A method and system for simulating surface details of a three-dimensional image

A technology of three-dimensional image and simulation method, applied in image data processing, 3D modeling, instruments, etc., can solve the problem of low fidelity

Active Publication Date: 2017-09-29
WUXI FANTIAN INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The normal line is actually a kind of bump, and the higher the quality of the normal map, the clearer it is, it can be used to describe the appearance of the character, but if you want to depict more real details of the character more realistically, rely on the normal map alone Unable to express realistic effects, such as the pores of the character's skin, the capillaries on the arms, etc.
Therefore, the three-dimensional image simulation technology of the prior art has the defect of low fidelity

Method used

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  • A method and system for simulating surface details of a three-dimensional image
  • A method and system for simulating surface details of a three-dimensional image
  • A method and system for simulating surface details of a three-dimensional image

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Embodiment 1

[0036] figure 1 It is a flow chart of a method for simulating surface details of a 3D image provided by Embodiment 1 of the present invention. This embodiment is applicable to the simulation of various image models in film and television animation and game production scenes. In 3D modeling, two The two models are high model and low model respectively, and then the normal map is baked from the high model to the low model, so that the details of the low model are more bright and dark. The present invention adds a detail method on the basis of the normal map Line maps and detail weight maps further simulate character realism. This method can be executed by various 3D modeling software, such as Zbrush, MAYA, 3DMAX, etc., specifically including the following steps:

[0037] Step 110, create a mesh model, sample normal and detail normal maps, and generate a normal vector for each pixel and the detail normal vector

[0038] Use 3D modeling software, such as Zbrush, MAYA, 3DMAX,...

Embodiment 2

[0054] image 3 A schematic structural diagram of a system for simulating surface details of a three-dimensional image provided in Embodiment 2 of the present invention. The system includes: a normal vector and detail normal vector generation module 310 , a detail weight value acquisition module 320 , a mixed normal vector generation module 330 , and a model calculation module 340 .

[0055] Among them, the normal vector and detail normal vector generation module 310 is used to create a mesh model, sample normal and detail normal maps, and generate a normal vector for each pixel and the detail normal vector The detail weight value acquisition module 320 is used to sample the detail weight map and obtain the weight value w of each pixel of the detail normal; the mixed normal vector generation module 330 is used to convert the normal vector and the detail normal vector Superposition is performed to obtain a mixed normal vector in Model calculation module 340, for adop...

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Abstract

The invention discloses a three-dimensional image surface detail simulation method and system. The method includes the steps that a network model is built, normal and detail normal maps are sampled, the normal vector (please see the formula in the specification) and the detail normal vector (please see the formula in the specification) of each pixel are generated, a detail weight map is sampled, and the weight value w of each pixel of a detail normal is obtained; the normal vector (please see the formula in the specification) and the detail normal vector (please see the formula in the specification) are superposed so that a mixed normal vector (please see the formula in the specification) can be obtained, wherein the formula in the specification is obtained; model calculation is performed through the mixed normal vector. The method overcomes the defects that in the prior art, a three-dimensional image simulation technology is low in fidelity, the fidelity of a three-dimensional image is improved while the rendering frame rate is guaranteed, more detail sense is increased, and a more realistic screen effect is displayed.

Description

technical field [0001] The invention relates to the field of computer graphics, in particular to a method and system for simulating surface details of a three-dimensional image. Background technique [0002] With the development of computer graphics, people's pursuit of image fidelity is getting higher and higher. More and more real images can be described by using the technology of iconography, and the method of normal map can improve the fidelity of 3D image description. In the case of limited computer processing power or when rendering animation is time-limited, normal maps are also a better solution. Recently, normal maps are mostly used in the rendering of CG animations and the production of game screens. Models with high details can be passed through Mapping bakes the normal map, and then assigns it to the normal map channel of the low-end model, so that the surface has a rendering effect of light and shadow distribution, which can greatly reduce the number of faces a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00
CPCG06T17/00
Inventor 张翼
Owner WUXI FANTIAN INFORMATION TECH
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