Title :
Using the Hexagonal Grid for Three-Dimensional Images: Direct Fourier Method Reconstruction and Weighted Distance Transform
Author_Institution :
Centre for Image Anal., Uppsala Univ.
Abstract :
An image reconstruction technique for computed tomography (CT) images, the direct Fourier method, is shown to apply to non-standard grids. In CT, the 3D image is obtained by reconstructing 2D slices separately. We propose to use the hexagonal grid for the 2D slices, resulting in 3D images on non-standard grids. Low-level image processing is also considered for these grids - optimal weights to be used for computing the weighted distance transform are calculated
Keywords :
Fourier transforms; computerised tomography; image reconstruction; medical image processing; 3D image; computed tomography image; direct Fourier method reconstruction; hexagonal grid; image reconstruction; low level image processing; weighted distance transform; Computed tomography; Design for manufacture; Filtering; Fourier transforms; Frequency domain analysis; Image processing; Image reconstruction; Interpolation; Iterative methods; Lattices;
Conference_Titel :
Pattern Recognition, 2006. ICPR 2006. 18th International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
0-7695-2521-0
DOI :
10.1109/ICPR.2006.1160
