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Automatic Label Removal from Digitized Weld Radiographs

Soo, Say Leong, and Mani Maran Ratnam, and Zahurin Samad, and Mohd. Ashhar Khalid, (2007) Automatic Label Removal from Digitized Weld Radiographs. Jurnal Teknologi, 47 (D). pp. 1-14.

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Official URL: http://www.penerbit.utm.my/onlinejournal/47/D/JTDIS47D01.pdf

Affiliations

Universiti Sains Malaysia. School of Mechanical Engineering
Universiti Sains Malaysia. School of Mechanical Engineering
Universiti Sains Malaysia. School of Mechanical Engineering

Abstract

Abstract: This paper presents a methodology to remove labels automatically from digitized weld radiographs as part of the automatic weld defect detection process. An algorithm was developed to detect and remove labels printed onto weld radiographs before weld extraction algorithm or defect detection algorithm is applied. Normality test was used to determine if the intensity profile parallel tothe weld contains label pixels. Thresholding followed by region filling operations were carried out to remove the labels. The algorithm was tested on 50 weld radiographs with labels and the labels on 90% of these images were successfully removed.
Abstrak: Kertas kerja ini membentangkan keadah mengeluarkan label secara automatik daripada radiograf kimpalan sebagai sebahagian daripada proses pengesanan kecacatan automatik. Suatu algoritma telah dibangunkan untuk mengesan dan mengeluarkan label yang tercetak pada radiograf kimpalan sebelum algoritma penyarian kimpalan dikenakan. Ujian kenormalan digunakan untuk menentukan sama ada profil keamatan selari dengan kimpalan mengandungi piksel label. Pengambangan diikuti dengan operasi mengisi kawasan dilakukan untuk mengeluarkan label. Algoritma tersebut diuji ke atas 50 radiograf kimpalan yang mempunyai label dan label pada 90% daripada imej tersebut dikeluarkan dengan jayanya.

Item Type:Journal
Additional Information:The authors would like to thank the Ministry of Science, Technology and Environment (Malaysia) for the offer of the Intensification of Research in Priority Areas (IRPA)grant that enabled this work to be carried out.
Keywords:Weld radiography, label removal, normality test
Subjects:T Technology, Engineering
ID Code:4035

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