基于BEMD的疲劳断口图像分割-失效分析与预防.PDF

2011 4 April, 2011 6 2 Vol. 6, No. 2 BEMD , , , (无损检测技术教育部重点实验室(南昌航空大学),南昌 330063) [ ] , BE D bimf : , BE D, bimf ; , Laws bmi f;,, [] ;; Laws;; [] TP391. 41 [] A do:i 10. 3969/.j issn. 2011. 02. 002 [] 2011 Fatigue F racture Im age Segm en tation Based on BEM D ZHANG Jun, LI ing, LU Yuming, YANG Xiaoqin (K ey L aboratory of N ondestruct ive Test (N anchang H angK ong Un iv ersity ) , N anchang 330063, Ch ina ) A b stract: The texture of fatigue fracture is diverse, so it is difficult to segment an mi agewith avariety of textures. A new mi age segmentation method for fatigue fracture based on BE Dwas presented. The mi agewas decomposed by BE D and bmi f texture energywas extracted as the feature. First, the mi agewas decomposed by BE D into a series of intrinsicmode function bmi f and residual functions. Then, Laws texture energymethodwas used to extract the bmi f and residual textureenergy as the feature ele ments. Finally, the featurewas segmented by thenearestneighboring criterion. Comparedw ith theclassicalFouriermethod, this method applies to the segmentation of fatigue fracture mi ages and can obtain satisfactory results. K ey w ords: fatigue fracture mi age; intrinsicmode function; laws texture energy; mi age segmentation; bidmi ensional empirical modedecomposition [ 14] 0 [ 5] ,