Fuzzy anisotropic diffusion for speckle filtering
نویسندگان
چکیده
An anisotropic diffusion filter contoled by fuzzy rules is presented. The proposed filter is based in the Perona-Malik technique, using a fuzzy reasoning to calculate de diffusion coefficient which controls the whole diffusion. The method has the advantage that it can be used for both smoothing and noise cleaning, as well as edge enhancement. This new aproach also allows ut to model the diffusion process through a rule base to have a better performance. Some examples are given to ilustrate the effectiveness of the proposed technique.
منابع مشابه
Speckle Reduction in Ultrasound Image
Abstract In this paper, a detailed description and comparison of speckle reduction of medical ultrasound is presented. Four speckle reduction filters are described in a detailed fashion to facilitate implementation for research and evaluation. The filtering techniques considered include Lee,Kuan,Frost and Oriented Speckle Reducing Anisotropic Diffusion(OSRAD). These filtering techniques are app...
متن کاملSpeckle Reduction in Ultrasound Image
Abstract In this paper, a detailed description and comparison of speckle reduction of medical ultrasound is presented. Four speckle reduction filters are described in a detailed fashion to facilitate implementation for research and evaluation. The filtering techniques considered include Lee,Kuan,Frost and Oriented Speckle Reducing Anisotropic Diffusion(OSRAD). These filtering techniques are app...
متن کاملComparison of Filters for Despeckle With Improved Speckle Reducing Antiscopic Diffusion Filter for Ultrasound Images
---Due to the presence of speckle noise leads to the poor quality of the US images. The presence of speckle noise makes it difficult to understand the information contain in the US image hence filtering of US image is required to improve the image quality. The paper gives us the comparison of different filters techniques (linear filter (lf),Anisotropic Diffusion(AD),Nonlinear filter kuwahara(Ku...
متن کاملPolSAR Speckle Filtering Techniques and Their Effects On classification
In this paper the most significant and recent polarimetric SAR (PolSAR) speckle filters that have been developed so far are reviewed and the effects of them on classification and their ability to preserve polarimetric properties along with their strength in noise reduction are studied. For this purpose, the PolSAR filters such as refined Lee, intensity driven adaptive neighborhood (IDAN), scatt...
متن کاملSpeckle reducing anisotropic diffusion
This paper provides the derivation of speckle reducing anisotropic diffusion (SRAD), a diffusion method tailored to ultrasonic and radar imaging applications. SRAD is the edge-sensitive diffusion for speckled images, in the same way that conventional anisotropic diffusion is the edge-sensitive diffusion for images corrupted with additive noise. We first show that the Lee and Frost filters can b...
متن کامل