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Signal-to-noise ratio estimation on SEM images using cubic spline interpolation with Savitzky-Golay smoothing
1Faculty of Engineering and Technology, Multimedia University, Melaka, Malaysia.
Abstract:
A new technique based on cubic spline interpolation with Savitzky-Golay noise reduction filtering is designed to estimate signal-to-noise ratio of scanning electron microscopy (SEM) images. This approach is found to present better result when compared with two existing techniques: nearest neighbourhood and first-order interpolation. When applied to evaluate the quality of SEM images, noise can be eliminated efficiently with optimal choice of scan rate from real-time SEM images, without generating corruption or increasing scanning time.
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