Finding out general tendencies in speckle noise reduction in ultrasound images
مقدمه :
This article investigates and compiles some of the techniques mostly used in the smoothing or suppression
of speckle noise in ultrasound images. With this information, a comparison of all the methods studied
is done based on an experiment, using quality metrics to test their performance and show the benefits
each one can contribute. To test the methods, a synthetic, noise-free image of a kidney is created and later
simulations using Field II program to corrupt it are performed. This way, the smoothing techniques can be
compared using numeric metrics, taking the noise-free image as a reference. Since real ultrasound images
are already noise corrupted images and real noise-free images do not exist, conventional metrics cannot
be used to indicate the quality obtained with filtering. Nevertheless, we propose the use of the tendencies
observed in our study in real images.
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