Fig. 9From: Nonlocal total variation based on symmetric Kullback-Leibler divergence for the ultrasound image despecklingThe representative regions corresponding to the red rectangle region in Fig. 6a for the liver ultrasound image. aThe original image. b-d Outputs of the compared filters, b BNLTV c SAR-BM3D, d The proposed method. BNLTV = Bayesian NLTV; SAR-BM3D = blocking matching 3D filter of SAR imageBack to article page