// Update is called once per frame
        void Update()
        {
            if (sourceToMatHelper.IsPlaying() && sourceToMatHelper.DidUpdateThisFrame())
            {
                Mat rgbMat = sourceToMatHelper.GetMat();

                OpenCVForUnityUtils.SetImage(faceLandmarkDetector, rgbMat);

                //detect face rects
                List <UnityEngine.Rect> detectResult = faceLandmarkDetector.Detect();

                foreach (var rect in detectResult)
                {
                    //detect landmark points
                    List <Vector2> points = faceLandmarkDetector.DetectLandmark(rect);

                    //draw landmark points
                    OpenCVForUnityUtils.DrawFaceLandmark(rgbMat, points, new Scalar(0, 255, 0), 2);

                    //draw face rect
                    OpenCVForUnityUtils.DrawFaceRect(rgbMat, rect, new Scalar(255, 0, 0), 2);
                }

                //Imgproc.putText (rgbMat, "W:" + rgbMat.width () + " H:" + rgbMat.height () + " SO:" + Screen.orientation, new Point (5, rgbMat.rows () - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar (255, 255, 255), 1, Imgproc.LINE_AA, false);

                Utils.fastMatToTexture2D(rgbMat, texture);
            }
        }
        // Update is called once per frame
        void Update()
        {
            if (sourceToMatHelper.IsPlaying() && sourceToMatHelper.DidUpdateThisFrame())
            {
                Mat rgbMat = sourceToMatHelper.GetMat();

                using (MatOfRect locations = new MatOfRect())
                    using (MatOfDouble weights = new MatOfDouble())
                    {
                        des.setSVMDetector(HOGDescriptor.getDefaultPeopleDetector());
                        des.detectMultiScale(rgbMat, locations, weights);

                        OpenCVForUnity.CoreModule.Rect[] rects = locations.toArray();
                        for (int i = 0; i < rects.Length; i++)
                        {
                            //Debug.Log ("detected person " + rects [i]);
                            Imgproc.rectangle(rgbMat, new Point(rects[i].x, rects[i].y), new Point(rects[i].x + rects[i].width, rects[i].y + rects[i].height), new Scalar(255, 0, 0), 2);
                        }
                        //Debug.Log (locations.ToString ());
                        //Debug.Log (weights.ToString ());

                        Utils.fastMatToTexture2D(rgbMat, texture);
                    }
            }
        }
Beispiel #3
0
        // Update is called once per frame
        void Update()
        {
            if (sourceToMatHelper.IsPlaying() && sourceToMatHelper.DidUpdateThisFrame())
            {
                Mat rgbMat = sourceToMatHelper.GetMat();

                // detect faces.
                List <Rect> detectResult = new List <Rect>();
                if (useDlibFaceDetecter)
                {
                    OpenCVForUnityUtils.SetImage(faceLandmarkDetector, rgbMat);
                    List <UnityEngine.Rect> result = faceLandmarkDetector.Detect();

                    foreach (var unityRect in result)
                    {
                        detectResult.Add(new Rect((int)unityRect.x, (int)unityRect.y, (int)unityRect.width, (int)unityRect.height));
                    }
                }
                else
                {
                    // convert image to greyscale.
                    Imgproc.cvtColor(rgbMat, grayMat, Imgproc.COLOR_RGB2GRAY);

                    using (Mat equalizeHistMat = new Mat())
                        using (MatOfRect faces = new MatOfRect())
                        {
                            Imgproc.equalizeHist(grayMat, equalizeHistMat);

                            cascade.detectMultiScale(equalizeHistMat, faces, 1.1f, 2, 0 | Objdetect.CASCADE_SCALE_IMAGE, new Size(equalizeHistMat.cols() * 0.15, equalizeHistMat.cols() * 0.15), new Size());

                            detectResult = faces.toList();

                            // correct the deviation of the detection result of the face rectangle of OpenCV and Dlib.
                            foreach (Rect r in detectResult)
                            {
                                r.y += (int)(r.height * 0.1f);
                            }
                        }
                }

                // face tracking.
                List <TrackedRect> trackedRects = new List <TrackedRect>();
                rectangleTracker.UpdateTrackedObjects(detectResult);
                rectangleTracker.GetObjects(trackedRects, true);

