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A study of local contrast enhancement of medical ultrasound image
Pages: 891-896
Year: Issue:  4
Journal: Journal of Southwest University for Nationalities(Natrual Science Edition)

Keyword:  speckle noiseLee filtersoft morphologicallocal contrast enhancement;
Abstract: A scheme for enhancing local contrast of medical ultrasound images based on Lee filter and soft morphology is presented in this paper. Lee filter is used to pre-process the medical ultrasound images using local statistical characteristics. After pre-processing, the scale-specific features of the image are extracted by using soft morphological top-hat transform. Compared with traditional methods, the proposed algorithm has been executed on a set of raw images for enhancing local contrast. The result shows that it could preserve the feature zone when it enhances local contrast of ultrasound image.
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