| 摘要 |
A spatio-temporally oriented coring method and apparatus for reducing noise in a sequence of images is disclosed. The method comprises the steps of decomposing each image into low-pass and a prefiltered sub-images, decomposing each prefiltered sub-image into a plurality of component patterns which are oriented in space, time or a combination of space and time, filtering each oriented component pattern to form a plurality of filtered patterns and reconstructing the image from the filtered patterns and the low-pass sub-image. Apparatus for reducing the noise in a sequence of images comprises means for decomposing each image into low-pass and prefiltered sub-images, means for decomposing each prefiltered sub-image into a plurality of component patterns which are oriented in space, time or a combination of space and time, means for filtering each component pattern to form a plurality of filtered patterns, and means for reconstructing the image from the filtered patterns and the low-pass sub-image.
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