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Fast volume rendering method of inwall of cavum-type viscera

A technology of volume rendering and viscera, which is applied in the field of image processing, can solve problems affecting the speed of volume rendering, and achieve the effect of speeding up

Inactive Publication Date: 2007-05-16
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
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Problems solved by technology

Its disadvantage is that when this method performs volume rendering on the inner wall of a hollow organ, many voxels that are a certain distance away from the inner wall surface will still be considered for rendering operations
However, these voxels have no effect on the image observed at the current viewing angle. It still takes about 1 second to render the overall data of 256×256×69 scale on the microcomputer platform, which affects the speed of volume rendering

Method used

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  • Fast volume rendering method of inwall of cavum-type viscera

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Embodiment Construction

[0016] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and processes are provided, but the protection scope of the present invention is not limited to the following implementations example.

[0017] The specific steps of this embodiment are as follows:

[0018] (1) Segment cavity binarized volume data from medical raw images.

[0019] (2) Carry out morphological expansion operation on the binarized volume data of the cavity.

[0020] (3) Exclusive OR operation is performed on the expanded volume data and the original cavity volume data to obtain the organ wall data.

[0021] (4) Find the corresponding voxel in the original medical image, and use it as the foreground, and set the rest points as the background to zero, and ignore it.

[0022] (5) Perform volume renderi...

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Abstract

This invention relates to one graph process technique hollow chamber organs inner wall rapid drawing method, which comprises the following steps: firstly dividing medical original images to get hollow chamber two values data; then processing three-dimensional shape expansion computation on one data; then processing and or operation on expanded two values data and original two values to get organ wall two value data; then using this data in medical original images to find out all prospect element; finally processing drawing on these elements.

Description

technical field [0001] The present invention relates to a method in the technical field of image processing, in particular to a rapid volume rendering method for the inner wall of a hollow organ. technical background [0002] At present, using medical imaging data such as CT and MRI, virtual endoscopy technology is mainly used for three-dimensional visualization reconstruction of the inner wall of hollow organs. This technology places the viewing angle in the cavity inside the organ, and then observes the inner wall of the organ from the internal viewing angle, thus simulating the observation effect of traditional optical endoscope. In the current virtual endoscopy technology, there are mainly two methods for reconstructing the inner wall of organs: surface rendering and volume rendering. Surface rendering is based on the extraction of the isosurface of the segmented cavity data, and only the surface of the inner wall is reconstructed, so the effect is not realistic enough....

Claims

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Application Information

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IPC IPC(8): G06T15/00A61B10/00A61B19/00A61B5/00
Inventor 曹立基赵俊
Owner SHANGHAI JIAO TONG UNIV
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