Provably scale-covariant networks from oriented quasi quadrature measures in cascade
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arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2019
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| _version_ | 1866910611290456064 |
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| author | Lindeberg, Tony |
| author_facet | Lindeberg, Tony |
| contents | This article presents a continuous model for hierarchical networks based on a combination of mathematically derived models of receptive fields and biologically inspired computations. Based on a functional model of complex cells in terms of an oriented quasi quadrature combination of first- and second-order directional Gaussian derivatives, we couple such primitive computations in cascade over combinatorial expansions over image orientations. Scale-space properties of the computational primitives are analysed and it is shown that the resulting representation allows for provable scale and rotation covariance. A prototype application to texture analysis is developed and it is demonstrated that a simplified mean-reduced representation of the resulting QuasiQuadNet leads to promising experimental results on three texture datasets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1903_00289 |
| institution | arXiv |
| publishDate | 2019 |
| record_format | arxiv |
| spellingShingle | Provably scale-covariant networks from oriented quasi quadrature measures in cascade Lindeberg, Tony Computer Vision and Pattern Recognition Machine Learning This article presents a continuous model for hierarchical networks based on a combination of mathematically derived models of receptive fields and biologically inspired computations. Based on a functional model of complex cells in terms of an oriented quasi quadrature combination of first- and second-order directional Gaussian derivatives, we couple such primitive computations in cascade over combinatorial expansions over image orientations. Scale-space properties of the computational primitives are analysed and it is shown that the resulting representation allows for provable scale and rotation covariance. A prototype application to texture analysis is developed and it is demonstrated that a simplified mean-reduced representation of the resulting QuasiQuadNet leads to promising experimental results on three texture datasets. |
| title | Provably scale-covariant networks from oriented quasi quadrature measures in cascade |
| topic | Computer Vision and Pattern Recognition Machine Learning |
| url | https://arxiv.org/abs/1903.00289 |