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| | Patent 5293430: Automatic image segmentation using local area maximum and minimum image signals |
 | | The method as defined in claim 1, wherein in the determination of local area minimum, to be determined a minimum, a pixel must be at less than other pixels in the local area by a preselected amount. |
 | | The method as defined in claim 1, wherein the determination of local area maximum, to be determined a maximum, a pixel must be at greater than other pixels in the local area by a preselected amount. |
 | | In the neighbor maximum detector 104, a determination is made whether the gray level value of the center pixel being processed, V.sub.i,j, is greater than the values of its eight neighbors. |
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