Title :
An Improved Ray Tracing Algorithm for Ultrasonic CT in Nondestructive Inspections
Author :
Wang, Bo ; Takatsubo, Junji ; Toyama, Nobuyuki ; Akimune, Yoshio ; Zhao, Mingying
Author_Institution :
Res. Inst. of Instrum. Frontier, AIST, Tsukuba
Abstract :
Ultrasonic computerized tomography (CT) is becoming more important than C-scans in nondestructive inspection due to its rapid scanning ability. However, ultrasonic CT poses challenges due to ray-bending in anisotropic media. This paper proposes an improved ray-tracing algorithm. Based on this algorithm, a bend-ray multiplicative algebraic reconstruction technique (MART) algorithm has been presented. This algorithm has been verified by numerical simulation and used for our nondestructive inspection work
Keywords :
acoustic tomography; anisotropic media; computerised tomography; image reconstruction; inspection; medical image processing; ray tracing; anisotropic media; bend-ray multiplicative algebraic reconstruction technique; nondestructive inspections; ray tracing algorithm; ultrasonic CT; ultrasonic computerized tomography; Acoustic beams; Acoustic propagation; Acoustic waves; Anisotropic magnetoresistance; Computed tomography; Image reconstruction; Inspection; Nonhomogeneous media; Ray tracing; X-ray imaging;
Conference_Titel :
Signal Processing, 2006 8th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9736-3
Electronic_ISBN :
0-7803-9736-3
DOI :
10.1109/ICOSP.2006.344431