                // create noise filter.
                foreach (var openCVRect in trackedRects)
                {
                    if (openCVRect.state == TrackedState.NEW)
                    {
                        if (!lowPassFilterDict.ContainsKey(openCVRect.id))
                        {
                            lowPassFilterDict.Add(openCVRect.id, new LowPassPointsFilter((int)faceLandmarkDetector.GetShapePredictorNumParts()));
                        }
                        if (!opticalFlowFilterDict.ContainsKey(openCVRect.id))
                        {
                            opticalFlowFilterDict.Add(openCVRect.id, new OFPointsFilter((int)faceLandmarkDetector.GetShapePredictorNumParts()));
                        }
                    }
                    else if (openCVRect.state == TrackedState.DELETED)
                    {
                        if (lowPassFilterDict.ContainsKey(openCVRect.id))
                        {
                            lowPassFilterDict[openCVRect.id].Dispose();
                            lowPassFilterDict.Remove(openCVRect.id);
                        }
                        if (opticalFlowFilterDict.ContainsKey(openCVRect.id))
                        {
                            opticalFlowFilterDict[openCVRect.id].Dispose();
                            opticalFlowFilterDict.Remove(openCVRect.id);
                        }
                    }
                }

                // detect face landmark points.
                OpenCVForUnityUtils.SetImage(faceLandmarkDetector, rgbMat);
                List <List <Vector2> > landmarkPoints = new List <List <Vector2> >();
                foreach (var openCVRect in trackedRects)
                {
                    if (openCVRect.state > TrackedState.NEW_DISPLAYED && openCVRect.state < TrackedState.NEW_HIDED)
                    {
                        UnityEngine.Rect rect   = new UnityEngine.Rect(openCVRect.x, openCVRect.y, openCVRect.width, openCVRect.height);
                        List <Vector2>   points = faceLandmarkDetector.DetectLandmark(rect);

                        // apply noise filter.
                        if (enableNoiseFilter)
                        {
                            opticalFlowFilterDict[openCVRect.id].Process(rgbMat, points, points);
                            lowPassFilterDict[openCVRect.id].Process(rgbMat, points, points);
                        }

                        landmarkPoints.Add(points);
                    }
                }

                // filter non frontal faces.
                if (filterNonFrontalFaces)
                {
                    for (int i = 0; i < landmarkPoints.Count; i++)
                    {
                        if (frontalFaceChecker.GetFrontalFaceRate(landmarkPoints[i]) < frontalFaceRateLowerLimit)
                        {
                            trackedRects.RemoveAt(i);
                            landmarkPoints.RemoveAt(i);
                            i--;
                        }
                    }
                }

                // face swapping.
                if (landmarkPoints.Count >= 2)
                {
                    int ann = 0, bob = 1;
                    for (int i = 0; i < landmarkPoints.Count - 1; i += 2)
                    {
                        ann = i;
                        bob = i + 1;

                        faceSwapper.SwapFaces(rgbMat, landmarkPoints[ann], landmarkPoints[bob], 1);
                    }
                }

                // draw face rects.
                if (displayFaceRects)
                {
                    for (int i = 0; i < trackedRects.Count; i++)
                    {
                        Rect             openCVRect = trackedRects[i];
                        UnityEngine.Rect rect       = new UnityEngine.Rect(openCVRect.x, openCVRect.y, openCVRect.width, openCVRect.height);
                        OpenCVForUnityUtils.DrawFaceRect(rgbMat, rect, new Scalar(255, 0, 0, 255), 2);
                        //Imgproc.putText (rgbMat, " " + frontalFaceChecker.GetFrontalFaceAngles (landmarkPoints [i]), new Point (rect.xMin, rect.yMin - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar (255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
                        //Imgproc.putText (rgbMat, " " + frontalFaceChecker.GetFrontalFaceRate (landmarkPoints [i]), new Point (rect.xMin, rect.yMin - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar (255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
                    }
                }

                //Imgproc.putText (rgbMat, "W:" + rgbMat.width () + " H:" + rgbMat.height () + " SO:" + Screen.orientation, new Point (5, rgbMat.rows () - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar (255, 255, 255, 255), 1, Imgproc.LINE_AA, false);

                OpenCVForUnity.UnityUtils.Utils.fastMatToTexture2D(rgbMat, texture);
            }
        }
        // Update is called once per frame
        void Update()
        {
            if (!sourceToMatHelper.IsInitialized())
            {
                return;
            }

