The homogeneity map method for speckle reduction in diagnostic ultrasound images


GÜNGÖR M. A. , KARAGÖZ İ.

MEASUREMENT, cilt.68, ss.100-110, 2015 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

This paper proposes a new method to reduce speckle noise in diagnostic ultrasound images by improving the speckle reduction capacity of an edge-sensitive filter. A homogeneity map is generated according to the local statistics of the window formed for each image pixel. The homogeneity map method uses the advantageous properties of a filter with a better smoothing capability than the edge-sensitive filter to increase the image quality of the edge-sensitive filter. We conducted our study using a cyst image simulated by the Field II program, a kidney image, and a real ultrasound image to which we applied two popular filters: SRAD and OBNLM. The results show that our proposed method has better denoising performance than the edge-sensitive filter, without any loss of edges. (C) 2015 Elsevier Ltd. All rights reserved.