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Abstract: The
Laplacian of Gaussian operator rapid localization and the principle of
subpixel edge operator based on two-dimensional spatial moment are
presented at first. A three gray levels edge model based on spatial
moment is given which is closed to practical image sampling. The error
formula is deduced. Finally, the experiment is carried out. The validity
and precision of subpixel edge spatial moment operator is studied and
the subpixel edge detection results are compared to practical size. The
results indicate that the subpixel edge detection operator based on
spatial moment is much better than traditional edge detection operator.
Key words: Laplacian
of gaussian operator Spatial moment operator Subpixel edge
localization
CLC No: TP391.4
上海市科委重点科技资助项目(021111125).
Received 20030522, received in revised form 20040125
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