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A Playfield Detection Algorithm based on Local Consistency in Sports Videos

Volume 14, Number 7, July 2018, pp. 1449-1458
DOI: 10.23940/ijpe.18.07.p8.14491458

Dawei Dong

Sports Science College of Harbin Normal University, Harbin, 150025, China

(Submitted on March 28, 2018; Revised on May 15, 2018; Accepted on June 19, 2018)

Abstract:

A playfield detection method exploiting both color and local consistency features are proposed. Color feature is used in existing playfield detection, which does not effectively remove green pixels that do not belong in the playfield. To solve this problem, local consistency feature is introduced, and the playfield is detected using both color feature and local consistency feature. To determine the detection threshold of local consistency, a two-dimensional histogram based method and a color constrained Otsu (cOtsu) based method are proposed, which are based on the principle of color characteristic and local entropy characteristic of playfield pixels, respectively. Experiments show that the proposed method is more effective and is able to detect playfield in several typical environments.

 

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