| 摘要 |
A method, apparatus, and article of manufacture provides a zero-crossing filtering region process for extracting data and related image elements from an input image. The input image is processed to generate connected component regions that correspond to image elements within the input image. The connected component regions are generated using a zero-crossing filter that attempts to identify pixels having a significant rate of change in value from their respective neighboring pixels. The connected components are then classified as being part of a foreground image or a background image that allows the image elements to be separated from the input image. Once the input image has been separated into multiple images, each separated image may be processed in a different manner depending upon the separate image's characteristics and uses.
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