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Báo cáo sinh học: " Research Article On the Evaluation of Texture and Color Features for Nondestructive Corrosion Detection"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Research Article On the Evaluation of Texture and Color Features for Nondestructive Corrosion Detection | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2010 Article ID 817473 7 pages doi 10.1155 2010 817473 Research Article On the Evaluation of Texture and Color Features for Nondestructive Corrosion Detection Fatima N. S. Medeiros 1 Geraldo L. B. Ramalho 2 Mariana P. Bento 1 and Luiz C. L. Medeiros3 1 Teleinformatics Engineering Department Federal University of Ceara Campus ofPici 6007 Fortaleza CE Brazil 2Federal Institute of Education Science and Technology of Ceara Campus ofMaracanau Av. Contorno Norte 10 61925-315 Maracanau CE Brazil 3Petroleo Brasileiro S.A. LUBNOR IE Av. Leite Barbosa s n 60180-420 Fortaleza CE Brazil Correspondence should be addressed to Fatima N. S. Medeiros fsombra@deti.ufc.br Received 2 January 2010 Accepted 15 June 2010 Academic Editor Joao Marcos A. Rebello Copyright 2010 Fatima N. S. Medeiros et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. We present a methodology for automatic corrosion detection in digital images of carbon steel storage tanks and pipelines from a petroleum refinery. The database consists of optical digital images taken from equipments exposed to marine atmosphere during their operational life. This new approach focuses on color and texture descriptors to accomplish corroded and noncorroded surface area discrimination. The performance of the proposed corrosion descriptors is evaluated by using Fisher linear discriminant analysis FLDA . This approach presents two main advantages No refinery stoppages are required and potential-related catastrophes can be prevented. 1. Introduction Corrosion is the destructive attack of a metal by chemical or electrochemical reaction with its environment 1 . The exposure of metallic surfaces structures to rust degradation during their operational life is a known problem and it .