27 March 2011

AR for Learning Chess

Two students from the Terrassa School of Engineering have designed an innovative augmented reality system for learning to play chess that combines augmented reality, computer vision and artificial intelligence. An ordinary webcam, a chess board, a set of 32 pieces and custom software are the key elements in the final degree project of the telecommunications engineering students, from the UPC-Barcelona Tech's Terrassa School of Engineering (EET). The system combines augmented reality, computer vision and artificial intelligence, and the only equipment required is a high-definition home webcam, the Augmented Reality Chess software, a standard board and pieces, and a set of cardboard markers the same size as the squares on the board, each marked with the first letter of the corresponding piece: R for the king (rei in Catalan), D for the queen (dama), T for the rooks (torres), A for the bishops (alfils), C for the knights (cavalls) and P for the pawns (peons).


To use the system, learners play with an ordinary chess board but move the cardboard markers instead of standard pieces. The table is lit from above and the webcam focuses on the board, and every time the player moves one of the markers the system recognises the piece and reproduces the move in 3D on the computer screen, creating a virtual representation of the game. For example, if the learner moves the marker P (pawn), the corresponding piece will be displayed on the screen in 3D, with all of the possible moves indicated. This makes the system particularly suitable for children learning the basics of this board game. The learning tool also incorporates a move-tracking program called Chess Recognition: from the images captured by the webcam, the system instantly recognises and analyses every movement of every piece and can act as a referee, identify illegal moves and provide the players with an audible description of the game status.


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