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Method and device for generating dental panoramic image on the basis of CBCT image

A panoramic image and dental technology, applied in the field of image processing, can solve problems such as unfavorable diagnosis of dental diseases for doctors, and inability to obtain two-dimensional panoramic images of full-mouth teeth

Active Publication Date: 2016-08-24
FUSSEN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, CBCT can only obtain three-dimensional structural images of oral teeth, but cannot obtain two-dimensional panoramic images of the whole mouth teeth, which is not conducive to the diagnosis of dental diseases by doctors through CBCT images

Method used

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  • Method and device for generating dental panoramic image on the basis of CBCT image
  • Method and device for generating dental panoramic image on the basis of CBCT image

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Embodiment 1

[0021] Figure 1a It is a flow chart of a method for generating a dental panoramic image based on CBCT images provided by Embodiment 1 of the present invention. This embodiment can be applied to generate a two-dimensional panoramic image of a full mouth of teeth based on the three-dimensional data of a cone-beam computed tomography device. In the case of an image, the method may be performed by an apparatus for generating a dental panoramic image based on a CBCT image. The method for generating a dental panorama image based on a CBCT image specifically includes the following steps:

[0022] Step 110, determine seed points in the current axial plane image of the cone beam computed tomography equipment, and use a curve fitting algorithm to process the seed points to generate dental arch lines.

[0023] Among them, the cone beam computed tomography equipment, that is, Cone beam computed tomograhpy, English abbreviation CBCT, its principle is that the X-ray generator performs circ...

Embodiment 2

[0036] Figure 2a It is a flowchart of another method for generating a dental panoramic image based on a CBCT image in Embodiment 2 of the present invention. The technical solution of this embodiment is based on the technical solution of the above-mentioned embodiment, and for determining the gradient factor of the anisotropic diffusion filter formula, the anisotropic diffusion filter formula is used to process the initial dental panoramic images of different scales to generate the final The steps of the dental panorama image are further described, specifically including the following steps:

[0037] Step 210, decompose the initial dental panoramic image into multi-scale decomposed pyramid images by using an image pyramid method.

[0038] Among them, the image pyramid is an effective but conceptually simple structure for explaining images at multiple resolutions. An image pyramid is a collection of progressively lower resolution images arranged in a pyramid shape. Image pyr...

Embodiment 3

[0059] image 3 It is a schematic structural diagram of a device for generating dental panoramic images based on CBCT images in Embodiment 3 of the present invention. Described device specifically comprises:

[0060] A dental arch line generating unit 310, configured to determine a seed point in the current axial plane image of the cone beam computed tomography device, and process the seed point using a curve fitting algorithm to generate a dental arch line;

[0061] The first image generation unit 320 is configured to take the curved surface where the dental arch line is located as the central surface, and calculate the human tissue density CT value corresponding to the pixel point on the central curved surface according to the set sampling thickness, according to the human tissue Density CT values ​​generate the initial dental panoramic image;

[0062] The second image generating unit 330 is configured to determine a gradient factor of an anisotropic diffusion filter formu...

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Abstract

The invention discloses a method and device for generating a dental panoramic image on the basis of a CBCT image. The method comprises steps of: determining a seed point in a current axial surface image of a CBCT apparatus, processing the seed point by using a curve fitting algorithm to generate a dental arch line; using a curve surface where the dental arch line is located as a central curve surface, computing body tissue density CT values corresponding to the pixels in the central curve surface according to a set sampling thickness, and generating initial dental panoramic images according to the body tissue density CT values; and determining the gradient factor of an anisotropic diffusion filter formula and processing the initial dental panoramic images with different scales by using the anisotropic diffusion filter formula to generate an final dental panoramic image. The method and device achieve a purpose of obtaining the two-dimensional panoramic image of the entire teeth by using the image processing algorithm on the basis of CBCT three-dimensional data.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of image processing, and in particular to a method and device for generating a dental panoramic image based on a CBCT image. Background technique [0002] With the improvement of living standards, people pay more and more attention to dental health. Dental imaging equipment plays a vital role in the diagnosis and treatment of dental diseases. [0003] At present, by reconstructing the three-dimensional data collected by dental digital tomography equipment (also known as cone beam computed tomography equipment, English abbreviation CBCT), the three-dimensional structural images of oral teeth are obtained, which is beneficial to the surgical planning and treatment of dental diseases. However, CBCT can only obtain three-dimensional structural images of oral teeth, but cannot obtain two-dimensional panoramic images of full-mouth teeth, which is not conducive to doctors' diagnosis of dental...

Claims

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Application Information

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IPC IPC(8): G06T3/00G06T3/40
CPCG06T3/4038G06T2207/30036G06T2207/10081G06T2207/20024G06T3/067
Inventor 丁亮刘金池吕广志
Owner FUSSEN TECH CO LTD
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