Smooth landmarks on significant face position or pose changes

windows/DoubleHitBalls-win/DoubleHitBalls-win/FaceLandmarkDetector.cpp

@@ -248,7 +248,7 @@ void FaceLandmarkDetector::FindLandmarkThreadProc(size_t threadIndex)
 
 			localOutputLandmarks.faceRect = localInputFace.faceRect;
 			localOutputLandmarks.frameIndex = localInputFace.frameIndex;
-			localOutputLandmarks.similarity = localInputFace.similarity;
+			localOutputLandmarks.noticeablyChanged = localInputFace.noticeablyChanged;
 			localOutputLandmarks.valid = true;
 		}
 		else
@@ -450,10 +450,11 @@ void FaceLandmarkDetector::InnerSeparateFacesToBuckets(std::vector<cv::Rect>& fa
 				}
 			}
 
-			inOutBucketArr[j].similarity = calcSimilarity(inOutBucketArr[j].faceFrame, facesBelongsToSpace[j][lastIndex].second);
 			inOutBucketArr[j].faceRect = facesBelongsToSpace[j][lastIndex].first;
 			inOutBucketArr[j].faceFrame = facesBelongsToSpace[j][lastIndex].second;
-			
+			inOutBucketArr[j].noticeablyChanged =
+				calcSimilarity(inOutBucketArr[j].faceFrame, facesBelongsToSpace[j][lastIndex].second) > 0.01 ||
+				lastDistance > 100.0;
 
 			facesBelongsToSpace[j].erase(facesBelongsToSpace[j].begin() + lastIndex);
 

windows/DoubleHitBalls-win/DoubleHitBalls-win/FaceLandmarkDetector.h

@@ -35,7 +35,7 @@ struct FaceIntermediateStruct
 	cv::Mat faceFrame;
 
 	int frameIndex;
-	double similarity = 0.0;
+	bool noticeablyChanged = false;
 };
 
 
@@ -47,7 +47,7 @@ struct FaceLandmarkStruct
 	std::array<cv::Point2f, LANDMARK_POINT_COUNT> landmarkArr;
 
 	int frameIndex;
-	double similarity = 0.0;
+	bool noticeablyChanged = false;
 };