Optimally isotropic Laplacian operator.
basic_science · Level V
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- Record sourced from PubMed, PMID 18267421.
- Also identified by DOI 10.1109/83.791975.
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Abstract
Laplacian operators used in the literature for digital image processing are not rotationally invariant. We examine the anisotropy of 3 x 3 Laplacian operators for images quantized in square pixels, and find the operator which has the minimum overall anisotropy.