Seamless texture mapping method of three-dimensional model

Abstract

The invention discloses a seamless texture mapping method for a three-dimensional model. The method comprises the following steps: inputting a known three-dimensional model, an RGBD image, a projection matrix and a projection matrix error; screening out an RGB image which completely covers the three-dimensional model and has the minimum pose estimation error sum; calculating a pose relationship between each surface patch in the three-dimensional model and the screened RGB image, and determining a candidate viewpoint corresponding to each surface patch; eliminating the candidate viewpoints withwrong textures in all the candidate viewpoints; selecting an optimal viewpoint from the remaining candidate viewpoints after elimination to perform texture mapping; adjusting the color and brightnessof the three-dimensional model after texture mapping; and if occlusion exists in the optimal viewpoint, mapping historical textures to an occlusion area of the three-dimensional model after joint fusion processing to obtain a complete texture mapping three-dimensional model. According to the method, the brightness color difference of adjacent textures is effectively reduced, texture distortion caused by joint fusion is inhibited, and the accuracy and consistency of the overall texture of the three-dimensional model are improved.

Description

technical field [0001] The present application belongs to the technical field of computer vision, and in particular relates to a seamless texture mapping method of a three-dimensional model. Background technique [0002] The texture mapping of the 3D model is to map the texture image with color information onto the surface of the 3D model in space, and endow the surface texture characteristics of the 3D model. In the process of 3D reconstruction, the 3D model obtained through grid construction does not have texture features. In order to make the 3D model have better visual effects, it is usually necessary to perform texture mapping on the 3D model. How to obtain objects through a set of images A more realistic and seamless texture on the surface is an important step in 3D modeling, which affects the details of the model surface and the realism of the 3D model. [0003] The existing texture mapping scheme includes: obtaining multiple texture images corresponding to the 3D mo...

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Problems solved by technology

[0007] 1. If the target in the selected texture image is occluded, the texture features of the occluded area cannot be mapped to the 3D model. If no screening is performed, the texture image with too many viewpoints will cause the texture block to be finely divided, and the mapping effect is poor

[0008] 2. Due to exposure differences, color differences, and precision problems of adjacent texture mapping images, the texture at the texture seam will be dislocated, blurred, etc., and the texture effect at the mapped seam is poor

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