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Method and apparatus for imaging volume data using voxel values

  • US 5,381,518 A
  • Filed: 12/18/1992
  • Issued: 01/10/1995
  • Est. Priority Date: 04/14/1986
  • Status: Expired due to Fees
First Claim
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1. A method of generating a two dimensional representation of a three dimensional data set along a selected orientation of view comprising the steps of:

  • generating a first image volume representing said three dimensional data set;

    storing said first image volume in a first image memory comprising a plurality of volume elements (voxels);

    generating a new background plane of voxels of said image volume by combining in a host computer a background plane of voxels of said image volume with a foreground plane of voxels of said image volume along a selected orientation of view, said new background plane of voxels having color and opacity values determined as a function of the color and opacity of the background plane of voxels and the foreground plane of voxels, wherein said function is given by;

    
    
    space="preserve" listing-type="equation">BG'"'"'=FG+(1-(FG)(A))(BG)where;

    BG'"'"'=the color and opacity components of the corresponding voxel in said new background plane;

    FG=the color and opacity components of a selected voxel;

    A=the opacity of said selected voxel;

    BG=the color and opacity components of previously combined voxels;

    successively repeating in said host computer the prior step for each new background plane of voxels and successive foreground plane of voxels through an nth foreground plane of voxels where n represents the total number of said foreground planes of voxels.

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