Very fast accurate square-root algorithm for use with gradient edge operators |
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Authors: | Mitchell HB |
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Affiliation: | Elta Electron Ltd., Ashdod, Israel; |
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Abstract: | Commonly used gradient edge operators such as the Sobel, Prewitt and Roberts operators all required a square root operation; this is, however, computationally intensive and, consequently, simple but very inaccurate approximations are often used instead. The author describes a new square root algorithm specifically designed for use with these edge operators. The result is a very simple, fast and extremely accurate algorithm.<> |
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