Title :
Ultrasonic image processing using wavelet based deconvolution
Author :
Qinzhen Xu ; Wan, Suiren ; Pei, Wenjiang ; Luxi Yang
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing, China
Abstract :
The low resolution of the ultrasonic images is caused by the convolution between the reflect function of the measured tissues and the system pulse response. In this paper we estimate the system pulse response on the envelope ultrasonic image data using higher order spectra, and then implement the wavelet-based deconvolution algorithm. The resulting images behave clearer in velamen boundary and tissue layers, and the texture information also appears more detailed. The deconvolved image achieves good resolution gains in both axial and lateral direction.
Keywords :
Wiener filters; deconvolution; identification; image texture; ultrasonic imaging; wavelet transforms; Wiener filters; higher order spectra; identification; reflect function; system pulse response; texture information; tissue layers; ultrasonic image data; ultrasonic image processing; velamen boundary; wavelet based deconvolution algorithm; Additive noise; Biomedical measurements; Convolution; Deconvolution; Image processing; Image resolution; Pulse measurements; Signal resolution; System identification; Ultrasonic variables measurement;
Conference_Titel :
Neural Networks and Signal Processing, 2003. Proceedings of the 2003 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
0-7803-7702-8
DOI :
10.1109/ICNNSP.2003.1281040
