Phase insensitive homomorphic image processing for speckle reduction.
Speckle appears in all conventional ultrasound images and is caused by the use of a phase-sensitive transducer. Speckle is an undesirable property as it can mask small but perhaps diagnostically significant image features. In this paper a homomorphic, hybrid nonlinear processing method, based on cancellation of scattering interference, is developed and examined. Experiments with synthetic and real ultrasound imagery show that the proposed method improves the contrast-to-noise ratio in both lesion and cyst areas and preserves edge clarity.
Chen
Y
Y
School of Electrical Engineering and Computer Science, Washington State University, Pullman, Washington, 99164-2752, USA.
Broschat
S L
SL
Flynn
P J
PJ
D003198:Computer Simulation; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008433:Mathematics; D014463:Ultrasonography / Q000379:methods*