OnVuforiaStarted

private void OnVuforiaStarted()
        {
            CameraDevice.Instance.SetFrameFormat(mPixelFormat, true);
            CameraDevice.Instance.SetFocusMode(
                CameraDevice.FocusMode.FOCUS_MODE_CONTINUOUSAUTO);
            //Vuforia.Image arCamera = CameraDevice.Instance.GetCameraImage(mPixelFormat);
            imageVuforia = CameraDevice.Instance.GetCameraImage(mPixelFormat);

            Mat webCamTextureMat = matFromBytes(imageVuforia.Height, imageVuforia.Width, imageVuforia.Pixels, false, CvType.CV_8UC2);
            texture = new Texture2D (webCamTextureMat.cols (), webCamTextureMat.rows (), TextureFormat.RGBA32, false);
            gameObject.GetComponent<Renderer> ().material.mainTexture = texture;

            gameObject.transform.localScale = new Vector3 (webCamTextureMat.cols (), webCamTextureMat.rows (), 1);

             if (fpsMonitor != null) {
                fpsMonitor.Add ("width", webCamTextureMat.width ().ToString ());
                fpsMonitor.Add ("height", webCamTextureMat.height ().ToString ());
                fpsMonitor.Add ("orientation", Screen.orientation.ToString ());
                fpsMonitor.consoleText = "Please touch the area of the open hand.";
            }


            float width = webCamTextureMat.width ();
            float height = webCamTextureMat.height ();

            float widthScale = (float)Screen.width / width;
            float heightScale = (float)Screen.height / height;
            if (widthScale < heightScale) {
                Camera.main.orthographicSize = (width * (float)Screen.height / (float)Screen.width) / 2;
            } else {
                Camera.main.orthographicSize = height / 2;
            }

            detector = new ColorBlobDetector ();
            spectrumMat = new Mat ();
            //blobColorRgba = new Scalar (255);
            blobColorHsv = new Scalar (255);
            SPECTRUM_SIZE = new Size (200, 64);
            CONTOUR_COLOR = new Scalar (255, 0, 0, 255);
            CONTOUR_COLOR_WHITE = new Scalar (255, 255, 255, 255);


        }

        public static Mat matFromBytes(int mFrameWidth, int mFrameHeight, byte[] data, bool grey, int type) {
        // XXX: lo que aun no se bien es porque al crear el mat le da mayor
        // altura que el valor original.
        /*
        CustomLog.d("matFromBytes", "CvType.CV_8UC1 = " + CvType.CV_8UC1);
        CustomLog.d("matFromBytes", "CvType.CV_8UC2 = " + CvType.CV_8UC2);
        CustomLog.d("matFromBytes", "CvType.CV_8UC3 = " + CvType.CV_8UC3);
        CustomLog.d("matFromBytes", "CvType.CV_8UC4 = " + CvType.CV_8UC4);
        */
        // CV_8UC1 = grey
        // CV_8UC4 = RGBA
        // CV_8UC2 = RGB565
        if (type == -1)
            type = CvType.CV_8UC2;

        //int type = CvType.CV_8UC3;
        //int type = 16;
        if (grey)
            type = CvType.CV_8UC1;

        //Mat m = new Mat(mFrameHeight + (mFrameHeight / 2), mFrameWidth, type);
        //CustomLog.d(LOG_TAG, "matFromBytes - height = " + mFrameHeight + " - width = " + mFrameWidth + " - data len = " + data.length);
        Mat m = new Mat(mFrameHeight, mFrameWidth, type);
        m.put(0, 0, data);
        return m;
    }