A Dedicated Hardware System for a Class of Nonlinear Order Statistics Rational Hybrid Filters with Applications to Image Processing
نویسندگان
چکیده
A dedicated hardware system is developed for a recent class of nonlinear hybrid filters called Order StatisticsRational Hybrid Filters (OSRHF). The performance of these filters is also studied and compared against three effective nonlinear filters from the literature. The application at hand is noise filtering in grey level images. The proposed hardware system uses a residue number system (RNS) to compute the numerator and the denominator of the rational filter. The resulting structure is suitable for direct implementation on FPGAs.
منابع مشابه
Programmable hardware system for class of nonlinear order statistics rational hybrid filters - Electronics Letters
Zntroduction: Nonlinear filters have been found effective in removing different types of noise from images. This is especially the case if the noise corrupting the image is not Gaussian andlor image details are not to be blurred. For this purpose, a number of order statistics based techniques have been proposed [ 11. In this Letter we describe an extension to our work in [2], where we first pro...
متن کاملA new class of multichannel image processing filters
|In this paper, a novel lter structure is introduced for multispectral image processing, the vector median-rational hybrid lter's (VMRHF's), which constitute an extension of the nonlinear rational type hybrid lters called medianrational hybrid lter's (MRHF's) recently introduced for 1-D and 2-D signal processing. The VMRHF is a two-stages lter, which exploits in an e ective way the features of ...
متن کاملA New Class of Multichannel Image Processing Filters: Vector Median-Rational Hybrid Filters
A new class of nonlinear filters called Vector Median Rational Hybrid Filters (VMRHF) for multispectral image processing is introduced and applied to color image filtering problems. These filters are based on Rational Functions (RF). The VMRHF filter is a two-stage filter, which exploits the features of the vector median filter and those of the rational operator. The filter output is a result o...
متن کاملMedian-Rational Hybrid Filters
In this paper we introduce a new class of nonlinear filters called Median-Rational Hybrid Filters (MRHF) based on Rational Functions (RF). The filter output is the result of a rational operation taking into account three sub-functions, such as two FIR or median subfilters and one center weighted median filter (CWMF). The proposed MRHF filters have the inherent property that on smooth areas they...
متن کاملBiomedical Image Denoising Based on Hybrid Optimization Algorithm and Sequential Filters
Background: Nowadays, image de-noising plays a very important role in medical analysis applications and pre-processing step. Many filters were designed for image processing, assuming a specific noise distribution, so the images which are acquired by different medical imaging modalities must be out of the noise. Objectives: This study has focused on the sequence filters which are selected ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999