منابع مشابه
Multicomponent MR Image Denoising
Magnetic Resonance images are normally corrupted by random noise from the measurement process complicating the automatic feature extraction and analysis of clinical data. It is because of this reason that denoising methods have been traditionally applied to improve MR image quality. Many of these methods use the information of a single image without taking into consideration the intrinsic multi...
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Traditional noise removal methods like Non-Local Means create spurious boundaries inside regular zones. Visushrink removes too many coefficients and yields recovered images that are overly smoothed. In Bayesshrink method, sharp features are preserved. However, PSNR (Peak Signal-to-Noise Ratio) is considerably low. BLS-GSM generates some discontinuous information during the course of denoising a...
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The Fresnel transform imaging method with a nonlinear field gradient for phase encoding has a great property that it can diffuse the noise contained in nuclear magnetic resonance (NMR) signal. But we cannot find any diffuseness of the noise, when we fix the signal matrix size to reconstruct images. However, if we prepare suitable area for the noise diffusing by zero-filling technique before rec...
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ژورنال
عنوان ژورنال: International Journal of Biomedical Imaging
سال: 2009
ISSN: 1687-4188,1687-4196
DOI: 10.1155/2009/756897