Higher-order moment-based image projection method and image processing apparatus
AssigneeGE Medical Systems Global Technology Company, LLC
InventorsJerome Knoplioch, Yasuhiro Imai
Life of this patent
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Abstract
For the purpose of providing an image projection method for incorporating all data values along a projection axis on a projection image produced from three-dimensional data, a pixel value G at a point of intersection of the projection axis and projection plane is determined as: 1 G = [LeftBracketingBar] ( ∑ i = 1 n V i / n ) r - ∑ i = 1 n ( V i / n ) r [RightBracketingBar] 1 / r , where the number of three-dimensional data values along the projection axis is denoted by n, a data value is denoted by Vi, and a real number greater than one is denoted by r.
Claims7
A higher-order moment-based image projection method comprising:
- when projecting three-dimensional data onto a projection plane, determining a pixel value at a point of intersection of a projection axis and the projection plane based on:
- 18 P = [LeftBracketingBar] ( ∑ i = 1 n V i / n ) r - ∑ i = 1 n ( V i / n ) r [RightBracketingBar] 1 / r ,
- where the number of three-dimensional data values along said projection axis is denoted by n, a data value is denoted by Vi, and a real number greater than one is denoted by r.
An image processing apparatus comprising:
- three-dimensional data storage means for storing three-dimensional data;
- projection direction specifying means for use by an operator to specify a projection direction;
- higher-order moment-based image projection means for determining a pixel value at a point of intersection of a projection axis and a projection plane based on:
- 19 P = [LeftBracketingBar] ( ∑ i = 1 n V i / n ) r - ∑ i = 1 n ( V i / n ) r [RightBracketingBar] 1 / r ,
- where the number of three-dimensional data values along said projection axis is denoted by n, a data value is denoted by Vi, and a real number greater than one is denoted by r;
- and projection image display means for displaying a projection image.
An image processing apparatus comprising:
- three-dimensional data storage means for storing three-dimensional data;
- projection direction specifying means for use by an operator to specify a projection direction;
- higher-order moment-based image projection means for determining a pixel value G at a point of intersection of a projection axis and a projection plane as:
- 20 G = [LeftBracketingBar] ( ∑ i = 1 n V i / n ) r - ∑ i = 1 n ( V i / n ) r [RightBracketingBar] 1 / r ,
- where the number of three-dimensional data values along said projection axis is denoted by n, a data value is denoted by Vi, and a real number greater than one is denoted by r;
- and projection image display means for displaying a projection image.
Dependencies are inferred from the claim text.