| 摘要 |
In image processing, parallel and synchronous pixel processing elements have a pixel value register, a neighbour value register, and a processor receiving adjacent pixel and neighbour values for four adjacent pixels. In a series of iterations, the neighbour value register is updated with-in one mode-the maximum and-in another mode-the minimum of: the current value; the pixel value from any adjacent pixel whose pixel value is different from the current pixel value and the neighbour value from an adjacent pixel whose pixel value is the same as the current pixel value. The pixel value is then replaced by the minimum or maximum (depending on the mode) of the current pixel and neighbour values. The modes may alternate with the number of iterations in each series remaining constant or growing.
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