This work provides the knowledge about adaptive and anisotropic diffusion techniques for speckle noise removal from various types of ultrasonic liver images. A comparative study is made based on the performance of various algorithm such as anisotropic, speckle reducing anisotropic diffusion algorithm(SRAD), Laplacian pyramid non-linear diffusion (LPND) with various filters like Gaussian, Sobel, Average, Disk, Unsharp and log. Finally a fused algorithm is developed which performs all the filtering techniques on the input image and the statistical parameters are calculated for the output images obtained from all the filters.

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Speckle Noise Ultrasonic Srad Lpnd