METHOD FOR PROCESSING IMAGE DATA REPRESENTING A THREE-DIMENSIONAL VOLUME

摘要

A method for processing image data representing a three-dimensional volume, the data comprising image values for a three-dimensional grid of voxels (1), comprises the steps of: starting from a given voxel (2) building up a vector path (10) along a first dimension of the three dimensional volume, connecting a number of voxels of two-dimensional slices of the grid (1) adjacent in the first dimension, the connected voxels representing a spatial neighborhood of the given voxel (2), including structurally related voxels of the three-dimensional grid (1); averaging the image values of the voxels of the vector path (10) to obtain a first averaged value (4), assigned to the given voxel position; repeating the aforementioned steps for a number of voxels; repeating the aforementioned steps on the first averaged values (4), employing vector paths (20) along a second dimension being different from the first dimension, obtaining second averaged values (7); and on the second averaged values (7) repeating the aforementioned steps, employing vector paths (30) along a third dimension being different from the first and the second dimension. Thus, filtered values (40) are obtained that constitute processed image data representing the three dimensional volume.

主权项

1. A method for processing image data representing a three-dimensional volume, the data comprising image values for a three-dimensional grid of voxels, the method comprising the steps of:
a) starting from a given voxel building up an individual vector path along a first dimension of the three dimensional volume, connecting a number of voxels of two-dimensional slices of the grid adjacent in the first dimension, the connected voxels representing a structural neighborhood of the given voxel, which is a spatial neighborhood of the given voxel, including the voxels of the three-dimensional grid that are structurally related to the given voxel; b) starting from a given voxel building up an individual vector path along a second dimension of the three dimensional volume, the second dimension being different from the first dimension, connecting a number of voxels of two-dimensional slices of the grid adjacent in the second dimension, the connected voxels representing a structural neighborhood of the given voxel, which is a spatial neighborhood of the given voxel, including the voxels of the three-dimensional grid that are structurally related to the given voxel; c) starting from a given voxel building up an individual vector path along a third dimension of the three dimensional volume, the third dimension being different from the first and the second dimensions, connecting a number of voxels of two-dimensional slices of the grid adjacent in the third dimension, the connected voxels representing a structural neighborhood of the given voxel, which is a spatial neighborhood of the given voxel, including the voxels of the three-dimensional grid that are structurally related to the given voxel; d) averaging image values of voxels of the vector paths to obtain an averaged value, assigned to the given voxel position; e) repeating steps a) to d) for a number of voxels.