Patent · US Active

Method for filtering of tomographic 3D displays on the basis of the reconstruction of volume data

US7804988B2 · kind B2 · utility

5Cited by

3References

22Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Thomas Flohr · Uehlfeld, DE
Michael Grasruck · Erlangen, DE
Rainer Raupach · Heroldsbach, DE

Key dates

Filing date	Aug 16, 2006
Grant date	Sep 28, 2010
Priority date	—
Expiry date	Jul 29, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30004
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A filter method for tomographic 3D displays is disclosed, in which a volume model is used for display, which reproduces the volume of the examination object in the form of a large number of three-dimensional image voxels, and the image value of each voxel reproduces one object-specific characteristic of the examination object in this volume. According to the method, the original image voxels are processed using a 2D filter which is the same over the entire image area, and two different linear filters with selected directions which are obtained from the extremes of the previously calculated variances thus resulting in three data records with differently filtered image voxels, and in which, furthermore, the original image voxels and the filtered image voxels are mixed using local weights to form a result image. In addition, original image data can be processed using a steepening linear filter with a filter direction in the direction of the maximum local variance, resulting in a data record which is mixed into the final image with locally different weighting.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.