Difference between revisions of "AlpineReplay"

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[[ru:AlpineReplay]]
 
{{DISPLAYTITLE:<span style="display:none">{{FULLPAGENAME}}</span>}}
 
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<font size="5"> AlpineReplay</font>
 
<font size="5"> AlpineReplay</font>
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== About ==
 
== About ==
  
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The project was started in 2010 at the initiative of [http://www.linkedin.com/pub/anatole-lokshin/3/434/468 Anatoly Lokshin], CEO of AlpineReplay ltd. The project involves AlpineReplay ltd., HORIS ltd. and [[Main Page|Department "Theoreticla Mechanics"]] SPbPU. The main objective of the project is creating a mobile application for the skiers and snowboarders, allowing to measure parameters of their movement: trajectory, speed, number of jumps, stunt parameters, air time, number of calories spent and much more.
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The project was started in 2010 at the initiative of [http://www.linkedin.com/pub/anatole-lokshin/3/434/468 Anatoly Lokshin], CEO of AlpineReplay ltd. The project involves AlpineReplay ltd., HORIS ltd. and [[Main Page|Department "Theoreticla Mechanics"]] SPbPU. The main objective of the project is to create a mobile application for the skiers and snowboarders, allowing to log their detailed stats: track, speed, a number of jumps, stunt parameters, air time, a number of calories spent and much more.
  
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[[File:AlpineReplay_geography.jpg|700px|thumb|center| Over 200 000 people all over the world use AlpineReplay app.]]
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[[File:AlpineReplay_geography_eng.jpg|700px|thumb|center| Over 200 000 people all over the world use AlpineReplay app.]]
  
 
== Areas of research ==  
 
== Areas of research ==  
 
[[File:Snowboarder.jpg|250px|thumb|right|Object of research]]
 
[[File:Snowboarder.jpg|250px|thumb|right|Object of research]]
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Employees and students of [[Main Page|Department "Theoreticla Mechanics"]] conduct research within "AlpineReplay" project in following areas:
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Employees and students of [[Main Page|Department "Theoretical Mechanics"]] conduct research within "AlpineReplay" project in the following directions:
  
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* development of the jump detection algorithm based on fuzzy logic
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* development of the jump detection algorithm based on the fuzzy logic (MATLAB and C++)
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* identification of the rotation angle of a skier in a jump
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* identification of a rotation angle in a jump
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* development of gyroscope calibration algorythm
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* development of a gyroscope calibration algorithm
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* development of the algorithms in MATLAB and C++
 
  
 
== Demonstration ==
 
== Demonstration ==
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== Download AlpineReplay application ==
 
== Download AlpineReplay application ==
  
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You can download AlpineReplay application using following liks:
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You can download AlpineReplay application using the following liks:
  
 
* [https://play.google.com/store/apps/details?id=com.alpinereplay.android&feature=search_result Android version]
 
* [https://play.google.com/store/apps/details?id=com.alpinereplay.android&feature=search_result Android version]
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* '''Spin'''
 
* '''Spin'''
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Rotations are generally performed in increments of 180 °, depending on the nature of the obstacle. For description of snowboarder's spinning terms "frontside" and "backside" are used. "Frontside" indicates the direction of rotation: snowboarder in goofy stance rotates clockwise, and in regular stance - counterclockwise. For "backside" clockwise rotation is typical for regular stance and counterclockwise - for goofy stance.
+
Spins, as a rule, are done a frontside or backside, a snowboarder rotates 180° degrees clockwise/counterclockwise depending on the nature of the obstacle. Terms "frontside" and "backside" are used to describe snowboarder's spinning direction. "Frontside" indicates that a snowboarder in the goofy stance rotates clockwise, and in the regular stance, counterclockwise. "Backside" clockwise rotation is typical for the regular stance and the counterclockwise rotation is typical for the goofy stance.
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You don't need those terms for describing skiers spinning.
 
  
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Term "Cab"(сaballerial) means any frontside snowboarder's rotation without performing a stance (regardless of half-turns amount).
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Term "Cab" (сaballerial) means any frontside snowboarder's spin without performing a stance (regardless a half-turns number).
 +
 
 +
Spins are "corked" when the axis of the spin allows for the snowboarder to be oriented sideways or upside-down in the air, typically without becoming completely inverted (though the head and shoulders should drop below the relative position of the board).
  
