A fast edge detector with subpixel accuracy

The authors present a fast moment-based method for locating an edge with a subpixel accuracy. The operator is suited to precision measurement of metal parts in a reasonable time period. The algorithm will not give wrong information even though there is no edge under the mask. A one-dimensional edge model is analyzed to find a method for edge detection with subpixel accuracy. The results are used to build the two-dimensional operator. The accuracy of the detector was tested under different noise conditions and is compared with that of other moment-based edge detectors.<
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