Скачать или смотреть CHESS-CAM, follow and convert OTB played Chess games to FEN, UCI and SAN with a CAM.

a python program to convert images from OTB chess games (OTB = over the board) to posititions and moves in FEN (Forsyth Edward Notation), UCI (Universal Chess Interface)/SAN (Standard Algebraic Notation).

This program uses a cam, makes images of the chesssboard after each move, converts positions to FEN and moves to UCI/SAN.

The chess board is orthorectified from a birds eye view. For move detection image differences before and after each move are used.The moved pieces are identified by the contour function in Open CV with area treshold.

The chess players can use standard equipment (any chess board and any pieces). A simple modification of the DGT 3000 chessclock allows to recognize, when the player finished a move and pressed the clocks lever.

Illumination and a stable mount of the cam are important in this project. Therefore a ceiling mount for the cam and a LED ring fotolight were used.

Detection of moved pieces is rapid and achieved within 150 msecs. Castling moves, en passant and piece conversion on the 1rst and 8th row are handled by the program.

The resulting FEN /UCI and SAN data can be processed by chess engines or used to follow the game and to print a notation sheet.

Hardware:
Chessboard and pieces
DGT 3000 modified with a HAL sensor to detect lever positions
Arduino Micro to send lever positions as Keystrokes via USB to Xavier NX
Panasonic NV-GS MiniDV Camcorder
Ceiling mount (Walimex)
Video light (Walimex)
USB Video grabber
Nvidia Xavier NX with Keyboard, mouse, display

Software:
Ubuntu 18.04
Python 3.6
OpenCV
Numpy
Stockfish 14
Python-chess 0.31.4