Improving surface defect detection for quality assessment of car body panels.

Título inglés	Improving surface defect detection for quality assessment of car body panels.
Título español	Mejora de la detección de defectos superficiales para la evaluación de calidad de paneles de carrocerías de coches.
Autor/es	Döring, Christian ; Eichhorn, Andreas ; Girimonte, Daniela ; Kruse, Rudolf
Organización	Univ. Magdeburg Sch. Comput. Sci. Magdeburg, Magdeburg, Alemania;BMW Group Munich, Munich, Alemania;Politechn. Bari, Dep. Electrotechn. Electron., Bari, Italia
Revista	1134-5632
Publicación	2004, 11 (2-3): 163-177, 13 Ref.
Tipo de documento	articulo
Idioma	Inglés
Resumen inglés	Surface quality analysis of exterior car body panels was still character ized by manual detection of local form deviations and subjective evaluation by experts. The approach presented in this paper is based on 3-D image processing A major step towards automated quality control of produced panels is the classification of the different kinds of surface form deviations. In previous studies we compared the performance of different soft computing techniques for the detection of surface defect types. Although the dataset was rather small, high dimensional and unbalanced, we achieved promising results with regard to classification accuracies and interpretability of rule bases. In this paper we reconsider the collection of traming examples and their assignment to defect types by the quality experts. For improving the rehability of the defect classification we try to minimize the uncertainty of the quality experts subjective and error prone labelling. We build refined and more accurate classification models on the basis of a preprocessed training set that is more consistent. Improvements in classification accuracy using a partially supervised learning strategy were achieved.
Clasificación UNESCO	120903
Palabras clave español	Algoritmos de clasificación ; Reconocimiento de formas ; Defectos ; Control de calidad ; Procesamiento de imágenes ; Análisis cluster ; Lógica difusa ; Redes neuronales
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