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- W2014756525 abstract "Shape-changing, or morphological, transformations (e.g., erosion, dilation, median filtering, and other ranked-order filtering) on binary imagery can be obtained by optically convolving the input image with a disk or other binary spread function and thresholding the output. Gray-scale images can be processed if the input is decomposed into a sequence of binary slices by a variable thresholding operation (threshold decomposition). The slices undergo shape-changing transformations and are then added together to produce the output gray-scale image. Median filtering to remove salt-and-pepper noise from a gray-scale image is demonstrated. The use of gray-scale (as opposed to binary) convolution kernels allows extension of the method to a more general class of nonlinear filtering operations that includes stack filters." @default.
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- W2014756525 date "1988-04-01" @default.
- W2014756525 modified "2023-09-26" @default.
- W2014756525 title "Nonlinear Optical Image Filtering By Time-Sequential Threshold Decomposition" @default.
- W2014756525 doi "https://doi.org/10.1117/12.7976670" @default.
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