Method for engraving three-dimensional model based on line pattern

A 3D model and pattern technology, applied in 3D image processing, image data processing, instruments, etc., can solve the problems of simple, time-consuming engraving effect, large interactive workload, etc.

Active Publication Date: 2014-11-12
ZHEJIANG UNIV OF TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of large interactive workload, time-consuming and simple engraving effect in the surface texture synthesis of the existing 3D mesh model, the present invention provides a two-dimensional line-based Three-dimensional engraving method for drawing patterns

Method used

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  • Method for engraving three-dimensional model based on line pattern
  • Method for engraving three-dimensional model based on line pattern
  • Method for engraving three-dimensional model based on line pattern

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Embodiment Construction

[0021] The technical method of the present invention and various sculpting effects of three-dimensional models generated will be further described and explained in detail below in conjunction with the accompanying drawings.

[0022] Refer to attached figure 1 ---attached Figure 4 , a three-dimensional model engraving method based on a line drawing pattern, the described method comprises the following four steps:

[0023] 1) The user inputs the two-dimensional line drawing pattern that needs to be engraved, and the method preprocesses the input pattern, and extracts the center line of the line in the input line drawing image as the engraving contour line through the edge contraction operation;

[0024] Draw the input two-dimensional line pattern (as attached figure 1 ) into a grayscale image, and calculate the gradient value of each pixel, and use the pixel whose gradient value is greater than 10% of the gradient maximum value as the pixel to be moved, and record the total n...

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Abstract

The invention discloses a method for engraving a three-dimensional model based on a line pattern. The method for engraving the three-dimensional model based on the line pattern comprises the steps that the two-dimensional line pattern needing to be engraved by a user is input, the input pattern is pre-processed according to a method, and the line center of the input line pattern is extracted by conducting edge shrinkage to serve as an engraving contour line; for different types of three-dimensional models, parameterization is conducted on areas to be engraved on the surface of the model; the obtained two-dimensional engraving contour line is discretized and is mapped into discrete engraving lines on the surface of the three-dimensional model through parameterized mapping; the distances between the peak to be engraved on the three-dimensional model and the three-dimensional engraving lines are calculated, the horizontally-moving distance and the direction of the peak of the area to be engraved are determined according to an engraving function, and the peak to be engraved is moved horizontally, so that the three-dimensional engraving effect of the model is achieved.

Description

technical field [0001] The patented design of the present invention aims at the two-dimensional line drawing pattern input by the user, and provides a method that can conveniently and quickly generate the engraving effect of the pattern on the three-dimensional model. Background technique [0002] As a mainstream representation of the shape of 3D objects, 3D models have been widely used in digital entertainment industry, industrial design field, virtual reality and other fields. The representation properties of the 3D model include two aspects: the geometric properties of the 3D model (such as vertex position information and topological connection information between vertices) and the appearance properties of the 3D model (such as surface material properties, geometric texture and color texture information, etc.). In order to make the generated 3D model more realistic and increase the aesthetics and artistry of the 3D model, 3D feature textures are usually added to the 3D mo...

Claims

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Application Information

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IPC IPC(8): G06T15/00
Inventor 缪永伟陈敏燕方旭东陈佳舟刘震
Owner ZHEJIANG UNIV OF TECH
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