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Grain synthesizing method based on multiple master drawings

A texture synthesis and sample image technology, applied in image data processing, 3D image processing, instruments, etc., can solve the problems of texture deformation, no natural mapping, difficult problems, etc., and achieve the effect of strong randomness of texture

Inactive Publication Date: 2005-01-26
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

[0004] In computer graphics, texture mapping technology has achieved great success, but there are three serious problems: first, the source of texture is relatively single
Hand-drawn pictures can meet artistic needs, but it is difficult to be as real as photos; and photos, as textures, are usually small and cannot cover the entire surface of the object
At this time, simple pasting will visually cause artificial traces
Second, there is no natural mapping from texture space to natural space, so the texture will be severely deformed when mapping
Third, texture mapping takes a lot of memory and bandwidth
However, the existing texture synthesis uses a fixed scanning line method, so the result of the synthesis lacks naturalness

Method used

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  • Grain synthesizing method based on multiple master drawings
  • Grain synthesizing method based on multiple master drawings
  • Grain synthesizing method based on multiple master drawings

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Embodiment Construction

[0027] Such as figure 1 As shown, the texture synthesis method based on various graphs of the present invention adopts the following steps:

[0028] (1) Input the size of the texture image to be synthesized, the size and number of the seeds of the texture sample map, and the proportion of the seeds from each texture sample map in the texture image to be synthesized, and according to the size of the input synthetic texture image, Create a composite texture image cache.

[0029] The so-called "seed size" refers to a block image of n×n pixels. In general, n=1, 2, 3, 4, 5. If the value of n is too large, it becomes a block-based texture synthesis method. In this way, the user's control ability is weakened. The larger the number of seeds, the more similarities between the synthesized texture image and the sample image; on the contrary, the less similarity between the synthesized texture image and the sample image. The "proportion of the seed of the texture sample map in the tex...

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Abstract

This invention is a vein synthesis method based on multi-pattern. By utilizing existing vein pattern, it scatters the seeds on the synthesized vein image buffer memory random according to the size of synthesized vein, the size and number of seeds that selected by user and different vein's proportion in the new synthesized vein. Then synthesizing vein using the vein synthesis method that L-shape based for all seeds in the four horizontal and vertical direction, until all the pixels in the synthesized vein image buffer memory have been synthesized.

Description

technical field [0001] The invention belongs to the technical field of computer virtual reality, in particular to a method for generating a new texture image by using an existing texture image, which can be used for constructing and drawing a realistic virtual environment. Background technique [0002] In the real world, there are very rich texture details on the surface of objects, and people can distinguish various objects with the same shape according to them. Therefore, the simulation of object surface texture details plays a very important role in realistic graphics rendering technology. How to effectively express these texture details in computer-generated graphics has always been a hot issue in the research of computer graphics and virtual environment construction and rendering technology. [0003] There are two main approaches to simulating texture detail on computer-generated objects. One is to model surface details with polygons or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/20
Inventor 齐越赵沁平
Owner BEIHANG UNIV
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