Ultrasound Speckle Reduction

after Coded Excitation and Pulse Compression

Local Statistics Filters

The Lee filter, in particular, was used.  The Lee filter uses blurring based on the mean and variance of local regions to denoise the image.

Below:  CP ultrasound of a 12 mm target at +6 dB from the background.  Bottom is the Lee filter using a window size of 7x7 applied to an eREC-FC ultrasound image of the same target.  Bottom shows the filter's effects on the CP image in an overlaid manner.



Lee despeckling


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Local Statistics Filters Results