Table 1 Classical image denoising methods.
From: Efficient real-world image denoising using multi-scale gaussian pyramids
Characteristic | Mean filter21 | Median filter21 | Gaussian filter7 | DCT22 | Wavelet transform23 | Wiener filter22 | NLM25 |
|---|---|---|---|---|---|---|---|
Domain | Spatial | Spatial | Spatial | Transform | Transform | Statistical | Statistical |
Noise type | Gaussian | Salt-and- pepper | Gaussian | High-frequency | Various scales | Gaussian | Various |
Edge Preservation | Poor | Good | Moderate | Good | Good | Moderate | Excellent |
Complexity | Low | Low | Low | Moderate | Moderate | High | High |
