Method and device for manufacturing top layer pattern on surface of three-dimensional object

Abstract

The invention discloses a method and device for manufacturing a top layer pattern on the surface of a three-dimensional object. The method comprises the following steps: unfolding an object model intoa plane; manufacturing a top-layer pattern map, wherein the top-layer pattern map is partially overlapped with the unfolded pattern of the object model plane; defining a first color value of each vertex according to each vertex coordinate expanded by the object model plane, and defining a second color value of the object at each vertex coordinate by using a top-layer pattern map, with the top-layer pattern map at least comprising at least one attribute value for indicating a weight value of a top-layer pattern on the surface of the object; and determining a final color value of each vertex according to the at least one attribute value, the first color value and the second color value. According to the technical scheme, the manufacturing amount of the chartlet can be reduced, the existingchartlet can be repeatedly used, the loading amount of the model is reduced, the operation load of a CPU and a GPU is reduced, and good compatibility is achieved.

Description

technical field [0001] The present application relates to the field of image processing, in particular to a method and device for making or generating top-layer patterns on the surface of a three-dimensional object. Background technique [0002] When the model of the object is displayed on the computer, it generally needs to be realized through texture rendering, and mapping is one of the necessary processes. Traditionally, for the top layer of the surface of the object Figure 1 Three options are generally used. [0003] The first solution is to make a fully combined texture. For example, suppose an object has a surface of 3 different colors when the top layer pattern is not used, and then has 3 different top layer patterns that can be applied. A total of 9 textures need to be made according to the unfolded plane of the object. Different textures are used to display the combination of all colors and all top-level patterns; however, this technical solution requires a lot of...

AI Technical Summary

Problems solved by technology

[0003] The first solution is to make a fully combined texture. For example, suppose an object has a surface of 3 different colors when the top layer pattern is not used, and then has 3 different top layer patterns that can be applied. A total of 9 textures need to be made according to the unfolded plane of the object. Different textures are used to display the combination of all colors and all top-level patterns; however, this technical solution requires a lot of work, and the number of textures produced is large, and the previously produced textures without top-level patterns cannot be reused, and a large number of textures will increase the program. The size of the data affects the loading time and takes up more GPU memory

[0004] The second solution is to make an additional object model suspended above the original object, and apply the texture of the top layer pattern to this additional model; this technical solution needs to make an additional model, which brings an additional burden to the CPU, and due to It is suspended above the original object, there may be a problem of position deviation or poor surface fit; if a large-area suspension model is used, in order not to affect the unmasked part of the original object, a transparent channel must be used, and then the GPU extra burden

This solution has the widest scope of application, but it also has the largest performance overhead. It has very high requirements on hardware, and it is difficult to apply it on a large scale on mobile platforms.

[0006] When rendering a car model, it is necessary to display various styles of top-layer patterns (garments) on the car body according to the preset requirements. The size, color, and position of the top-layer patterns are different, and the original paint color of the car body cannot be affected. Which of the above two existing technologies is adopted, the manufacturing process is relatively complicated and the efficiency is relatively low, and a large amount of manpower, material resources, and financial resources need to be invested, so it is necessary to find another better technical solution to at least solve the problem to a certain extent. At least some of the above deficiencies

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