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Unity-3D-based three-dimensional surface reconstruction and rendering method

A volume surface, three-dimensional technology, applied in the field of three-dimensional volume surface reconstruction and rendering based on Unity 3D, can solve the problem of no application and so on

Inactive Publication Date: 2016-08-03
EAST CHINA UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

Although the above method has achieved good results, it has not been applied to Unity3D to make the rendering results more realistic

Method used

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  • Unity-3D-based three-dimensional surface reconstruction and rendering method

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Embodiment Construction

[0018] Step 1, using computer tomography (CT) or magnetic resonance imaging (MRI) to scan the target object to obtain multiple tomographic pictures in BMP format.

[0019] Step 2, use the MovingCubes technology to input multiple pictures in Step 1, and add the boundary of the automatic recognition target to the MovingCubes to obtain the threshold. The principle of recognition is that when the grayscale of the image changes, the first-order directional derivative of the grayscale is locally maximum, or the second-order derivative is zero, that is, the value of the Laplacian function on the stepped edge surface is zero. The Laplacian formula is as follows:

[0020]

[0021] Step 3, MarchingCubes algorithm. According to the multiple tomographic slices in step 1, two adjacent slices are sequentially selected. Then select four adjacent pixel points in the two pictures in turn to form a space cube. For the eight vertices V of the cube i (i=1,2,3,4,5,6,7,8), construct the vert...

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Abstract

The patent puts forward a Unity-3D-based three-dimensional surface reconstruction and rendering method, wherein the method is suitable for 3D printing. The method comprises: (1), three-dimensional image collection and processing are carried out on a target object; slice fault scanning is carried out and curve edge data of the target object are obtained by using a laplace operator; (2), surface data reconstruction of a three-dimensional target object is carried out, an equivalent point position is calculated by using a linear interpolation method, a normal vector of the equivalent point is calculated by using a central difference method, and corresponding surface data of the equivalent point are calculated by using triangular meshing; and (3), surface rendering of the target object is carried out, three-dimensional surface data are read under Unity 3D, reconstructed three-dimensional object surface rendering is carried out by selecting indexes like illumination and colors. Lots of experiments demonstrate that the three-dimensional reconstruction and rendering method is effective and the obtained result is better than that of the existing technical method in terms of three-dimensional and visual effects.

Description

[0001] The invention mainly relates to a new technology for three-dimensional graphics reconstruction and rendering of two-dimensional images, and specifically relates to a MarchingCubes reconstruction method and Mesh rendering technology based on Unity3D. Background technique [0002] Three-dimensional reconstruction is one of the main contents of computer vision technology research, and it is applied in engineering technology and many other fields. Generally, three-dimensional analysis of objects is required to obtain useful information for research or display. The research on 3D reconstruction technology based on 2D images has important practical significance and has a wide range of applications, including archaeology, architecture, material processing, industrial inspection and medical imaging equipment and other fields. [0003] Current 3D reconstruction methods can be roughly divided into two categories: one is volume rendering methods, and the other is surface rendering...

Claims

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Application Information

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IPC IPC(8): G06T3/00G06T15/00
CPCG06T15/005G06T3/08
Inventor 袁玉波汤伟赵婷婷邱文强溥冬梅阮彤高炬冯东雷殷亦超
Owner EAST CHINA UNIV OF SCI & TECH
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