public void configure(int numCols, int numRows) { ConfigChessboard config = new ConfigChessboard(numCols, numRows, 30); alg = FactoryPlanarCalibrationTarget.detectorChessboard(config).getAlg(); alg.setUserBinaryThreshold(config.binaryGlobalThreshold); alg.setUserAdaptiveBias(config.binaryAdaptiveBias); alg.setUserAdaptiveRadius(config.binaryAdaptiveRadius); }