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Identification of printed pattern repeat and its dimensions by image analysis

Abstract A fast method for the determination of the repeat of printed patterns and its dimensions with the help of an image analysis system has been developed. Repeat is the periodicity of any pattern. Modification or reproduction of patterns requires the identification or extraction of the repeat and its dimensions. The developed method in this research is based on the distance matching function. Distance matching function is a derivative of the co-occurrence matrix. The co-occurrence matrix constitutes one of the most important algorithms capable of identifying the repeat. The method developed in this work makes the rapid and exact identification of a range of repeats on non-pile fabrics possible. The range covers simple repeats as well as more complex ones such as compound, staggered and chessboard repeats.