Video capture and post-processing technique for approximating 3D projectile trajectory

Chase M. Pfeifer, Judith M. Burnfield, Guilherme M. Cesar, Max H. Twedt, Jeff A. Hawks

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this paper we introduce a low-cost procedure and methodology for markerless projectile tracking in three-dimensional (3D) space. Understanding the 3D trajectory of an object in flight can often be essential in examining variables relating to launch and landing conditions. Many systems exist to track the 3D motion of projectiles but are often constrained by space or the type of object the system can recognize (Qualisys, Göteborg, Sweden; Vicon, Oxford, United Kingdom; OptiTrack, Corvallis, Oregon USA; Motion Analysis, Santa Rosa, California USA; Flight Scope, Orlando, Florida USA). These technologies can also be quite expensive, often costing hundreds of thousand dollars. The system presented in this paper utilizes two high-definition video cameras oriented perpendicular to each other to record the flight of an object. A post-processing technique and subsequent geometrically based algorithm was created to determine 3D position of the object using the two videos. This procedure and methodology was validated using a gold standard motion tracking system resulting in a 4.5 ± 1.8% deviation from the gold standard.

Original languageEnglish (US)
Pages (from-to)124-129
Number of pages6
JournalSports Technology
Volume8
Issue number3-4
DOIs
StatePublished - Oct 2 2015

Fingerprint

Post and Core Technique
Projectiles
video
Trajectories
flight
gold standard
Video cameras
Processing
Landing
Sweden
methodology
dollar
Technology
Costs
Costs and Cost Analysis
costs

Keywords

  • 3D trajectory
  • football flight
  • post processing
  • projectile tracking

ASJC Scopus subject areas

  • Human Factors and Ergonomics
  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Engineering (miscellaneous)

Cite this

Video capture and post-processing technique for approximating 3D projectile trajectory. / Pfeifer, Chase M.; Burnfield, Judith M.; Cesar, Guilherme M.; Twedt, Max H.; Hawks, Jeff A.

In: Sports Technology, Vol. 8, No. 3-4, 02.10.2015, p. 124-129.

Research output: Contribution to journalArticle

Pfeifer, Chase M. ; Burnfield, Judith M. ; Cesar, Guilherme M. ; Twedt, Max H. ; Hawks, Jeff A. / Video capture and post-processing technique for approximating 3D projectile trajectory. In: Sports Technology. 2015 ; Vol. 8, No. 3-4. pp. 124-129.
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