A Realistic Rendering Method of Layered Structured Face Model

A face model, layered technology, applied in the field of realistic rendering of the face model, can solve the problems of inability to reflect scattering and absorption, lack of ruddy and transparent feeling of the face, and stiff rendering effect, etc., to achieve the effect of improving the sense of reality

Active Publication Date: 2019-10-18
NORTHWEST UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the BRDF method to render the human face does not reflect the scattering and absorption of light in the dermis, so the rendering effect is stiff and lacks the unique ruddy and transparent feeling of the human face

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Realistic Rendering Method of Layered Structured Face Model
  • A Realistic Rendering Method of Layered Structured Face Model
  • A Realistic Rendering Method of Layered Structured Face Model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a real rendering method of a layered mechanism human face model, such as figure 1 shown, including the following steps:

[0032] Step 1, face data preparation, including a 3D model of the face, diffuse reflection texture of the face, normal texture of the face and skin detail texture. Such as image 3 Shown is the original unrendered face model; it looks stilted.

[0033] Step 2, set the light source in the scene to I 1 and I 2 . I 1 Indicates the light source intensity of the incident light on the epidermis (generally natural light, the light intensity is about 100lux to 130lux). I 2 The function of is to simulate the incident light of the scattering phenomenon in the human face dermis. According to the optical characteristics of skin tissue, only about 6% of the light source is diffusely reflected in the epidermis of the face, and most of the light enters the dermis and is emitted after multiple scattering and absorption by the interna...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a real rendering method of a layered mechanism human face model, which includes: step 1, preparing human face data. The human face data includes: a three-dimensional human face model, a diffuse reflection texture of the human face, and a method of the human face. Line texture and skin detail texture; Step 2, change the ambient light intensity to I am , the specular reflected light intensity I of the sebum layer sp , the diffuse reflected light intensity I of the epidermal layer diff and the sum of the subsurface scattered light intensities of the dermal layer (I R2 ,I G2 ,I B2 ) is output to the face model to obtain the final rendering effect I; the present invention can better express the translucent characteristics of the face model and improve the realism of the rendering effect while ensuring real-time rendering.

Description

technical field [0001] The invention belongs to the realistic rendering technology of a three-dimensional model, in particular to a realistic rendering method of a human face model with a layered structure. Background technique [0002] For a long time, how to render a more realistic human face faster has been an important topic in the field of computer graphics, and it is also of great significance to many fields, such as virtual reality, medical simulation, film and television entertainment, and so on. In the prior art, the rendering technology often used in game production software is HLSL (High Level Shader Language), which can quickly and efficiently complete some complex image processing on the display card. A commonly used method is the bidirectional reflectance distribution function (BRDF) model. BRDF assumes that the incident position and exit position of light on the object are at the same point, and does not consider the multiple absorption and scattering phenome...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G06T15/50
Inventor 周明全王恒耿国华
Owner NORTHWEST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap