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CURVATURE-PRESERVING FILTERS FOR DENOISING AND CONTROLLED DEBLURRING OF IMAGES
CURVATURE-PRESERVING FILTERS FOR DENOISING AND CONTROLLED DEBLURRING OF IMAGES
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机译:保留曲线的滤镜,可对图像进行去噪和控制去噪
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摘要
A curvature-preserving filter having a null covariance matrix is applied to an input image to produce a denoised output image for output to a graphic display device or to a machine analysis tool. In one embodiment, the input image is a small kernel consisting of a limited number of pixels and the filter is applied to the input image by direct summation. In another embodiment, a digital image is input into an image processor that executes a Fourier transform to produce a Fourier-transformed signal. The curvature -preserving filter is applied to the Fourier-transformed signal in Fourier space to produce a denoised signal, then the denoised signal is transformed by an inverse Fourier transform to generate a denoised output image In an alternate embodiment, the filter further produces a deblurred signal by including an inverse point-response function.
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