Android Phones for Service Fault Call

Discussion in 'Rules / Tournament Regulation / Officiating' started by pcll99, Sep 17, 2023.

  1. pcll99

    pcll99 Regular Member

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    I am having a second thought on the beauty contest.

    I think it is better to have a Service Fault Call App Writing Competition (or SEFAUCAW) instead. There are many badminton fans all over the world who can write Android apps.

    The winner of the SEFAUCAW competition gets US$5000, the first runner-up $3000 and the second runner-up $1000.

    After BWF have selected the right app, they then ask the smartphone company to sponsor the hardwares.

    How about that?
     
    #21 pcll99, Jan 27, 2024
    Last edited: Jan 27, 2024
  2. whatsthecallUmp

    whatsthecallUmp Regular Member

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    Methinks, all the six points should be awarded to you. That is, pcll99 6 : 0 BWF

    No seriously, these could easily be implemented at club-level to find how feasible it is to do simple stuff.

    For starters, set your mobile during one of those club scrimmages on a fixed stand, and set it to record, or live stream on large overhead display courtside.

    No need for any app at this 'pilot' stage, as you can place a ribbon/string on the display at the legal service height.

    If your club is willing to let you do this, you can scale-up the technique when approaching local or regional tournament organisers, sponsors, or venture capitalists.

    You would find how easy, or difficult, it is.

    Report here with your findings and observations.
     
  3. pcll99

    pcll99 Regular Member

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    thanks @whatsthecallUmp

    (a) I don't have those slow-mo smartphones. They can record video at 240fps. Samsung S9, S10, S20 and later can shoot those videos.

    (b) It would be great if people with Samsung S9, S10, S20 or later can record videos while people are serving, in a variety of contexts (eg, forehand, backhand, singles, mixed doubles). Post them here.

    (c) As for casting your phone to a TV or laptop, should we use miracast, chromecast or something else? over Wifi, over LAN, over USB cable?

    (d) I think you need a pair of bluetooth keyboard and mouse to control the smartphone; I don't think you should handle your smartphone with your hands while it is recording in slow motion.

    (e) can the laptop record and instant replay the video?

    (f) can the laptop instant replay in slow motion?

    thanks.
     
    #23 pcll99, Feb 24, 2024
    Last edited: Feb 27, 2024
  4. pcll99

    pcll99 Regular Member

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    Xiaomi 14 Ultra and Samsung S24 Ultra can cast over USB cable!
     
  5. thyrif

    thyrif Regular Member

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    Why can't we use this? (Or an invisible one that only shows up on camera). If the line hits the shuttle before striking it's pretty visible.

    [​IMG]
     
    Cheung likes this.
  6. pcll99

    pcll99 Regular Member

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    thanks @thyrif

    can you elaborate on that please?
     
  7. thyrif

    thyrif Regular Member

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    Light in infrared range shows up on most cameras, but is invisible for human eyes.
    But for club use it could be a normal visible one that has a switch to turn off after the serve.
     
  8. pcll99

    pcll99 Regular Member

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    thanks.

    or use a pair of blinkers, covering both sides of the laser level, like horse's blinkers.

    so that the laser beam appearing on the player's jersey is very narrowly focused on him or her only.
     
    #28 pcll99, Mar 2, 2024
    Last edited: Mar 2, 2024
  9. pcll99

    pcll99 Regular Member

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    nvidia jetson nano can do detect objects in 10 lines of python code!

     
  10. pcll99

    pcll99 Regular Member

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    Apple Vision Pro seems feasible.

    it can understand gestures.

    how about other Mixed Reality or Augmented Reality glasses / headsets?
     
    #30 pcll99, Mar 16, 2024
    Last edited: Mar 17, 2024
  11. Cheung

    Cheung Moderator

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    Need to cover the flashlight on mobile phones
     
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  12. pcll99

    pcll99 Regular Member

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    i found a few solutions for gesture recognition:

    (a) MediaPipe, gesture recognition for Android

    https://developers.google.com/mediapipe/solutions/vision/gesture_recognizer/android

    https://github.com/google/mediapipe

    (b) Astra S Somatosensory Depth Camera Face/Gesture Recognition ROS Robot Eyes 3D Scanner VR/AR Sensor Module [for Android, Linux and Windows PC]

    https://www.amazon.com/GFTVRCE-Somatosensory-Gesture-Recognition-Scanner/dp/B0C2H4QL5F/
    https://shop.orbbec3d.com/Astra-S
    https://shop.orbbec3d.com/camera

    [​IMG]

    some of these cameras work with Windows, Linux, Android and nvidia jetson

    (c) Arduino is also possible

    https://www.amazon.com/Arduino-Kinect-Projects-Design-Technology/dp/1430241675/
     
    #32 pcll99, Mar 17, 2024
    Last edited: Mar 19, 2024
  13. visor

    visor Regular Member

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    No kidding! I
    I'd even suggest that any mobile phone that's found to have their flash on during the matches would automatically have their phone confiscated for the duration of the tournament! Such a stupid annoyance! As if their puny flash will even light up their photo or video subject from 200 ft away !?

    Sent from my SM-S918W using Tapatalk
     
  14. pcll99

    pcll99 Regular Member

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    Yes, I will remind the service judge to turn off the flash or I will confiscate his phone. :D
     
  15. pcll99

    pcll99 Regular Member

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    #35 pcll99, Mar 20, 2024
    Last edited: Apr 6, 2024

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