#if ((UNITY_ANDROID || UNITY_IOS) && !UNITY_EDITOR)
            //Touch
            int touchCount = Input.touchCount;
            if (touchCount == 1)
            {
                Touch t = Input.GetTouch(0);
                if (t.phase == TouchPhase.Ended && !EventSystem.current.IsPointerOverGameObject(t.fingerId))
                {
                    storedTouchPoint = new Point(t.position.x, t.position.y);
                    //Debug.Log ("touch X " + t.position.x);
                    //Debug.Log ("touch Y " + t.position.y);
                }
            }
#else
            //Mouse
            if (Input.GetMouseButtonUp(0) && !EventSystem.current.IsPointerOverGameObject())
            {
                storedTouchPoint = new Point(Input.mousePosition.x, Input.mousePosition.y);
                //Debug.Log ("mouse X " + Input.mousePosition.x);
                //Debug.Log ("mouse Y " + Input.mousePosition.y);
            }
#endif

            if (selectedPointList.Count != 1)
            {
                if (!sourceToMatHelper.IsPlaying())
                {
                    sourceToMatHelper.Play();
                }

                if (sourceToMatHelper.IsPlaying() && sourceToMatHelper.DidUpdateThisFrame())
                {
                    Mat rgbMat = sourceToMatHelper.GetMat();

                    if (storedTouchPoint != null)
                    {
                        ConvertScreenPointToTexturePoint(storedTouchPoint, storedTouchPoint, gameObject, texture.width, texture.height);
                        OnTouch(storedTouchPoint, texture.width, texture.height);
                        storedTouchPoint = null;
                    }

                    if (selectedPointList.Count == 1)
                    {
                        foreach (var point in selectedPointList)
                        {
                            Imgproc.circle(rgbMat, point, 6, new Scalar(0, 0, 255), 2);
                        }
                    }
                    else if (selectedPointList.Count == 2)
                    {
                        using (MatOfPoint selectedPointMat = new MatOfPoint(selectedPointList.ToArray()))
                        {
                            // add tracker.
                            OpenCVForUnity.CoreModule.Rect region = Imgproc.boundingRect(selectedPointMat);
                            trackers.add(TrackerKCF.create(), rgbMat, new Rect2d(region.x, region.y, region.width, region.height));
                        }

                        selectedPointList.Clear();
                        trackingColorList.Add(new Scalar(UnityEngine.Random.Range(0, 255), UnityEngine.Random.Range(0, 255), UnityEngine.Random.Range(0, 255)));
                    }


                    trackers.update(rgbMat, objects);

                    // draw tracked objects regions.
                    Rect2d[] objectsArray = objects.toArray();
                    for (int i = 0; i < objectsArray.Length; i++)
                    {
                        Imgproc.rectangle(rgbMat, objectsArray[i].tl(), objectsArray[i].br(), trackingColorList[i], 2, 1, 0);
                    }


                    if (selectedPointList.Count != 1)
                    {
                        //Imgproc.putText (rgbMat, "Please touch the screen, and select tracking regions.", new Point (5, rgbMat.rows () - 10), Core.FONT_HERSHEY_SIMPLEX, 0.8, new Scalar (255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
                        if (fpsMonitor != null)
                        {
                            fpsMonitor.consoleText = "Please touch the screen, and select tracking regions.";
                        }
                    }
                    else
                    {
                        //Imgproc.putText (rgbMat, "Please select the end point of the new tracking region.", new Point (5, rgbMat.rows () - 10), Core.FONT_HERSHEY_SIMPLEX, 0.8, new Scalar (255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
                        if (fpsMonitor != null)
                        {
                            fpsMonitor.consoleText = "Please select the end point of the new tracking region.";
                        }
                    }

                    Utils.fastMatToTexture2D(rgbMat, texture);
                }
            }
            else
            {
                if (sourceToMatHelper.IsPlaying())
                {
                    sourceToMatHelper.Pause();
                }

                if (storedTouchPoint != null)
                {
                    ConvertScreenPointToTexturePoint(storedTouchPoint, storedTouchPoint, gameObject, texture.width, texture.height);
                    OnTouch(storedTouchPoint, texture.width, texture.height);
                    storedTouchPoint = null;
                }
            }
        }
        // Update is called once per frame
        void Update()
        {
            if (sourceToMatHelper.IsPlaying() && sourceToMatHelper.DidUpdateThisFrame())
            {
                Mat rgbMat = sourceToMatHelper.GetMat();

                OpenCVForUnityUtils.SetImage(faceLandmarkDetector, rgbMat);

                //detect face rects
                List <UnityEngine.Rect> detectResult = faceLandmarkDetector.Detect();

                UnityEngine.Rect rect   = new UnityEngine.Rect();
                List <Vector2>   points = null;
                if (detectResult.Count > 0)
                {
                    rect = detectResult[0];

