Title :
Speckle reduction in two easy steps
Author :
Leeman, S. ; Gatenby, J.C. ; Forsberg, F. ; Hoddinott, J.C.
Author_Institution :
King´´s Coll. Sch. of Med. & Dentistry, London, UK
Abstract :
A somewhat unorthodox technique for speckle reduction in medical ultrasound pulse-echo images is discussed. Two basic difficulties must be overcome. Recognition of the artifact is based upon an analysis of the instantaneous (temporal) frequency of the individual RF A-line. Correction of the speckle artifact at the local regions indicated by the recognition procedure is performed via techniques derived from the frequency-diversity approach. The hybrid temporal-Fourier processing algorithm has the merit of ultimate applicability on a real-time basis
Keywords :
acoustic imaging; biomedical ultrasonics; patient diagnosis; picture processing; speckle; RF A-line; frequency-diversity approach; hybrid temporal-Fourier processing algorithm; instantaneous temporal frequency; medical ultrasound pulse-echo images; real-time processing; speckle reduction technique; Biomedical imaging; Frequency diversity; Image analysis; Image recognition; Pulse measurements; Pulse shaping methods; Scattering; Signal processing; Speckle; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium, 1989. Proceedings., IEEE 1989
Conference_Location :
Montreal, Que.
DOI :
10.1109/ULTSYM.1989.67124
