抄録
The speckle noise has a different characteristic comparison with natural images and its evaluation can be defined by an investigator who observes the normal part and abnormal on sonography image. Because of the speckle noise is one of the major sources of image quality degradation and its special scanning conversion processing, a lot of conventional noise reduction method is not enough for speckle noise reduction. In this paper a new method to enhance ultrasound images is proposed. The new approach attempts to confirm the adaptive threshold value of US image by an artificial speckled US image modeling. The multi-layer wavelet filtering method is proposed by wavelet decomposition based adaptive thresholding.