                    //detect landmark points
                    points = faceLandmarkDetector.DetectLandmark(rect);

                    skippedFrames = 0;
                }
                else
                {
                    skippedFrames++;
                    if (skippedFrames == maximumAllowedSkippedFrames)
                    {
                        if (drawLowPassFilter)
                        {
                            lowPassFilter.Reset();
                        }
                        if (drawKalmanFilter)
                        {
                            kalmanFilter.Reset();
                        }
                        if (drawOpticalFlowFilter)
                        {
                            opticalFlowFilter.Reset();
                        }
                        if (drawOFAndLPFilter)
                        {
                            opticalFlowFilter.Reset();
                        }
                        lowPassFilter.Reset();
                    }
                }

                if (drawLowPassFilter)
                {
                    lowPassFilter.Process(rgbMat, points, lowPassFilteredPoints, isDebugMode);
                }
                if (drawKalmanFilter)
                {
                    kalmanFilter.Process(rgbMat, points, kalmanFilteredPoints, isDebugMode);
                }
                if (drawOpticalFlowFilter)
                {
                    opticalFlowFilter.Process(rgbMat, points, opticalFlowFilteredPoints, isDebugMode);
                }
                if (drawOFAndLPFilter)
                {
                    opticalFlowFilter.Process(rgbMat, points, points, false);
                    lowPassFilter.Process(rgbMat, points, ofAndLPFilteredPoints, isDebugMode);
                }


                if (points != null && !isDebugMode)
                {
                    // draw raw landmark points.
                    OpenCVForUnityUtils.DrawFaceLandmark(rgbMat, points, new Scalar(0, 255, 0), 2);
                }

                // draw face rect.
                //OpenCVForUnityUtils.DrawFaceRect (rgbMat, rect, new Scalar (255, 0, 0), 2);

                // draw filtered lam points.
                if (points != null && !isDebugMode)
                {
                    if (drawLowPassFilter)
                    {
                        OpenCVForUnityUtils.DrawFaceLandmark(rgbMat, lowPassFilteredPoints, new Scalar(0, 255, 255), 2);
                    }
                    if (drawKalmanFilter)
                    {
                        OpenCVForUnityUtils.DrawFaceLandmark(rgbMat, kalmanFilteredPoints, new Scalar(0, 0, 255), 2);
                    }
                    if (drawOpticalFlowFilter)
                    {
                        OpenCVForUnityUtils.DrawFaceLandmark(rgbMat, opticalFlowFilteredPoints, new Scalar(255, 0, 0), 2);
                    }
                    if (drawOFAndLPFilter)
                    {
                        OpenCVForUnityUtils.DrawFaceLandmark(rgbMat, ofAndLPFilteredPoints, new Scalar(255, 0, 255), 2);
                    }
                }

                //Imgproc.putText (rgbMat, "W:" + rgbMat.width () + " H:" + rgbMat.height () + " SO:" + Screen.orientation, new Point (5, rgbMat.rows () - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar (255, 255, 255), 1, Imgproc.LINE_AA, false);

                Utils.fastMatToTexture2D(rgbMat, texture);
            }
        }
        // Update is called once per frame
        void Update()
        {
            if (sourceToMatHelper.IsPlaying() && sourceToMatHelper.DidUpdateThisFrame())
            {
                Mat rgbMat = sourceToMatHelper.GetMat();

                // detect faces.
                List <Rect> detectResult = new List <Rect>();
                if (useDlibFaceDetecter)
                {
                    OpenCVForUnityUtils.SetImage(faceLandmarkDetector, rgbMat);
                    List <UnityEngine.Rect> result = faceLandmarkDetector.Detect();

                    foreach (var unityRect in result)
                    {
                        detectResult.Add(new Rect((int)unityRect.x, (int)unityRect.y, (int)unityRect.width, (int)unityRect.height));
                    }
                }
                else
                {
                    // convert image to greyscale.
                    Imgproc.cvtColor(rgbMat, grayMat, Imgproc.COLOR_RGB2GRAY);

                    using (Mat equalizeHistMat = new Mat())
                        using (MatOfRect faces = new MatOfRect())
                        {
                            Imgproc.equalizeHist(grayMat, equalizeHistMat);

                            cascade.detectMultiScale(equalizeHistMat, faces, 1.1f, 2, 0 | Objdetect.CASCADE_SCALE_IMAGE, new Size(equalizeHistMat.cols() * 0.15, equalizeHistMat.cols() * 0.15), new Size());

                            detectResult = faces.toList();
                        }

                    // corrects the deviation of a detection result between OpenCV and Dlib.
                    foreach (Rect r in detectResult)
                    {
                        r.y += (int)(r.height * 0.1f);
                    }
                }


