Noise reduction based on iterative hybrid vector filter and detail correction employing correlation among RGB components. (English) Zbl 1287.93095
Summary: One of the important image processing tasks is to effectively reduce a noise from a digital image while keeping its features intact. In this paper, a new noise removal method for color images corrupted by the mixture of the impulsive and Gaussian noise is proposed. In the proposed method, firstly, a tentative output image, in which the noise is removed almost perfectly, is obtained by using the iterative robust switching vector median-based vector \(\varepsilon\)-filter, which is realized by hybridizing the robust switching vector median filter and the vector \(\varepsilon\)-filter and is newly proposed here. Then the residual components between the input and the tentative output images are calculated, and image components constituting edges, corner and other image details are extracted from the residual components by using the correlation characteristic in RGB components. Consequently, a final output is obtained by adding the extracted image components into the tentative output image. The effectiveness and the validity of the proposed method are verified by some experiments using the natural color images.
MSC:
| 93E11 | Filtering in stochastic control theory |
| 93E03 | Stochastic systems in control theory (general) |
| 68U10 | Computing methodologies for image processing |
| 94A08 | Image processing (compression, reconstruction, etc.) in information and communication theory |
Keywords:
noise reduction for color images; iterative hybrid vector filter; impulsive noise; Gaussian noise; vector \(\varepsilon\)-filter; correlation characteristic in RGB components.References:
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