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説明

“Tennis Serve Tracker” measures tennis serve speed using video processing and image recognition technologies. Why is it worth trying it when there are similar apps on market? Because all these apps can be split on 2 categories - first are the ones that do it very, very bad or simply invent measured speed and won’t be mentioned here at all. The others do measure the serve speed, but it’s a lot of manual interactions with setting multiple parameters, like choosing deuce/ad serve type, server height, marking server and ball positions on the standard court image template that has no resemblance to the actual court we see with our eyes. These actions drastically increase an error margin, time and effort required to perform a single serve speed measurement - does it match fast pacing tennis game we all love?

So how “Tennis Serve Tracker” measures tennis serve speed? The fundamental difference is that it processes every single frame in the video feed and recognizes the court on the image frame. It allows to reconstruct 3D world coordinates of the server and ball from the image coordinates. Application provides constant feedback by highlighting court lines, net and a ball on the screen. Now having the time measurements from the video and ball world coordinates application can calculate your serve speed with a great accuracy, most times way better than a commercial speed gun (see doppler effect cosine factor error)! Visit “Demo Videos” application website page for videos with real time side by side comparison between speed radar gun and the app.

Final speed display is unlocked by lifetime "Premium" upgrade just for a price of a single tennis balls can. This app is a valuable tool for every tennis player who would like to improve their game and have a great serve!

新機能

バージョン 2.1.6

- Added short camera flash just before recognition starts to provide visual feedback to the server;
- Added recognition delay feature to start service tracking after predefined timeout in settings. Combined with "Burst" mode allows recognitions taken in the loop automatically without user interaction - single person can use the app with a tripod now.

評価とレビュー

1.0/5
1件の評価

1件の評価

tennis126

It doesn’t work

Sorry guys the software idea is good but it’s not working and it doesn’t recognize the court .

情報

販売元
2117497 ONTARIO INC.
サイズ
26.3MB
カテゴリ
スポーツ
互換性

iOS 8.0以降が必要です。iPhone 5S、iPhone 6、iPhone 6 Plus、iPhone 6s、iPhone 6s Plus、iPhone SE、iPhone 7、iPhone 7 Plus、iPhone 8、iPhone 8 Plus、iPhone X、iPhone XS、iPhone XS Max、iPhone XR、iPhone 11、iPhone 11 Pro、iPhone 11 Pro Max、iPad Air、iPad Air Wi‑Fi + Cellularモデル、iPad mini 2、iPad mini 2 Wi‑Fi + Cellularモデル、iPad Air 2、iPad Air 2 Wi‑Fi + Cellularモデル、iPad mini 3、iPad mini 3 Wi‑Fi + Cellularモデル、iPad mini 4、iPad mini 4 Wi‑Fi + Cellularモデル、12.9インチiPad Pro、12.9インチiPad Pro Wi‑Fi + Cellularモデル、9.7インチiPad Pro、9.7インチiPad Pro Wi‑Fi + Cellularモデル、iPad(第5世代)、iPad(第5世代)Wi‑Fi + Cellularモデル、12.9インチiPad Pro(第2世代)、12.9インチiPad Pro(第2世代)Wi‑Fi + Cellularモデル、10.5インチiPad Pro、10.5インチiPad Pro Wi‑Fi + Cellularモデル、iPad(第6世代)、iPad Wi‑Fi + Cellularモデル(第6世代)、11インチiPad Pro、11インチiPad Pro Wi‑Fi + Cellularモデル、12.9インチiPad Pro(第3世代)、12.9インチiPad Pro(第3世代)Wi‑Fi + Cellularモデル、iPad mini(第5世代)、iPad mini(第5世代)Wi‑Fi + Cellularモデル、iPad Air(第3世代)、iPad Air(第3世代)Wi‑Fi + Cellularモデル、iPad(第7世代)、iPad(第7世代)Wi‑Fi + Cellularモデル、iPod touch(第6世代)、および iPod touch(第7世代)に対応。

言語

英語

年齢
4+
Copyright
価格
無料
App内課金有り
  1. "Premium" upgrade ¥610

サポート

  • ファミリー共有

    ファミリー共有を有効にすると、最大6人のファミリーメンバーがこのAppを使用できます。

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