Rotation Invariance and Directional Sensitivity: Spherical Harmonics versus Radiomics Features
| Autor: | Michael Unser, Julien Fageot, Vincent Andrearczyk, John Paul Ward, Adrien Depeursinge |
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| Rok vydání: | 2018 |
| Předmět: |
Texture (cosmology)
business.industry Spherical harmonics Pattern recognition 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Wavelet Radiomics Simple (abstract algebra) 030220 oncology & carcinogenesis Sensitivity (control systems) Artificial intelligence business Rotation (mathematics) Mathematics |
| Zdroj: | Machine Learning in Medical Imaging ISBN: 9783030009182 MLMI@MICCAI |
| Popis: | We define and investigate the Local Rotation Invariance (LRI) and Directional Sensitivity (DS) of radiomics features. Most of the classical features cannot combine the two properties, which are antagonist in simple designs. We propose texture operators based on spherical harmonic wavelets (SHW) invariants and show that they are both LRI and DS. An experimental comparison of SHW and popular radiomics operators for classifying 3D textures reveals the importance of combining the two properties for optimal pattern characterization. |
| Databáze: | OpenAIRE |
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