Rotation- and scale-invariant feature extraction by a diffractive optical inner-product transform
A diffractive optical element that is capable of extracting rotation- and scale-invariant features from input images is presented. The diffractive optical element performs an inner product between the input image and a set of basis functions. This set of basis functions is derived from that used in...
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| Published in | Applied optics (2004) Vol. 35; no. 11; p. 1894 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
United States
10.04.1996
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| Online Access | Get more information |
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| Summary: | A diffractive optical element that is capable of extracting rotation- and scale-invariant features from input images is presented. The diffractive optical element performs an inner product between the input image and a set of basis functions. This set of basis functions is derived from that used in the Fourier-Mellin transform. Simulated results from scaled and rotated versions of two input images are presented. |
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| ISSN: | 1559-128X |
| DOI: | 10.1364/AO.35.001894 |