                // face tracking.
                rectangleTracker.UpdateTrackedObjects(detectResult);
                List <TrackedRect> trackedRects = new List <TrackedRect>();
                rectangleTracker.GetObjects(trackedRects, true);

                // create noise filter.
                foreach (var openCVRect in trackedRects)
                {
                    if (openCVRect.state == TrackedState.NEW)
                    {
                        if (!lowPassFilterDict.ContainsKey(openCVRect.id))
                        {
                            lowPassFilterDict.Add(openCVRect.id, new LowPassPointsFilter((int)faceLandmarkDetector.GetShapePredictorNumParts()));
                        }
                        if (!opticalFlowFilterDict.ContainsKey(openCVRect.id))
                        {
                            opticalFlowFilterDict.Add(openCVRect.id, new OFPointsFilter((int)faceLandmarkDetector.GetShapePredictorNumParts()));
                        }
                    }
                    else if (openCVRect.state == TrackedState.DELETED)
                    {
                        if (lowPassFilterDict.ContainsKey(openCVRect.id))
                        {
                            lowPassFilterDict[openCVRect.id].Dispose();
                            lowPassFilterDict.Remove(openCVRect.id);
                        }
                        if (opticalFlowFilterDict.ContainsKey(openCVRect.id))
                        {
                            opticalFlowFilterDict[openCVRect.id].Dispose();
                            opticalFlowFilterDict.Remove(openCVRect.id);
                        }
                    }
                }

                // create LUT texture.
                foreach (var openCVRect in trackedRects)
                {
                    if (openCVRect.state == TrackedState.NEW)
                    {
                        faceMaskColorCorrector.CreateLUTTex(openCVRect.id);
                    }
                    else if (openCVRect.state == TrackedState.DELETED)
                    {
                        faceMaskColorCorrector.DeleteLUTTex(openCVRect.id);
                    }
                }

                // detect face landmark points.
                OpenCVForUnityUtils.SetImage(faceLandmarkDetector, rgbMat);
                List <List <Vector2> > landmarkPoints = new List <List <Vector2> >();
                for (int i = 0; i < trackedRects.Count; i++)
                {
                    TrackedRect      tr   = trackedRects[i];
                    UnityEngine.Rect rect = new UnityEngine.Rect(tr.x, tr.y, tr.width, tr.height);

                    List <Vector2> points = faceLandmarkDetector.DetectLandmark(rect);

                    // apply noise filter.
                    if (enableNoiseFilter)
                    {
                        if (tr.state > TrackedState.NEW && tr.state < TrackedState.DELETED)
                        {
                            opticalFlowFilterDict[tr.id].Process(rgbMat, points, points);
                            lowPassFilterDict[tr.id].Process(rgbMat, points, points);
                        }
                    }

                    landmarkPoints.Add(points);
                }

                // face masking.
                if (faceMaskTexture != null && landmarkPoints.Count >= 1)
                { // Apply face masking between detected faces and a face mask image.
                    float maskImageWidth  = faceMaskTexture.width;
                    float maskImageHeight = faceMaskTexture.height;

                    TrackedRect tr;

                    for (int i = 0; i < trackedRects.Count; i++)
                    {
                        tr = trackedRects[i];

                        if (tr.state == TrackedState.NEW)
                        {
                            meshOverlay.CreateObject(tr.id, faceMaskTexture);
                        }
                        if (tr.state < TrackedState.DELETED)
                        {
                            MaskFace(meshOverlay, tr, landmarkPoints[i], faceLandmarkPointsInMask, maskImageWidth, maskImageHeight);

                            if (enableColorCorrection)
                            {
                                CorrectFaceMaskColor(tr.id, faceMaskMat, rgbMat, faceLandmarkPointsInMask, landmarkPoints[i]);
                            }
                        }
                        else if (tr.state == TrackedState.DELETED)
                        {
                            meshOverlay.DeleteObject(tr.id);
                        }
                    }
                }
                else if (landmarkPoints.Count >= 1)
                { // Apply face masking between detected faces.
                    float maskImageWidth  = texture.width;
                    float maskImageHeight = texture.height;

                    TrackedRect tr;

                    for (int i = 0; i < trackedRects.Count; i++)
                    {
                        tr = trackedRects[i];

                        if (tr.state == TrackedState.NEW)
                        {
                            meshOverlay.CreateObject(tr.id, texture);
                        }
                        if (tr.state < TrackedState.DELETED)
                        {
                            MaskFace(meshOverlay, tr, landmarkPoints[i], landmarkPoints[0], maskImageWidth, maskImageHeight);

