Cork parquet quality control vision system based on texture segmentation and fuzzy grammar

• Autor(a) principal: Ferreira, Manuel João Oliveira
• Data de Publicação: 2009
• Outros Autores: Santos, Cristina, Monteiro, João L.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/1822/17657
• topic: Computer vision; Fuzzy grammar; Industrial application; Inspection system; Texture segmentation; Science & Technology

This paper presents a quality control vision system developed for the inspection of cork parquets that is already applied in the Portuguese cork industry. It is devoted specifically to the most critical quality issues: visibility of the lowest layer (BASE) on the noble layer (UPPER) and the homogeneity of this noble layer. Since these aspects are related with the texture of the raw material, the system was based on texture segmentation techniques. Features used were extracted from detail images of the wavelet transform. The classifier consists of a fuzzy grammar inference system. The segmentation procedure revealed a good performance indicated by high classification rates. Behavior in the industrial environment has been demonstrating high performance, revealing good perspectives for full spread industrialization.