CN111882628A - Method for rendering real-time behaviors of 3D digital virtual human based on WebGL - Google Patents
Method for rendering real-time behaviors of 3D digital virtual human based on WebGL Download PDFInfo
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Abstract
The invention relates to the field of real-time rendering of 3D digital virtual people (also called A.I digital people, 3D digital people, virtual images and virtual even images), mainly realizes simulation, simulation and learning of real communication and interaction of human beings in a browser through a WebGL technology, greatly improves the efficiency and quality of a universal intelligent dialogue system (commonly called a dialogue robot or a chat robot), solves the problems of poor compatibility and poor adaptability of the 3D digital virtual people real-time rendering technology, and greatly applies a threshold and the use cost. 1. The behavior rendering of the 3D digital virtual human on various browsers is realized by using a WebGL technology; 2. real-time simulating the expression, mouth shape and limb behaviors of human beings in the real communication and interaction process by an intelligent bionic algorithm; 3. the method has strong cross-platform capability, easily realizes the application of the 3D rendering technology on the platforms such as iOS, Android, Windows, Mac OS and Linux by being compatible with various mainstream browsers, gets rid of the dependence on the performance of terminal hardware, and greatly reduces the application deployment threshold and the use cost. According to the invention, through a series of technical methods, the application capability and range of the 3D digital virtual human are improved to the maximum extent, and the real interaction and conversation of human can be simulated, simulated and restored, so that the aim of carrying out contactless communication and interaction between the human and the 3D character is fulfilled.
Description
One, the technical field
The invention relates to the fields of 3D modeling, WebGL real-time rendering, emulation, neural network and deep learning, NLP intelligent dialogue system and the like, in particular to the realization of real-time emulation, simulation and learning of a 3D digital virtual human in a browser.
Second, background Art
The current 3D digital avatar (also known as "a.i digital person", "3D digital person", "avatar", or "virtual idol") technology is generally implemented by 3D scanning, motion capture, CG animation, etc. which are not used in the movie industry, and has the following problems:
1. besides the application in the fields of movie shooting, cartoon making and the like, the more common commercial application is difficult to obtain due to the overhigh making cost;
2. the method has the advantages that professional equipment and technologies such as motion capture, 3D scanning and CG animation are required, the manufacturing threshold is too high, and common people are difficult to relate to the method;
3. can not be effectively combined with the mainstream application technology to provide application for the public users.
Third, the invention
The invention aims to provide a method for rendering real-time behaviors of a 3D digital virtual human based on WebGL, which comprises the following steps:
1) the behavior rendering of the 3D digital virtual human on various browsers is realized by using a WebGL technology;
2) real-time simulating the expression, mouth shape and limb behaviors of human beings in the real communication and interaction process by an intelligent bionic algorithm;
3) the method has strong cross-platform capability, easily realizes the application of the 3D rendering technology on the platforms such as iOS, Android, Windows, Mac OS and Linux by being compatible with various mainstream browsers, gets rid of the dependence on the performance of terminal hardware, and greatly reduces the application deployment threshold and the use cost.
In order to achieve the above purpose, the technical invention provides the following technical scheme: a method for rendering real-time behaviors of a 3D digital virtual human based on WebGL comprises the following specific steps:
3.1 providing 3D rendering capabilities for browsers using WebGL
A scene, coordinate axes, a camera and the like are introduced through a WebGL rendering channel, a vertex shader and a fragment shader are utilized to create a 3D digital virtual human model consisting of Geometry and Material, the 3D digital virtual human model is added into a specified scene, DOM and 3D are combined, and the rendering is performed to provide powerful computational support and low-consumption application of browser resources.
3.2 real simulation of human expression and behavior by intelligent bionic algorithm
The Intelligent Bionic Algorithm (Intelligent Algorithm) is used for simulating the natural expression, mouth shape and limb actions of human beings in the real communication and interaction process, and the visual and interactive effects of the dialogue and communication between the 3D digital virtual human being and the human beings like real human beings are realized by means of various terminal hardware devices.
3.3 extremely strong Cross-platform capability
WebGL combines JavaScript and OpenGL together, hardware 3D accelerated rendering is provided for HTML5 Canvas by adding OpenGL and JavaScript binding, so that a Web developer can display 3D scenes and models in a browser more smoothly by means of a system display card, and complicated navigation and data visualization can be created. Obviously, the WebGL technical standard avoids the trouble of developing a webpage-dedicated rendering plug-in, can be used for creating a website page with a complex 3D structure, and even can be used for designing a 3D webpage game and the like, is not limited to the limitations of systems such as iOS, Android, Windows, Mac OS, Linux and the like, and has excellent cross-platform capability.
Because the performance of the cloud server and the client hardware equipment is not depended any more, any plug-in or component is not required to be installed, the method is realized through a unified, standard and cross-platform OpenGL interface, the accelerated rendering capability of the bottom graphics hardware is fully utilized, the application range of the 3D rendering technology is effectively expanded, and the deployment difficulty and cost are greatly reduced.