                            if (enableColorCorrection)
                            {
                                CorrectFaceMaskColor(tr.id, rgbMat, rgbMat, landmarkPoints[0], landmarkPoints[i]);
                            }
                        }
                        else if (tr.state == TrackedState.DELETED)
                        {
                            meshOverlay.DeleteObject(tr.id);
                        }
                    }
                }

                // draw face rects.
                if (displayFaceRects)
                {
                    for (int i = 0; i < detectResult.Count; i++)
                    {
                        UnityEngine.Rect rect = new UnityEngine.Rect(detectResult[i].x, detectResult[i].y, detectResult[i].width, detectResult[i].height);
                        OpenCVForUnityUtils.DrawFaceRect(rgbMat, rect, new Scalar(255, 0, 0, 255), 2);
                    }

                    for (int i = 0; i < trackedRects.Count; i++)
                    {
                        UnityEngine.Rect rect = new UnityEngine.Rect(trackedRects[i].x, trackedRects[i].y, trackedRects[i].width, trackedRects[i].height);
                        OpenCVForUnityUtils.DrawFaceRect(rgbMat, rect, new Scalar(255, 255, 0, 255), 2);
                        //Imgproc.putText (rgbMat, " " + frontalFaceChecker.GetFrontalFaceAngles (landmarkPoints [i]), new Point (rect.xMin, rect.yMin - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar (255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
                        //Imgproc.putText (rgbMat, " " + frontalFaceChecker.GetFrontalFaceRate (landmarkPoints [i]), new Point (rect.xMin, rect.yMin - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar (255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
                    }
                }

                // draw face points.
                if (displayDebugFacePoints)
                {
                    for (int i = 0; i < landmarkPoints.Count; i++)
                    {
                        OpenCVForUnityUtils.DrawFaceLandmark(rgbMat, landmarkPoints[i], new Scalar(0, 255, 0, 255), 2);
                    }
                }


                // display face mask image.
                if (faceMaskTexture != null && faceMaskMat != null)
                {
                    if (displayFaceRects)
                    {
                        OpenCVForUnityUtils.DrawFaceRect(faceMaskMat, faceRectInMask, new Scalar(255, 0, 0, 255), 2);
                    }
                    if (displayDebugFacePoints)
                    {
                        OpenCVForUnityUtils.DrawFaceLandmark(faceMaskMat, faceLandmarkPointsInMask, new Scalar(0, 255, 0, 255), 2);
                    }

                    float scale = (rgbMat.width() / 4f) / faceMaskMat.width();
                    float tx    = rgbMat.width() - faceMaskMat.width() * scale;
                    float ty    = 0.0f;
                    Mat   trans = new Mat(2, 3, CvType.CV_32F);//1.0, 0.0, tx, 0.0, 1.0, ty);
                    trans.put(0, 0, scale);
                    trans.put(0, 1, 0.0f);
                    trans.put(0, 2, tx);
                    trans.put(1, 0, 0.0f);
                    trans.put(1, 1, scale);
                    trans.put(1, 2, ty);

                    Imgproc.warpAffine(faceMaskMat, rgbMat, trans, rgbMat.size(), Imgproc.INTER_LINEAR, Core.BORDER_TRANSPARENT, new Scalar(0));

                    if (displayFaceRects || displayDebugFacePointsToggle)
                    {
                        OpenCVForUnity.UnityUtils.Utils.texture2DToMat(faceMaskTexture, faceMaskMat);
                    }
                }

                //Imgproc.putText (rgbMat, "W:" + rgbMat.width () + " H:" + rgbMat.height () + " SO:" + Screen.orientation, new Point (5, rgbMat.rows () - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar (255, 255, 255, 255), 1, Imgproc.LINE_AA, false);

                OpenCVForUnity.UnityUtils.Utils.fastMatToTexture2D(rgbMat, texture);
            }
        }
        // Update is called once per frame
        void Update()
        {
            if (sourceToMatHelper.IsPlaying() && sourceToMatHelper.DidUpdateThisFrame())
            {
                Mat rgbMat = sourceToMatHelper.GetMat();

                OpenCVForUnityUtils.SetImage(faceLandmarkDetector, rgbMat);

                //detect face rects
                List <UnityEngine.Rect> detectResult = faceLandmarkDetector.Detect();

                if (detectResult.Count > 0)
                {
                    //detect landmark points
                    List <Vector2> points = faceLandmarkDetector.DetectLandmark(detectResult[0]);

                    if (displayFacePoints)
                    {
                        OpenCVForUnityUtils.DrawFaceLandmark(rgbMat, points, new Scalar(0, 255, 0), 2);
                    }

