Abstract
This paper proposed a novel three stage algorithm to eliminate salt & pepper noise from the image. The three stages in the proposed algorithm are i) Pre-processing stage, ii) Main algorithm and iii) Post-processing stage. The proposed algorithm performs a number of basic standard operations (mean and median) governed by fuzzy logic. In pre-processing and Post-processing stages, low density noise is eliminated whereas, the main stage handles the high density noises and noisy pixels available on the boundary of image. Further, the proposed algorithm utilizes non-corner pixels to estimate denoinsed pixels value for corner pixels. Therefore, it effectively eliminates salt and pepper noise while efficiently preserving the edges. The performance of the proposed filter is analysed and compared over the existing filters using various benchmark images. The proposed algorithm on an averages improves the PSNR value by 2.1% and 7.73% at noise density ranges from 10% to 90% and 91% to 99%, respectively.
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Bindal, N., Garg, B. Novel three stage range sensitive filter for denoising high density salt & pepper noise. Multimed Tools Appl 81, 21279–21294 (2022). https://doi.org/10.1007/s11042-022-12574-z
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DOI: https://doi.org/10.1007/s11042-022-12574-z