Apparatus and method for detecting objects in computed tomograph

Details Apparatus and method for detecting objects in computed tomograph Apparatus and method for detecting objects in computed tomograph

1998-02-11

2000-05-23

Au, Amelia

Image analysis

Applications

382131, 382154, 382205, 382257, 378 4, 345424, G06K 900, G06K 942, A61B 600

Patent

active

060673664

ABSTRACT:
A method and apparatus for detecting objects in computed tomography (CT) data are disclosed. Erosion of the data can be performed by identifying a neighborhood of voxels surrounding a voxel of interest. If the number of voxels having densities below a predetermined threshold exceeds a predetermined number, then it is assumed that the voxel of interest is a surface voxel of an object and is removed from the object. A connectivity process is then applied to remaining voxels to combine them into objects. A dilation function can then be performed on the eroded object to replace surface voxels removed by erosion. This morphological connected components labeling (CCL) approach separates adjacent objects in the data such that they can be individually labeled and analyzed.

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