| 摘要 |
<p>The purpose of the present invention is to provide a technology which can perform noise elimination on a three-dimensional image by using an isotropic three-dimensional adaptive filter. With respect to a medical image including a three-dimensional reconstructed image (40) of a subject, the present invention sets three-dimensional regions of interest (41a-41d) centred on target pixels, and detects the travelling directions of structures (42a-42c) present in the three-dimensional regions of interest on the basis of the distribution of pixel values included in the three-dimensional regions of interest. The present invention sets three-dimensional spatial filters, the shapes of which are aligned in the travelling directions of the structures, or if there is no structure, sets a three-dimensional smoothing filter which does not take structural shapes into account, and performs noise elimination processing on the three-dimensional areas of interest by using the three-dimensional spatial filters.</p> |
