Surface Extraction Method, Surface Extraction Device, and Program
First Claim
1. A surface extraction method characterized by comprising:
- a first step of investigating, in a three-dimensional space that is divided into regions having a lattice shape, in units of straight-line rows of the regions, whether or not constituting regions that constitute an object which is shown in the three-dimensional space exist; and
a second step of extracting, as surfaces of the object, the constituting regions that exist at ends of a straight-line row.
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Abstract
A surface extraction method capable of improving accuracy of extraction of surfaces of an object, a surface extraction device, and a program are proposed. A voxel space that is divided into voxels having a lattice shape, and whether or not object constituting voxels that constitute an object which is shown in the voxel space is investigated in units of voxel rows of the voxels. Ends of the continuous object constituting voxels in the voxel rows are extracted as surfaces of the object. Straight-line rows are used as units, and intermediate portions of continuous constituting regions in the straight-line rows are ignored. Thus, even when a region that does not constitute the object exists inside the object, the region that does not constitute the object can be prevented from being falsely extracted as a surface of the object without investigation of the same region two times or more.
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Citations
5 Claims
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1. A surface extraction method characterized by comprising:
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a first step of investigating, in a three-dimensional space that is divided into regions having a lattice shape, in units of straight-line rows of the regions, whether or not constituting regions that constitute an object which is shown in the three-dimensional space exist; and a second step of extracting, as surfaces of the object, the constituting regions that exist at ends of a straight-line row. - View Dependent Claims (2, 3)
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4. A surface extraction device characterized by comprising:
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a work memory; and an image processing section that performs image processing with the work memory, the image processing section investigating, in a three-dimensional space that is divided into regions having a lattice shape, in units of straight-line rows of the regions, whether or not constituting regions that constitute an object which is shown in the three-dimensional space exist, and extracting, as surfaces of the object, the constituting regions that exist at ends of a straight-line row.
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5. A program characterized by causing a control section that controls a work memory to perform:
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investigating, in a three-dimensional space that is divided into regions having a lattice shape, in units of straight-line rows of the regions, whether or not constituting regions that constitute an object which is shown in the three-dimensional space exist; and extracting, as surfaces of the object, the constituting regions that exist at ends of a straight-line row.
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Specification