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sclass ChessPieceRecognizer { MultiMap profiles; new Map fillGradeThresholdsByPiece; void load { long time = sysNow(); profiles = agiBlue_chessPieceProfiles(); for (S piece : ai_6chessPieces()) { L w = collect fillGrade(profiles.get("white " + piece)); L b = collect fillGrade(profiles.get("black " + piece)); float white = floatAverage(w); float black = floatAverage(b); print("white/black " + piece + " avg: " + white + "/" + black); print("white/black " + piece + " min/max: " + floatMax(w) + "/" + floatMin(b)); fillGradeThresholdsByPiece.put(piece, avg(white, black)); } profiles = mapMultiMapKeys lastJavaToken(profiles); // drop color done2("Loading " + n2(l(profiles), "piece profile"), time); } Pair recognize(BufferedImage img) { ChessPieceProfile1 profile = chessOCR_pieceProfileFromRawImage_1(img); S piece, double score = unpair searchForMostSimilarByteArrayInMultiMap(profile.sideProfile, img); Double t = fillGradeThresholdsByPiece.get(piece); if (t != null) piece = (profile.fillGrade < t ? "white" : "black") + " " + piece; ret pair(piece, score); } }