Browsing by Author "Mondragon, German"

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    Impresiones 3D, Nueva Tecnología que Apoya la Docencia Anatómica
    (2015) Inzunza, Oscar; Caro, Ivan; Mondragon, German; Baeza Fuentes, Felipe Andrés; Burdiles, Álvaro; Salgado A., Guillermo
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    Statistical pattern recognition classification with computer vision images for assessing the furan content of fried dough pieces
    (2018) Leiva-Valenzuela, Gabriel A.; Mariotti, Maria; Mondragon, German; Pedreschi, Franco
    This research tested furan classification models in fried matrices based on the pattern recognition of images. Samples were fried at 150, 160, 170, 180, and 190 degrees C for 5, 7, 9, 11, 13, and 30 min. Furan was measured by GC-MS. Corresponding images were acquired and processed to extract 2175 chromatic and textural features. Principal component analysis was used to reduce features to 8-12 principal components. In parallel, sequential forward selection coupled with linear discriminant analysis (LDA) was the best strategy to select only 5-7 features. LDA was the best classifier with 91.39-97.60% recognizing above 113 mu g/kg and 69.54-83.80% to classify images from class 1 (0-38 mu g/kg) from class 2 (39-113 mu g/kg). Also, support vector machine recognized 87.71-96.74% of class 3 (114-398 mu g/kg) from class 4 (399-646 mg/kg). The technique may be used to detect high amount of furan in fried starchy matrices. (C) 2017 Elsevier Ltd. All rights reserved.