+        <property name="maximum">
+         <double>2.000000000000000</double>
+        </property>
+        <property name="singleStep">
+         <double>0.010000000000000</double>
+        </property>
+        <property name="value">
+         <double>1.000000000000000</double>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="9">
+       <widget class="QSpinBox" name="threadCount">
+        <property name="minimum">
+         <number>1</number>
+        </property>
+        <property name="maximum">
+         <number>32</number>
+        </property>
+       </widget>
+      </item>
+     </layout>
     </widget>
    </item>
   </layout>