Despeckle Filtering for Multiscale Amplitude-Modulation Frequency-Modulation (AM-FM) Texture Analysis of Ultrasound Images of the Intima-Media Complex
Figure 2
Results using a low frequency scale for the AM-FM methods. (a) Noise-free synthetic IA image. (b) Noise-free synthetic AM-FM image with low frequency information. (c) AM-FM image corrupted with speckle noise. (d) IA estimation from the noisy image of (c). (e) IFx estimation from the noisy image. (f) IFy estimation from the noisy image. (g) IA estimation from the denoised image using the hybrid median filter. (h) IFx estimation from the denoised image using the hybrid median filter. (i) IFy estimation from the denoised image using the hybrid median filter. Under each image we show the same AM-FM results but with a focus (zoom) on the top strip for better visual analysis purposes.
