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Three-dimensional color model image processing method based on texture mapping

A texture mapping and color model technology, applied in image data processing, 3D modeling, instruments, etc., can solve the problems of inability to handle gaps, and the transition effect is difficult to achieve smooth, to maintain consistency and authenticity, and eliminate color gaps. Effect

Active Publication Date: 2016-09-21
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] Aiming at the shortcomings of the existing technology that the transition effect formed at the texture boundary is difficult to achieve smoothness, and cannot handle too obvious gaps, etc., the present invention proposes a three-dimensional color model image processing method based on texture mapping

Method used

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  • Three-dimensional color model image processing method based on texture mapping
  • Three-dimensional color model image processing method based on texture mapping
  • Three-dimensional color model image processing method based on texture mapping

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Embodiment 1

[0025] Such as figure 1 As shown, this embodiment realizes the mapping of the three-dimensional model texture through the following steps:

[0026] 1) Calculate the texture mapping relationship. Use the RGB-D (color with depth information) camera to obtain the 3D model of the actual object and a series of 2D color images corresponding to the object, and establish the correspondence between the vertices of the 3D model and the pixels of the 2D image, that is, the texture mapping relationship .

[0027] Such as figure 2 As shown, the 3D model and 2D image are obtained by the KinectFusion method, that is, the moving KINECT camera is scanned around the target. The KinectFusion method is used to calculate the camera position and angle of each 2D image relative to the 3D model, and the corresponding relationship between each vertex of the 3D model and the pixel points in the 2D image is obtained. Then, the texture on the model, that is, the two-dimensional image stitching probl...

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Abstract

A three-dimensional color model image processing method based on texture mapping comprises the steps of firstly determining a boundary point of each texture block on a three-dimensional model according to a mapping relationship between the apex of a three-dimensional model and each two-dimensional image, then updating the color of the boundary point through a boundary updating equation, updating the color of each apex which is adjacent with the boundary point in the texture block according to an inner texture updating equation, and repeating the two updating processes until the sum of color differences between the apexes before and after updating is smaller than a preset value. According to the three-dimensional color model image processing method, the boundary point and the texture in the texture block are respectively solved, thereby weakening relation restraint among points in updating the color of the boundary point and restrictive conditions to color change in updating the color in the texture block, remarkably reducing relatively large difference between the color of the texture block and the color of the boundary, integrally changing the color of the whole texture block according to the color at a seam, and keeping consistency and authenticity of the texture.

Description

technical field [0001] The invention relates to a technology in the field of computer image processing, in particular to a texture mapping-based three-dimensional color model image processing method. Background technique [0002] Three-dimensional reconstruction refers to the establishment of mathematical models suitable for computer representation and processing of objects. It is the basis for processing, operating and analyzing its properties in a computer environment, and is also a key technology for establishing a virtual reality that expresses the objective world in a computer. 3D reconstruction is a common scientific problem and core technology in the fields of computer-aided geometric design, computer graphics, computer animation, computer vision, medical image processing, scientific computing and virtual reality, and digital media creation. [0003] After searching the existing technologies, it was found that Lempitskyi et al. transformed the texture mosaic problem o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
CPCG06T17/00
Inventor 林巍峣王琰宁王晓琦
Owner SHANGHAI JIAO TONG UNIV
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