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Rotation is called "Cork" when the skier or snowboarder's rotation axis is oriented sideways of moves up or down in the air and is doesn't usually turn out to be completely inverted (although head and shoulders should fall below the board or skis).
 
  
 
* '''Flip'''
 
* '''Flip'''
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Flip is a rotation around horizontal axis, ie through the head.
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Flip is a rotation around the horizontal axis, i.e. over the head. There are front flip, back flip and Lincoln Loop (side flip for skiers).
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There are front flip, back flip and lincoln loop (side flip for skiers).
 
  
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It is also important not only to perform tricks, but also technique of performance. So, during world competitions they rate ability to keep balance, smoothness of the stunt, and, importantly, a touchdown. For example, a significant number of points is removed for a touch of hand on landing.
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It is also important not only to perform a trick, but also to do it technically correct. Performing stunts is just a part of a job: the technique also matters a lot. So, during the world competitions abilities to keep balance, smoothness of the stunt, and, importantly, a touchdown are rated. For example, a significant number of points is removed for a touch of hand on landing.
 +
 
 +
It should be noted that it's not always possible to tell the difference between the rotation types without watching a replay.
  
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It should be noted that it's not always possible to tell the difference between different types of rotation without watching a replay.
 
  
 
<gallery widths=250px heights=250px perrow = 4>
 
<gallery widths=250px heights=250px perrow = 4>
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File: regular_goofy.jpg|Рис.1. Stances: regular and goofy
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File: regular_goofy.jpg|Fig.1. Stances: regular and goofy
  
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File: FS_360.jpg|Рис.2. Frontside 360
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File: FS_360.jpg|Fig.2. Frontside 360
  
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File: BS_360.jpg|Рис.3. Backside 360
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File: BS_360.jpg|Fig.3. Backside 360
  
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File: Cab_540.jpg|Рис. 4. Cab 540
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File: Cab_540.jpg|Fig.4. Cab 540
  
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File: Triple_Cork.jpg|Рис. 5. Triple Cork
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File: Triple_Cork.jpg|Fig.5. Triple Cork
  
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File: Front_flip.jpg|Рис. 6. Front Flip
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File: Front_flip.jpg|Fig.6. Front Flip
  
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File: Back_flip.jpg|Рис. 7. Back Flip
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File: Back_flip.jpg|Fig.7. Back Flip
 
</gallery>
 
</gallery>
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== Videos of the most spectacular stunts  ==
 
== Videos of the most spectacular stunts  ==
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== Site of the project ==
 
== Site of the project ==
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[http://www.alpinereplay.com www.alpinereplay.com] - social network for skiers and snowboarders
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[http://www.alpinereplay.com A social network for skiers and snowboarders]
  
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[http://www.traceup.com www.traceup.com] - buy TRACE
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[http://www.traceup.com Buy TRACE]
  
 
== Patents ==
 
== Patents ==
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3. Lokshin A.M., Kuzkin V.A. [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1=20130346013.PGNR. Method and apparatus for determining sportsman jumps using fuzzy logic]. U.S. Patent Application № 13/612 470, Dec. 09, 2012.  
 
3. Lokshin A.M., Kuzkin V.A. [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1=20130346013.PGNR. Method and apparatus for determining sportsman jumps using fuzzy logic]. U.S. Patent Application № 13/612 470, Dec. 09, 2012.  
  
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4.  Lokshin A.M., Kuzkin V.A.,  Dvas N.G. [[Медиа: US20120116716A1.pdf | Device and method of gyro sensor calibration]]. US patent, Application № 13/291 844,  2011.
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4.  Lokshin A.M., Kuzkin V.A.,  Dvas N.G. [[Media: US20120116716A1.pdf | Device and method of gyro sensor calibration]]. US patent, Application № 13/291 844,  2011.
  