Description of the drawings
FIG. 1WebGL real-time behavior rendering technique
FIG. 2: 3D persona settings
FIG. 3: simulated interaction and conversation
FIG. 4 WebGL-compatible mainstream browser
Fifth, detailed description of the invention
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the present invention and not all of it. All other examples, which can be obtained by a person skilled in the art without any inventive step based on the examples in the present invention, are within the scope of protection of the present invention.
Referring to fig. 1-2-3-4, a method for rendering real-time behaviors of a 3D digital virtual human based on WebGL includes:
5.1 WebGL 3D rendering techniques
5.1.1 technical overview of WebGL
WebGL (Web graphics library) is a JavaScript API that renders high-performance interactive 3D and 2D graphics in any compatible Web browser without the use of plug-ins. WebGL is implemented by introducing an API that is very consistent with OpenGL ES 2.0, which can be used in the HTML5< canvas > element. This consistency allows the API to take advantage of the hardware graphics acceleration provided by the user's device.
5.1.2 technical implementation method
A scene, a coordinate axis, a camera and the like are introduced through a WebGL rendering channel, a 3D digital virtual human model composed of Geometry and Material is created by using a vertex shader and a fragment shader and is added into a specified scene, DOM and 3D are combined for rendering, the 3D scene and the model are displayed in a browser more smoothly, complex navigation and data visualization can be created, the trouble of developing a special rendering plug-in for a webpage is avoided, the method can be used for creating a website page with a complex 3D structure and even can be used for designing a 3D webpage game and the like.
5.2 Intelligent Bionic Algorithm (Intelligent Bionic Algorithm)
Character role setting of 5.2.1 thousand faces
And character images with various distinct individual characteristics are created through role setting and big data analysis, and communication experience of thousands of people is created for users.
5.2.2 true visual, auditory, and Interactive experiences
The character image, the expression, the mouth shape and the limb actions of the intelligent dialogue system are processed through 3D modeling, WebGL rendering technology, TTS (Text-To-Speech) voice technology and the like, and a vivid interactive dialogue effect of communication between a user and a real person is created. The high-modulus technology similar to CG animation level is used, more dynamic skeletons and real-time calculation technology are included, and the expression of the '3D digital virtual human' is ensured to be delicate to micro-expression. While supporting complex behavioral manifestations. Meanwhile, material rendering is introduced to ensure the texture of human skin, hair and clothes, so that the immersive visual experience which is true and unreasonable is provided more efficiently and powerfully.
5.2.3 smooth and natural communication
The Simulation Technology (Simulation Technology) simulates real communication between human beings, and realizes the visual and interactive effects of 'like a real person' of the 3D digital virtual human body and human beings in conversation and communication. The real life or working scene is introduced into the conversation flow, the ability of identifying the intention of the user is greatly improved, the accuracy is high and reaches more than 99.5%, the intelligent conversation process is smooth and natural, and the problem of artificial intelligence impairment is thoroughly solved.
5.2.4 scene reproduction
A realistic 3D digital scene is created by Skybox or a real environment is introduced directly by AR augmented reality technology creating an immersive environment experience.
5.2.5 learning and evolutionary Capacity
The ability of simulation and simulation of an Intelligent Interactive dialog Engine (Intelligent dialog Engine) is continuously improved by using an artificial Neural Network (artificial Neural Network) and Deep Learning (Deep Learning).
5.3 Cross-platform capability
5.3.1 Cross-platform capability
WebGL combines JavaScript and OpenGL together, hardware 3D accelerated rendering is provided for HTML5 Canvas by adding OpenGL and JavaScript binding, so that a Web developer can display 3D scenes and models in a browser more smoothly by means of a system display card, and complicated navigation and data visualization can be created. Obviously, the WebGL technical standard avoids the trouble of developing a webpage-dedicated rendering plug-in, can be used for creating a website page with a complex 3D structure, and even can be used for designing a 3D webpage game and the like, is not limited to the limitations of systems such as iOS, Android, Windows, Mac OS, Linux and the like, and has excellent cross-platform capability.
5.3.2 compatible mainstream browser
Currently, browsers supporting WebGL are: firefox 4+, Google Chrome 9+, Opera 12+, Safari5.1+, Internet Explorer 11+, Microsoft Edge build 10240+, and so on.
Of course, some features of WebGL also require hardware device support by the user. Such as: the WebGL 2API introduces support for most OpenGL ES 3.0 function sets; it is provided through the WebGL2RenderingContext interface. The < Canvas > element is also used by the Canvas API for 2D graphics processing on web pages.
