Three-dimensional model surface pattern flattening extraction method based on rendering sampling

Abstract

The invention discloses a three-dimensional model surface pattern flattening extraction method based on rendering sampling, and the method comprises the following steps: S1, constructing a sampling grid under the operation of a specific mode for a surface region which needs to be subjected to pattern flattening extraction in a three-dimensional model; s2, performing rendering sampling on the constructed sampling grid, and calculating a rendering color value of the rendering sampling; s3, adopting a two-dimensional array to organize and temporarily store rendering color values; and S4, carrying out image coding on the rendering color value temporarily stored in the organization, and outputting and storing a two-dimensional picture file. According to the three-dimensional model surface pattern flattening extraction method, the whole process of three-dimensional model surface pattern flattening extraction is completed, the two-dimensional picture output result of the surface area subjected to pattern flattening extraction is obtained, three-dimensional models of various sources are compatible in the method, good universality is achieved, the method does not depend on a private algorithm of any specific platform, and the method is suitable for large-scale popularization and application. The method is suitable for cross-platform use.

Description

technical field [0001] The invention relates to the field of computer graphics, in particular to a method for flattening and extracting surface patterns of a three-dimensional model based on rendering sampling. Background technique [0002] A 3D model is a polygonal representation of an object, usually displayed on a computer or other video device. Objects shown may be real-world entities or fictional objects. Anything that exists in physical nature can be represented by a three-dimensional model. [0003] In the actual application process, the 3D model is often used as a multi-angle display to the user. The user can perform translation, rotation and zoom operations on the 3D model to observe the specific details of their interest; the above display methods focus more on the 3D model. In terms of its shape, but in addition to the shape, there are also a large number of patterns on the surface of the 3D model. According to the different generation methods of the 3D model, a...

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Problems solved by technology

[0005] At present, although the background technologies such as rendering, sampling, and generation in the fields of digital image processing, computer graphics, and computer vision are relatively complete, the methods for flattening and extracting the surface patterns of 3D models are scarce and the adaptability is not strong.

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