TY - JOUR AU - Ben Mhamed, Issam AU - Abid, Sabeur AU - Fnaiech, Farhat PY - 2012 DA - 2012/02/27 TI - Weld defect detection using a modified anisotropic diffusion model JO - EURASIP Journal on Advances in Signal Processing SP - 46 VL - 2012 IS - 1 AB - This article proposes a new modified anisotropic diffusion scheme for automatic defect detection in radiographic films. The new diffusion method allows to enhance, to sharpen anomalies, and to smooth the background of the image. This new technique is based on the modification of the classical diffusion rule by using a nonlinear sigmoidal function. Experimental results are carried out on multiple real radiographic recorded films of Gaz pipelines of the "Tunisian Society of Electricity and Gas distribution: STEG" and the society "Control offices--chemical and industrial analysis laboratories: Saybolt- Tunisia". The new automatic defect detection method shows good performance in comparison with other existing algorithms. SN - 1687-6180 UR - https://doi.org/10.1186/1687-6180-2012-46 DO - 10.1186/1687-6180-2012-46 ID - Ben Mhamed2012 ER -