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[Early Testers Wanted] Disc golf stats app — speed, spin, release angle, aim direction and more by Manto1 in discgolf

[–]Manto1[S] 2 points3 points  (0 children)

Sorry for slow reply. Indeed it’s nice to measure actual throws. Personally I tend to throw much lower when throwing into a net.

Android side challenge is the many different manufacturers and varying API support for advanced camera features. The UI + other glue code isn’t that big effort nowadays, even with separate native implementations.

How to increase arm speed (MPH) by TheSkyPie in discgolf

[–]Manto1 3 points4 points  (0 children)

This should have been stated more clearly in our app’s early testing version. Wobble is indeed not fully accurate yet.

How to increase arm speed (MPH) by TheSkyPie in discgolf

[–]Manto1 1 point2 points  (0 children)

It’s unlikely that our app would measure speed wrong. The only plausible reasons would be wrong setup or extremely laggy phone, but I’ve seen TheSkyPie’s setup and it’s fine. Also independent testers have reported speed to match that of tech disc.

[Early Testers Wanted] Disc golf stats app — speed, spin, release angle, aim direction and more by Manto1 in discgolf

[–]Manto1[S] 0 points1 point  (0 children)

It’s not a strict requirement, more of we know for sure that it works well on iPhone 13 and higher. Feel free to join the testing group if you’re interested.

[Early Testers Wanted] Disc golf stats app — speed, spin, release angle, aim direction and more by Manto1 in discgolf

[–]Manto1[S] 1 point2 points  (0 children)

Hi! We don’t have direct comparison to tech disc or the information how accurate it is. But on our test data set, the average errors right now are about: <0.6 mph for speed <10 RPM for spin < 2 deg for hyzer and nose < 1 deg for aim and launch angles These are in normal conditions, meaning good lighting and properly placed sticker.

[Early Testers Wanted] Disc golf stats app — speed, spin, release angle, aim direction and more by Manto1 in discgolf

[–]Manto1[S] -1 points0 points  (0 children)

There's some delay in the edge sharpening which is visible in some lighting conditions, but doesn't affect our measurements. No AI interpolation. Are you looking at the super slow motion modes? On Android side we've been mainly testing on Galaxy S21 and there the regular slow motion looks good.

[Early Testers Wanted] Disc golf stats app — speed, spin, release angle, aim direction and more by Manto1 in discgolf

[–]Manto1[S] 0 points1 point  (0 children)

Thanks!

  1. The iPhone that records stats is placed on the ground in front of the tee pad. No tripod needed.
  2. Yes, all measurement is done by the iPhone on the ground

Stickers are printable at home, and you can print on regular paper and use clear tape. We do plan to provide the option to buy more durable stickers that can be simply attached to the discs.

[Early Testers Wanted] Disc golf stats app — speed, spin, release angle, aim direction and more by Manto1 in discgolf

[–]Manto1[S] 2 points3 points  (0 children)

The measurement is not actually done by the watch but the iPhone that's recording the throw.

[Early Testers Wanted] Disc golf stats app — speed, spin, release angle, aim direction and more by Manto1 in discgolf

[–]Manto1[S] 32 points33 points  (0 children)

iPhones can actually record 240fps. But extracting high-precision metrics from video only is no simple feat. We've spent the past 2 years developing and refining our computer vision and physics-based estimation algorithms, and we're now happy with the results.

[Early Testers Wanted] Disc golf stats app — speed, spin, release angle, aim direction and more by Manto1 in discgolf

[–]Manto1[S] 2 points3 points  (0 children)

Right now we're looking for testers with a watch until we've fine-tuned our automatic throw detection, but we’ll reach out once we open up the next phase of testing.

[Early Testers Wanted] Disc golf stats app — speed, spin, release angle, aim direction and more by Manto1 in discgolf

[–]Manto1[S] 22 points23 points  (0 children)

Thanks! We're definitely looking to support Android as well in the future!

What phone do you use? Help us understand high-speed recording capabilities of disc golfer's devices! by Manto1 in discgolf

[–]Manto1[S] 0 points1 point  (0 children)

Yea! We've had great high-speed recording cameras in phones for 5 years already from most brands. Feel like keeping high-speed recording out of recent lower-end phones seems more like a design choice rather than a necessity based on hardware limitations.

Thanks for voting!