Name
Title | ||
|---|---|---|
Tracking Futsal Players With A Wide-Angle Lens Camera: Accuracy Analysis Of The Radial Distortion Correction Based On An Improved Hough Transform Algorithm |
Abstract | ||
|---|---|---|
The aim of this study was to assess the applicability and reliability of a single wide-angle lens GoPro r camera for tracking and kinematics analysis of futsal players. An official game of a Brazilian professional team in the quarter-final round of the 2013 Sao Paulo futsal league was recorded by four digital video cameras (30 Hz; 720 x 480) placed at the highest points of the court (40 x 20 m; FIFA standard). We compared tracking performed with three cameras equipped with conventional lenses to a GoPro r camera with a wide-angle lens with a 170 degrees field of view. Manual and automatic tracking of players trajectories (n = 5; 23.20 +/- 2.39 years) during competition and in a controlled environment were performed. We found that the root-mean-square error calculated to determine the position on the court based on images captured with a GoPro r camera was 0.32 m and for the velocity was 0.71 m s-1. A 5-min excerpt of the game showed an average difference of 2.11% between the total distance covered obtained by tracking with the GoPro r with radial distortion correction (438.97 +/- 164.65 m), and cameras with conventional lenses (449.54 +/- 170.92 m). Temporal correlation analysis confirmed the great similarity between the reconstructed trajectories obtained by these cameras (r = 0.99 for movements on both x and y axes). We showed that a single GoPro r Hero3+ can provide reliable kinematic analysis of computational tracking based on videogrammetry for futsal, using the Hough transform and division model technique for radial distortion correction. |
Year | DOI | Venue |
|---|---|---|
2017 | 10.1080/21681163.2015.1072055 | COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING-IMAGING AND VISUALIZATION |
Keywords | Field | DocType |
Radial distortion, Hough transform, GoPro, automatic tracking, futsal, biomechanics | Distortion (optics),Field of view,Computer vision,Digital video,Kinematics,Wide-angle lens,Computer graphics (images),Computer science,Hough transform,Lens (optics),Artificial intelligence | Journal |
Volume | Issue | ISSN |
5 | 3 | 2168-1163 |
Citations | PageRank | References |
1 | 0.36 | 6 |
Authors | ||
9 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| luiz henrique palucci vieira | 1 | 1 | 0.36 |
| emilio a pagnoca | 2 | 1 | 0.36 |
| fabio milioni | 3 | 1 | 0.36 |
| ricardo augusto barbieri | 4 | 1 | 0.36 |
| rafael pombo menezes | 5 | 1 | 0.36 |
| L. Alvarez | 6 | 285 | 39.37 |
| luis g deniz | 7 | 1 | 0.36 |
| Daniel Santana-Cedrés | 8 | 35 | 6.01 |
| paulo roberto pereira santiago | 9 | 1 | 0.36 |