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Interactive controlling method for selecting 3-D image body reconstructive partial body

A technology of three-dimensional image and interactive control, applied in the direction of 2D image generation, image data processing, using manual input to modify/create images, etc., can solve the problems of limited range, limited direction of reconstruction projection plane, etc., to reduce occlusion and facilitate operation And observation, the effect of good observation effect

Inactive Publication Date: 2005-10-26
蔡涛
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Since this method restricts the cube to always have four sides parallel to the depth coordinate axis, the projection direction of the cube cannot cover any direction, and the spatial position covered by the cube is also limited, which limits what the user can observe. range
Although this definition method can be used to expand the coverage based on the front, left, and top three viewing directions, the corresponding reconstruction projection plane direction is still limited

Method used

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  • Interactive controlling method for selecting 3-D image body reconstructive partial body
  • Interactive controlling method for selecting 3-D image body reconstructive partial body
  • Interactive controlling method for selecting 3-D image body reconstructive partial body

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Embodiment Construction

[0024] Such as figure 1 , figure 2 Shown: X-Y coordinates are the plane coordinates of the computer screen, Z is the depth coordinates. First draw a rectangle abcd on the X-Y coordinate plane, then stretch the rectangle abcd along the Z axis to form a cube abcd-a'b'c'd'e', the coordinate system of the cube is the same as the screen coordinate system. Select the rectangle abcd closest to the computer screen as the projection surface, draw its sides with solid lines, draw the rectangle a'b'c'd'e' parallel to it with dotted lines, and draw the other sides with dotted lines. Vertices a, b, c, d are marked with circles and red, and vertex a' is marked with blue. Select vertex a as the origin of the three-dimensional transformation of the polyhedron, and select coordinate axis Y as the rotation coordinate axis of the polyhedron. The above-mentioned defined and marked cube is used as a data volume for three-dimensional image volume reconstruction, wherein the object coordinate or...

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Abstract

The invention is an interactive controlling method for the reformed part of a 3D medicinal image, using a projection image of the original 3D data on a coordinate plane as a background and polyhedron displaying reference plane for a user to draw an arbitrary 2D polygon on the reference plane, stretching the polygon in the direction of the depth of a computer to compose a polyhedron, and adopting different colors, lines and so on to mark the sides, top points and reference axes of the polyhedron; and using the polyhedron as a selected data body in reforming 3D image so that the user can select the point and reference axes of a local reference frame of the polyhedron and control the selected data body by changing shape, 3D spatial position, and rotating direction of the polyhedron with mouse or keyboard; besides, displaying the change result of position, direction and structure of the polygon on the screen.

Description

technical field [0001] The invention relates to the technical field of computer three-dimensional medical images, and relates to an interactive control method for volume selection of three-dimensional medical image volume reconstruction parts. Background technique [0002] The purpose of 3D medical image reconstruction is to restore the image observed from a 3D perspective from various medical tomographic image data, so as to provide a more intuitive basis for doctors' diagnosis. The methods of 3D image reconstruction include surface reconstruction and volume reconstruction. The original data of 3D medical images are data points arranged in a 3D lattice. Simple projection reconstruction, the user can only see the projection of these points in the front, top, and right viewing directions. Complex 3D image reconstruction, by imitating the imaging process of a camera, produces a reconstructed image that simulates the observation effect of the human eye in any direction. Among...

Claims

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Application Information

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IPC IPC(8): G06T11/00
Inventor 蔡涛
Owner 蔡涛