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Gaussian-Adaptive Bilateral Filter
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DOI：10.1109/LSP.2020.3024990.png)
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摘要
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Recent studies have demonstrated that a bilateral filter can increase the quality of edge-preserving image smoothing significantly. Different strategies or mechanisms have been used to eliminate the brute-force computation in bilateral filters. However, blindly decreasing the processing time of the bilateral filter cannot further ameliorate the effectiveness of filter. In addition, even when the processing speed of the filter is increased, inherent problem occurred in the Gaussian range kernel when facing a noise filtering input and its effect on edge-preserving image smoothing operation are barely discussed. In this letter, we propose a novel Gaussian-adaptive bilateral filter (GABF) to resolve the aforementioned problem. The basic idea is to acquire a low-pass guidance for the range kernel by a Gaussian spatial kernel. Such low-pass guidance lead to a clean Gaussian range kernel for later bilateral composite. The results of experiments conducted on several test datasets indicate that the proposed GABF outperforms most existing bilateral-filter-based methods.
Keyword:
Kernel
Image edge detection
Smoothing methods
Filtering
Histograms
Convolution
Noise measurement
Bilateral filter
gaussian range kernel
gaussian spatial kernel
image smoothing
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9.6
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1.1W
被引数:
1.7W
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