 
== Ссылки ==
 
== Ссылки ==
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* [http://en.wikipedia.org/wiki/List_of_snowboard_tricks Description of basic snowboarders' stunts ]
 
* [http://en.wikipedia.org/wiki/List_of_snowboard_tricks Description of basic snowboarders' stunts ]
 
* [http://skateboardingtrickslist.com Description of basic skiers' stunts]
 
* [http://skateboardingtrickslist.com Description of basic skiers' stunts]
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* [[Skateboarding tricks| Snowboardres' stunts in slow motion (1000 fps)]]
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* [http://tm.spbstu.ru/Skateboarding_tricks Snowboarders' stunts in slow motion (1000 fps)]

Latest revision as of 17:58, 18 January 2017


AlpineReplay

Sticker AlpineReplay.png

About[edit]

The project was started in 2010 at the initiative of Anatoly Lokshin, CEO of AlpineReplay ltd. The project involves AlpineReplay ltd., HORIS ltd. and Department "Theoreticla Mechanics" SPbPU. The main objective of the project is to create a mobile application for the skiers and snowboarders, allowing to log their detailed stats: track, speed, a number of jumps, stunt parameters, air time, a number of calories spent and much more.

Over 200 000 people all over the world use AlpineReplay app.

Areas of research[edit]

Object of research

Employees and students of Department "Theoretical Mechanics" conduct research within "AlpineReplay" project in the following directions:

  • development of the jump detection algorithm based on the fuzzy logic (MATLAB and C++)
  • identification of a rotation angle in a jump
  • development of a gyroscope calibration algorithm

Demonstration[edit]

Download AlpineReplay application[edit]

You can download AlpineReplay application using the following liks:


Basic stunts of skiers and snowboarders[edit]

  • Spin

Spins, as a rule, are done a frontside or backside, a snowboarder rotates 180° degrees clockwise/counterclockwise depending on the nature of the obstacle. Terms "frontside" and "backside" are used to describe snowboarder's spinning direction. "Frontside" indicates that a snowboarder in the goofy stance rotates clockwise, and in the regular stance, counterclockwise. "Backside" clockwise rotation is typical for the regular stance and the counterclockwise rotation is typical for the goofy stance.

Term "Cab" (сaballerial) means any frontside snowboarder's spin without performing a stance (regardless a half-turns number).

Spins are "corked" when the axis of the spin allows for the snowboarder to be oriented sideways or upside-down in the air, typically without becoming completely inverted (though the head and shoulders should drop below the relative position of the board).


  • Flip

Flip is a rotation around the horizontal axis, i.e. over the head. There are front flip, back flip and Lincoln Loop (side flip for skiers).

It is also important not only to perform a trick, but also to do it technically correct. Performing stunts is just a part of a job: the technique also matters a lot. So, during the world competitions abilities to keep balance, smoothness of the stunt, and, importantly, a touchdown are rated. For example, a significant number of points is removed for a touch of hand on landing.

It should be noted that it's not always possible to tell the difference between the rotation types without watching a replay.


  • Fig.1. Stances: regular and goofy

  • Fig.2. Frontside 360

  • Fig.3. Backside 360

  • Fig.4. Cab 540

  • Fig.5. Triple Cork

  • Fig.6. Front Flip

  • Fig.7. Back Flip



Videos of the most spectacular stunts[edit]

Site of the project[edit]

A social network for skiers and snowboarders

Buy TRACE

Patents[edit]

1. Lokshin A.M., Kuzkin V.A., Roberts-Thomson C.L. Use of gyro sensors for jump detection, U.S. Patent Application № 62/001 935, May 28, 2014.

2. Lokshin A.M., Kuzkin V.A. Systems and methods for identifying and characterizing athletic maneurs. US patent, Application № 13/932 899, 2013.

3. Lokshin A.M., Kuzkin V.A. Method and apparatus for determining sportsman jumps using fuzzy logic. U.S. Patent Application № 13/612 470, Dec. 09, 2012.

4. Lokshin A.M., Kuzkin V.A., Dvas N.G. Device and method of gyro sensor calibration. US patent, Application № 13/291 844, 2011.

Ссылки[edit]

Retrieved from "http://mech.spbstu.ru/?title=AlpineReplay&oldid=8955"