                    MatOfPoint3f objectPoints   = null;
                    bool         isRightEyeOpen = false;
                    bool         isLeftEyeOpen  = false;
                    bool         isMouthOpen    = false;
                    if (points.Count == 68)
                    {
                        objectPoints = objectPoints68;

                        imagePoints.fromArray(
                            new Point((points[38].x + points[41].x) / 2, (points[38].y + points[41].y) / 2), //l eye (Interpupillary breadth)
                            new Point((points[43].x + points[46].x) / 2, (points[43].y + points[46].y) / 2), //r eye (Interpupillary breadth)
                            new Point(points[30].x, points[30].y),                                           //nose (Tip)
                            new Point(points[33].x, points[33].y),                                           //nose (Subnasale)
                            new Point(points[0].x, points[0].y),                                             //l ear (Bitragion breadth)
                            new Point(points[16].x, points[16].y)                                            //r ear (Bitragion breadth)
                            );

                        if (Mathf.Abs((float)(points[43].y - points[46].y)) > Mathf.Abs((float)(points[42].x - points[45].x)) / 5.0)
                        {
                            isRightEyeOpen = true;
                        }

                        if (Mathf.Abs((float)(points[38].y - points[41].y)) > Mathf.Abs((float)(points[39].x - points[36].x)) / 5.0)
                        {
                            isLeftEyeOpen = true;
                        }

                        float noseDistance  = Mathf.Abs((float)(points[27].y - points[33].y));
                        float mouseDistance = Mathf.Abs((float)(points[62].y - points[66].y));
                        if (mouseDistance > noseDistance / 5.0)
                        {
                            isMouthOpen = true;
                        }
                        else
                        {
                            isMouthOpen = false;
                        }
                    }
                    else if (points.Count == 17)
                    {
                        objectPoints = objectPoints17;

                        imagePoints.fromArray(
                            new Point((points[2].x + points[3].x) / 2, (points[2].y + points[3].y) / 2), //l eye (Interpupillary breadth)
                            new Point((points[4].x + points[5].x) / 2, (points[4].y + points[5].y) / 2), //r eye (Interpupillary breadth)
                            new Point(points[0].x, points[0].y),                                         //nose (Tip)
                            new Point(points[1].x, points[1].y),                                         //nose (Subnasale)
                            new Point(points[6].x, points[6].y),                                         //l ear (Bitragion breadth)
                            new Point(points[8].x, points[8].y)                                          //r ear (Bitragion breadth)
                            );

                        if (Mathf.Abs((float)(points[11].y - points[12].y)) > Mathf.Abs((float)(points[4].x - points[5].x)) / 5.0)
                        {
                            isRightEyeOpen = true;
                        }

                        if (Mathf.Abs((float)(points[9].y - points[10].y)) > Mathf.Abs((float)(points[2].x - points[3].x)) / 5.0)
                        {
                            isLeftEyeOpen = true;
                        }

                        float noseDistance  = Mathf.Abs((float)(points[3].y - points[1].y));
                        float mouseDistance = Mathf.Abs((float)(points[14].y - points[16].y));
                        if (mouseDistance > noseDistance / 2.0)
                        {
                            isMouthOpen = true;
                        }
                        else
                        {
                            isMouthOpen = false;
                        }
                    }
                    else if (points.Count == 6)
                    {
                        objectPoints = objectPoints6;

                        imagePoints.fromArray(
                            new Point((points[2].x + points[3].x) / 2, (points[2].y + points[3].y) / 2), //l eye (Interpupillary breadth)
                            new Point((points[4].x + points[5].x) / 2, (points[4].y + points[5].y) / 2), //r eye (Interpupillary breadth)
                            new Point(points[0].x, points[0].y),                                         //nose (Tip)
                            new Point(points[1].x, points[1].y)                                          //nose (Subnasale)
                            );
                    }
                    else if (points.Count == 5)
                    {
                        objectPoints = objectPoints5;

                        imagePoints.fromArray(
                            new Point(points[3].x, points[3].y), //l eye (Inner corner of the eye)
                            new Point(points[1].x, points[1].y), //r eye (Inner corner of the eye)
                            new Point(points[2].x, points[2].y), //l eye (Tail of the eye)
                            new Point(points[0].x, points[0].y), //r eye (Tail of the eye)
                            new Point(points[4].x, points[4].y)  //nose (Nose top)
                            );

                        if (fpsMonitor != null)
                        {
                            fpsMonitor.consoleText = "This example supports mainly the face landmark points of 68 points.";
                        }
                    }

