Title :
3E-1 Real-Time Ultrasonic Imaging System Based on Discrete Cosine Transform for NDE Applications
Author :
Oruklu, Erdal ; Saniie, Jafar
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Inst. of Technol., Chicago, IL
Abstract :
This paper presents a unified, hardware efficient architecture for multi-purpose ultrasonic imaging systems. Ultrasonic flaw detection, data compression and denoising applications are implemented within the same framework by integrating a common transform block, discrete cosine transform (DCT). DCT is primarily used for energy compaction properties in compression applications and for frequency decomposition in detection algorithms. Furthermore, recursive DCT implementations based on Clenshaw´s formula are presented in order to reduce the hardware requirements of large scale transforms for a feasible real-time SoC architecture
Keywords :
discrete cosine transforms; flaw detection; ultrasonic imaging; ultrasonic materials testing; NDE applications; compression applications; data compression; denoising applications; detection algorithms; discrete cosine transform; energy compaction properties; frequency decomposition; real-time ultrasonic imaging; ultrasonic flaw detection; Compaction; Data compression; Detection algorithms; Discrete cosine transforms; Discrete transforms; Frequency; Hardware; Noise reduction; Real time systems; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium, 2006. IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
1-4244-0201-8
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2006.118
