Image-based texture generation method and system

Abstract

The present invention discloses an image-based texture generation method. The method comprises the following steps that: S1, the three-dimensional model and color coding index table of a target to be generated are established, and the index table are mapped onto the surface of the three-dimensional model as textures; S2, at least two images of the target to be generated at different angles are obtained; S3, outer contour matching is performed on the images and the three-dimensional model; S4, the index table is utilized to index the images which have been subjected to the outer contour matching, and the texture features of each of the images of the target to be generated are extracted; S5, different texture features are fused; and S6, the fused textures are mapped onto to the surface of the three-dimensional model as surface textures. According to the texture generation performed according to the steps of the method of the present invention, the textures can be generated with manual texture drawing not required; and accurate mapping relations can be established with manual adjustment of the locations of geometric model vertexes and texture details not required. The method has the advantages of high efficiency, simplicity and high automation degree.

Description

technical field [0001] The invention relates to the fields of image processing and computer graphics, in particular to an image-based texture generation method and system. Background technique [0002] Realistic simulation has long been an important research direction in the field of computer vision, and high realism, as a decisive indicator to weigh whether the simulation effect conforms to objective facts in computer rendering simulation, has attracted attention from all sides. [0003] In the prior art, Kenji Matsushita and Toyohisa Kaneko have developed an efficient and convenient texture mapping method for the surface of a three-dimensional object. Its research is based on the premise that the data of the 3D reconstruction model is known. Only one digital camera is used to shoot the real target, and the texture of the target in the real shot is used to texture the 3D reconstruction model, so as to achieve a high sense of reality. method. The method is divided into two...

AI Technical Summary

Problems solved by technology

However, this method needs to sample texture information under different environmental changes, so the calculation of image sequence storage and compression is very expensive.

[0005] In addition, currently in the animation and game industries, the method of manual drawing after unwrapping uv is widely used. After the two-dimensional unwrapping of the three-dimensional model is carried out by using commercial tools and uvw unwrapping technology, the surface patches in the mapped area are accurately textured by manual processing. Drawing, strong editability, but to obtain high-realistic textures requires a considerable investment of human resources with good art skills, and the method is not automatic enough, and the efficiency is low

[0006] To sum up, the existing texture generation methods are complex and cannot perform high-realistic texture mapping flexibly and efficiently.

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