发明名称 |
Space carving in 3D data acquisition |
摘要 |
Three-dimensional scanning is improved with the use of space carving to exclude certain scan results from processing and display. Using space carving techniques, a spatial matrix is maintained to store data on volumetric regions (or voxels) known to be empty. By excluding or modifying processing of outlier data from within these unoccupied voxels, a three-dimensional reconstruction process can achieve concurrent improvements in accuracy and speed. In addition, a real time display of scan results can be improved by modifying how such outliers are rendered. |
申请公布号 |
US9245374(B2) |
申请公布日期 |
2016.01.26 |
申请号 |
US201214000446 |
申请日期 |
2012.02.17 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
McQueston James H.;Kriveshko Ilya A. |
分类号 |
G06T15/08;A61B6/14;A61B6/00;A61C19/04 |
主分类号 |
G06T15/08 |
代理机构 |
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代理人 |
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主权项 |
1. A method comprising:
storing a spatial matrix in a memory, the spatial matrix including information for a plurality of voxels in a mesh of a scan space; obtaining three-dimensional data from an object within the scan space using a scanner; identifying a one of the plurality of voxels in the mesh that is unoccupied; storing an indication in the spatial matrix for a modified processing of data from the one of the plurality of voxels, thereby identifying a prohibited volume within the scan space; and processing a portion of the three-dimensional data that is not in the prohibited volume according to an unmodified processing and processing a second portion of the three-dimensional data that is in the prohibited volume according to the modified processing, wherein the modified processing includes detecting a point in the prohibited volume and displaying the point for a decay time with the second portion of the three-dimensional data. |
地址 |
Saint Paul MN US |