Speckle Noise Reduction in Ultrasound Images by Using Wavelets

Medical Ultrasound images are often deteriorated by noise due to various sources of interferences and other phenomena that affect the measurement processes in an imaging and acquisition system. Speckle noise occurrence is often undesirable, since it affects the tasks of human interpretation and diagnosis. So image de-noising has become a very essential exercise all through the diagnose. In this paper, the existing image de-noising algorithms are discussed with the intension of developing the new one. Wavelet based techniques has been explored and used for speckle noise reduction. The results obtained by the wavelets based techniques are compared with other speckle noise reduction techniques to demonstrate its higher performance for speckle noise reduction.