Use Real-Time Insight mode

An example of using Real-Time Insight mode might be a coach and an athlete who want to review performance data together over multiple trials on an iOS device, then have the coach send the athlete a report of what was reviewed.

Note that as data is streamed over Bluetooth^®, external factors can cause dropped samples. If this is an issue, you can either interpolate between samples or use To Sensor mode instead, to avoid dropped samples altogether.

 Watch the Vicon video, Using Real-Time Insight on YouTube.

Summary of Real-Time Insight mode

To use Real-Time Insight mode:

1. Open the Capture.U app.
2. In the Visualize section tap Real-Time Insight.

3. At the bottom of the screen, select either Acceleration (x, y, z, or Resultant and Low g or High g) or Rotation (x, y, or z).

   Note that Resultant is the peak resultant acceleration, which is calculated by

    

   With the High g accelerometer selected, the resultant acceleration can reach up to 346 G.

   With the the Low g accelerometer selected, the resultant acceleration can reach up to 26 G.

   To enable Global Angles, select Rotation and ensure Global is selected.

    

   Global angles are streamed in real time on the graph. They are visualized as Euler angles (XYZ rotation order) and exported as helical angles, Euler angles and quaternion components (Qx, Qy, Qz, Qr).

   Note that when Global Angles is selected,  Low g Accelerometer, Gyroscope, and Magnetometer are also collected and the capture rate is reduced to 225 Hz (A, G) 70 Hz (M) for the Low g sensor.

4. At the bottom left of the screen, tap Select Sensors.

    

   While you are selecting sensors, if you chose to collect Global Angles, one or more of the sensors may be displayed with a 'Require calibration' icon  or a 'Calibrated' icon  at its top right. For further explanation, see Step 6.

5. Select up to two sensors (for details, see Capture to sensor, Step 7), and then tap Set.

    
   You can edit the name of any sensor in this list by swiping left on the specific sensor and selecting Edit Name. For more instructions, see Manage sensor names.

6. At the bottom of the screen, tap Start.

   If you chose to collect Global Angles: 

   1. If one or more of the selected sensors requires calibration, after you tap Start to start collection, on the next screen, a message at the the bottom of the screen prompts you to begin calibration when the trial starts.
   2. Calibrate any sensors that are uncalibrated. For more information on calibration, see Calibrate IMUs.
   3. When you've finished moving the sensor, to verify your calibration, check that the graphs for all three axes are now at zero.
7. To play a sound when a specified level is reached, in the Benchmarks area, enter the required values in the benchmark fields.
   The values are indicated by a shaded area on the graph.

8. To view and optionally record real-time video (recorded at 1920 x 1080), tap the Video icon at the top right of the screen.
   The graph is overlaid on the video. To make the graph easier to see, the controls at the top of the screen enable you to change the thickness of the lines (slide right to increase line thickness), the opacity of the graph, and select a dark or light version.

      

9. To see statistics in real time, tap the Statistics icon , towards the bottom right of the screen.

   The minimum and maximum values detected by the sensors are displayed, in addition to how many times the benchmark values have been reached.

    

10. When you have collected the required movement, tap Stop. 
11. From the export icons, select the required export type (file or video):
    

    • To save a video to your device, tap the Video icon (top right) and then tap Save.

       

      Depending on the length of your video, this may take some time. Don't tap Save again, but wait until the video is saved.

      Tip: Find saved videos on the Photos tab in the Photos app .

    • To export either a report (.pdf) or data (.csv), or to browse previously recorded videos, tap the File icon (top right).

       

      • If you choose Export to PDF, you can add a title in the PDF preview that is displayed.
        The preview shows the information that will be displayed in the exported PDF, with statistics information at the top of the page, a Focused view of the graph (showing the region of interest) and Full Range view (showing the whole range). This lets you check that the graph is as required before you export it. If it isn't, tap Cancel, change the Acceleration and/or Rotation to show a graph of the required view (X, Y, Z, or Resultant) and tap Export to PDF again.

        When you're happy with the preview, tap Export at the top to export the PDF.

          

      • If you choose Export to CSV, the data values exported can be X, Y and Z, but not Resultant.

        If you export Global Angles, the data is exported as helical angles, Euler angles and quarternion components (Qx, Qy, Qz, Qr).

        

        Tip: If either Low g or Gyroscope is selected, both Low g and Gyroscope are exported.
         Note: In Capture.U 1.4.1 and later, Euler angles are present as an additional three columns.

      • If you choose Browse Video, previously collected Real-Time Insight videos are listed.
        Tap to select a video, then play a minimized preview by tapping the Play icon at the bottom, or tap Use at the top right to play in full-screen mode. 

Protect collected data

In Capture.U 1.4.1 or later, if you have collected data, Real-Time Insight prompts you to export your data before collecting a new trial or navigating back to the home page.

Select the required option:

• To continue with the current action, tap OK.
  This will result in you losing the current collected data.
• To terminate the current action, tap Cancel.
  This retains the current collected data.