Vision Based Referee Sign Language Recognition System for the RoboCup MSL League

• Type: Article in International Conference Proceedings Book
• Date: 2014

Authors

trigueiros, p (Author) Other; ribeiro, fr (Author) Other; reis, lp (Author) FCUP

Conference proceedings International

Title: RoboCup 2013: Robot World Cup XVII

Pages: 360-372

17th International Symposium on Robot World Cup (RoboCup)

Eindhoven, NETHERLANDS, JUN 24-JUL 01, 2013

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 3 Citations

Other information

Authenticus ID: P-009-QVB

DOI: 10.1007/978-3-662-44468-9_32

Abstract (EN): In RoboCup Middle Size league (MSL) the main referee uses assisting technology, controlled by a second referee, to support him, in particular for conveying referee decisions for robot players with the help of a wireless communication system. In this paper a vision-based system is introduced, able to interpret dynamic and static gestures of the referee, thus eliminating the need for a second one. The referee's gestures are interpreted by the system and sent directly to the Referee Box, which sends the proper commands to the robots. The system is divided into four modules: a real time hand tracking and feature extraction, a SVM (Support Vector Machine) for static hand posture identification, an HMM (Hidden Markov Model) for dynamic unistroke hand gesture recognition, and a FSM (Finite State Machine) to control the various system states transitions. The experimental results showed that the system works very reliably, being able to recognize the combination of gestures and hand postures in real-time. For the hand posture recognition, with the SVM model trained with the selected features, an accuracy of 98,2% was achieved. Also, the system has many advantages over the current implemented one, like avoiding the necessity of a second referee, working on noisy environments, working on wireless jammed situations. This system is easy to implement and train and may be an inexpensive solution.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13