diff --git a/EyeRecToo/src/GazeEstimation.cpp b/EyeRecToo/src/GazeEstimation.cpp
index 02556c8195dcab4b7ae670b4c5832e0f76bced69..320767109b4f70ee5db6e73f96c668f9e9a35966 100644
--- a/EyeRecToo/src/GazeEstimation.cpp
+++ b/EyeRecToo/src/GazeEstimation.cpp
@@ -333,12 +333,10 @@ void GazeEstimation::calibrate()
     emit calibrationFinished(true, "");
 }
 
-GazeEstimate GazeEstimation::estimate(DataTuple dataTuple)
+GazeEstimate GazeEstimation::getGazeEstimate(const DataTuple& dataTuple)
 {
     GazeEstimate gazeEstimate;
-
     if (calibrated && gazeEstimationMethod) {
-        // TODO: GazeEstimates in the DataTuple
         GazeEstimate left, right, binocular;
         gazeEstimationMethod->estimate(dataTuple, left, right, binocular);
 
@@ -353,13 +351,15 @@ GazeEstimate GazeEstimation::estimate(DataTuple dataTuple)
             gazeEstimate = right;
             break;
         }
-        dataTuple.field.gazeEstimate = gazeEstimate;
     }
+    return gazeEstimate;
+}
 
+void GazeEstimation::estimate(DataTuple dataTuple)
+{
+    dataTuple.field.gazeEstimate = getGazeEstimate(dataTuple);
     drawGazeEstimationInfo(dataTuple);
-
     emit gazeEstimationDone(dataTuple);
-    return gazeEstimate;
 }
 
 void GazeEstimation::printAccuracyInfo(const cv::Mat& errors, const QString& which, const double& diagonal, float& mu, float& sigma)
@@ -383,7 +383,7 @@ void GazeEstimation::evaluate()
     evaluationTuples.clear();
     for (unsigned int i = 0; i < collectedTuples.size(); i++)
         if (collectedTuples[i].isEvaluation() || (cfg.autoEvaluation && collectedTuples[i].isAutoEval())) {
-            if (estimate(collectedTuples[i]).valid)
+            if (getGazeEstimate(collectedTuples[i]).valid)
                 evaluationTuples.push_back(&collectedTuples[i]);
         }
 
@@ -432,7 +432,7 @@ void GazeEstimation::evaluate()
     Mat errors;
     for (unsigned int i = 0; i < evaluationTuples.size(); i++) {
         Point3f gt = evaluationTuples[i]->field.collectionMarker.center;
-        Point3f gaze = to3D(estimate(*evaluationTuples[i]).gp);
+        Point3f gaze = to3D(getGazeEstimate(*evaluationTuples[i]).gp);
         errorVectors.push_back(ErrorVector(gt, gaze));
         errors.push_back(errorVectors.back().magnitude());
     }
diff --git a/EyeRecToo/src/GazeEstimation.h b/EyeRecToo/src/GazeEstimation.h
index cf16d00e5839f81587ee3ba2f0499b0f6161e777..b82f05ce148dc173556f88c36aae7435a9ed8a81 100644
--- a/EyeRecToo/src/GazeEstimation.h
+++ b/EyeRecToo/src/GazeEstimation.h
@@ -225,7 +225,7 @@ public slots:
 
     void updateTemporalGazes(std::vector<CollectionTuple>& tuples);
     void calibrate();
-    GazeEstimate estimate(DataTuple dataTuple);
+    void estimate(DataTuple dataTuple);
     void evaluate();
     void printAccuracyInfo(const cv::Mat& errors, const QString& which, const double& diagonal, float& mu, float& sigma);
 
@@ -255,6 +255,7 @@ private:
     cv::Mat vis;
     cv::Mat overlay;
     int lastOverlayIdx;
+    GazeEstimate getGazeEstimate(const DataTuple& dataTuple);
 
 private slots:
     void detectOutliers();