                    // estimate head pose
                    if (rvec == null || tvec == null)
                    {
                        rvec = new Mat(3, 1, CvType.CV_64FC1);
                        tvec = new Mat(3, 1, CvType.CV_64FC1);
                        Calib3d.solvePnP(objectPoints, imagePoints, camMatrix, distCoeffs, rvec, tvec);
                    }


                    double tvec_x = tvec.get(0, 0)[0], tvec_y = tvec.get(1, 0)[0], tvec_z = tvec.get(2, 0)[0];

                    bool    isNotInViewport = false;
                    Vector4 pos             = VP * new Vector4((float)tvec_x, (float)tvec_y, (float)tvec_z, 1.0f);
                    if (pos.w != 0)
                    {
                        float x = pos.x / pos.w, y = pos.y / pos.w, z = pos.z / pos.w;
                        if (x < -1.0f || x > 1.0f || y < -1.0f || y > 1.0f || z < -1.0f || z > 1.0f)
                        {
                            isNotInViewport = true;
                        }
                    }

                    if (double.IsNaN(tvec_z) || isNotInViewport)
                    { // if tvec is wrong data, do not use extrinsic guesses. (the estimated object is not in the camera field of view)
                        Calib3d.solvePnP(objectPoints, imagePoints, camMatrix, distCoeffs, rvec, tvec);
                    }
                    else
                    {
                        Calib3d.solvePnP(objectPoints, imagePoints, camMatrix, distCoeffs, rvec, tvec, true, Calib3d.SOLVEPNP_ITERATIVE);
                    }

                    //Debug.Log (tvec.dump());

                    if (!isNotInViewport)
                    {
                        // Display effects.
                        if (displayHead)
                        {
                            head.SetActive(true);
                        }
                        if (displayAxes)
                        {
                            axes.SetActive(true);
                        }

                        if (displayEffects)
                        {
                            rightEye.SetActive(isRightEyeOpen);
                            leftEye.SetActive(isLeftEyeOpen);

                            if (isMouthOpen)
                            {
                                mouth.SetActive(true);
                                foreach (ParticleSystem ps in mouthParticleSystem)
                                {
                                    var em = ps.emission;
                                    em.enabled = true;
#if UNITY_5_5_OR_NEWER
                                    var main = ps.main;
                                    main.startSizeMultiplier = 20;
#else
                                    ps.startSize = 20;
#endif
                                }
                            }
                            else
                            {
                                foreach (ParticleSystem ps in mouthParticleSystem)
                                {
                                    var em = ps.emission;
                                    em.enabled = false;
                                }
                            }
                        }

                        // Convert to unity pose data.
                        double[] rvecArr = new double[3];
                        rvec.get(0, 0, rvecArr);
                        double[] tvecArr = new double[3];
                        tvec.get(0, 0, tvecArr);
                        PoseData poseData = ARUtils.ConvertRvecTvecToPoseData(rvecArr, tvecArr);

                        // Changes in pos/rot below these thresholds are ignored.
                        if (enableLowPassFilter)
                        {
                            ARUtils.LowpassPoseData(ref oldPoseData, ref poseData, positionLowPass, rotationLowPass);
                        }
                        oldPoseData = poseData;

                        // Create transform matrix.
                        transformationM = Matrix4x4.TRS(poseData.pos, poseData.rot, Vector3.one);
                    }


                    // right-handed coordinates system (OpenCV) to left-handed one (Unity)
                    // https://stackoverflow.com/questions/30234945/change-handedness-of-a-row-major-4x4-transformation-matrix
                    ARM = invertYM * transformationM * invertYM;

                    // Apply Y-axis and Z-axis refletion matrix. (Adjust the posture of the AR object)
                    ARM = ARM * invertYM * invertZM;

                    if (shouldMoveARCamera)
                    {
                        ARM = ARGameObject.transform.localToWorldMatrix * ARM.inverse;
                        ARUtils.SetTransformFromMatrix(ARCamera.transform, ref ARM);
                    }
                    else
                    {
                        ARM = ARCamera.transform.localToWorldMatrix * ARM;
                        ARUtils.SetTransformFromMatrix(ARGameObject.transform, ref ARM);
                    }
                }

                //Imgproc.putText (rgbMat, "W:" + rgbMat.width () + " H:" + rgbMat.height () + " SO:" + Screen.orientation, new Point (5, rgbMat.rows () - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.5, new Scalar (255, 255, 255), 1, Imgproc.LINE_AA, false);

                Utils.fastMatToTexture2D(rgbMat, texture);
            }
        }