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- W2934804315 abstract "An algorithm based on signal local difference and an algorithm based on signal directional difference for detecting salt and pepper noise are designed in this article. Both of them belong to two-stage noise detection algorithms, and the first-stage detection for both is based on gray-scale range criterion. The difference between the two algorithms embodies in the second-stage detection. The former is based on local difference criterion, and the later is based on directional difference criterion. In the section of algorithm evaluation, first, the optimal parameter settings for the two algorithms are determined through analysis and experiments. Then, the denoising effects of the two algorithms are evaluated by denoising the test images with different noise density. The evaluation results show that the algorithm based on directional difference has better performance than the algorithm based on local difference. For both of the two algorithms, the denoising effects are inversely proportional to noise density. But more importantly, the two algorithms may be prone to misjudge the image-edge pixels or detail pixels as noise points. This will be the main improvement direction of the switch median filtering algorithm in the future." @default.
- W2934804315 created "2019-04-11" @default.
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- W2934804315 date "2019-01-01" @default.
- W2934804315 modified "2023-09-23" @default.
- W2934804315 title "Design and Analysis of Switch Median Filters for Salt and Pepper Noise" @default.
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- W2934804315 doi "https://doi.org/10.1007/978-981-13-3663-8_31" @default.
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