5.3.3 Low Performance consumption
The real-time behavior rendering of the 3D digital virtual human is rendered by using the WebGL technology, the performance requirements on a cloud server and client hardware equipment are low, any plug-in or component is not required to be installed, the real-time behavior rendering is realized through a uniform, standard and cross-platform OpenGL interface, the accelerated rendering capability of the bottom graphics hardware is fully utilized, the application range of the 3D rendering technology is effectively expanded, and the deployment difficulty and cost are greatly reduced.
The technology is effectively verified in the projects of 3D digital virtual human software service of China industrial and commercial banks, second pursuit application of Chengdu-bang intelligent technology limited company and the like, and good customer feedback is obtained. And can be widely applied to: 1) banks, insurance or securities; 2) automotive and automotive; 3) public trip; 4) television media program interaction; 4) customer service, etc. to an intelligent conversation system (commonly known as a "conversation robot" or a "chat robot") to meet the application requirements of various contactless services.
Although a few examples of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (4)
1. A method for realizing simulation, simulation and learning of human real communication and interaction in a browser by a WebGL technology is characterized by comprising the following steps:
A. providing 3D rendering capabilities for browsers using WebGL
A scene, coordinate axes, a camera and the like are introduced through a WebGL rendering channel, a vertex shader and a fragment shader are utilized to create a 3D digital virtual human model consisting of Geometry and Material, the 3D digital virtual human model is added into a specified scene, DOM and 3D are combined, and the rendering is performed to provide powerful computational support and low-consumption application of browser resources.
B. The intelligent bionic Algorithm is used for simulating the expression and behavior of human beings really, the intelligent bionic Algorithm (intelligent Algorithm) is used for simulating the natural expression, mouth shape and limb actions of the human beings in the real communication and interaction process, and the visual and interaction effects of the dialogue and communication between the 3D digital virtual human beings and the human beings like real human beings are realized by means of various terminal hardware devices.
C. Has strong cross-platform capability
WebGL combines JavaScript and OpenGL together, hardware 3D accelerated rendering is provided for HTML5 Canvas by adding OpenGL and JavaScript binding, so that a Web developer can display 3D scenes and models in a browser more smoothly by means of a system display card, and complicated navigation and data visualization can be created. Obviously, the WebGL technical standard avoids the trouble of developing a webpage-dedicated rendering plug-in, can be used for creating a website page with a complex 3D structure, and even can be used for designing a 3D webpage game and the like, is not limited to the limitations of systems such as iOS, Android, Windows, Mac OS, Linux and the like, and has excellent cross-platform capability.
Because the performance of the cloud server and the client hardware equipment is not depended any more, any plug-in or component is not required to be installed, the method is realized through a unified, standard and cross-platform OpenGL interface, the accelerated rendering capability of the bottom graphics hardware is fully utilized, the application range of the 3D rendering technology is effectively expanded, and the deployment difficulty and cost are greatly reduced.
2. The method for realizing simulation, simulation and learning of human real communication and interaction in a browser through WebGL technology as claimed in claim 1, wherein the specific process of step A is as follows:
a scene, a coordinate axis, a camera and the like are introduced through a WebGL rendering channel, a 3D digital virtual human model composed of Geometry and Material is created by using a vertex shader and a fragment shader and is added into a specified scene, DOM and 3D are combined for rendering, the 3D scene and the model are displayed in a browser more smoothly, complex navigation and data visualization can be created, the trouble of developing a special rendering plug-in for a webpage is avoided, the method can be used for creating a website page with a complex 3D structure and even can be used for designing a 3D webpage game and the like.
3. The method for realizing simulation, simulation and learning of human real communication and interaction in a browser through WebGL technology as claimed in claim 1, wherein the specific process of step B is as follows:
using Intelligent biomimetic Algorithm (Intelligent Bionic Algorithm):
1) setting characters of thousands of people and faces
And character images with various distinct individual characteristics are created through role setting and big data analysis, and communication experience of thousands of people is created for users.
2) True visual, auditory and interactive experience
The character image, the expression, the mouth shape and the limb actions of the intelligent dialogue system are processed through 3D modeling, WebGL rendering technology, TTS (Text-To-Speech) voice technology and the like, and a vivid interactive dialogue effect of communication between a user and a real person is created. The high-modulus technology similar to CG animation level is used, more dynamic skeletons and real-time calculation technology are included, and the expression of the '3D digital virtual human' is ensured to be delicate to micro-expression. While supporting complex behavioral manifestations. Meanwhile, material rendering is introduced to ensure the texture of human skin, hair and clothes, so that the immersive visual experience which is true and unreasonable is provided more efficiently and powerfully.
3) Smooth and natural communication and conversation
The Simulation Technology (Simulation Technology) simulates real communication between human beings, and realizes the visual and interactive effects of 'like a real person' of the 3D digital virtual human body and human beings in conversation and communication. The real life or working scene is introduced into the conversation flow, the ability of identifying the intention of the user is greatly improved, the accuracy is high and reaches more than 99.5%, the intelligent conversation process is smooth and natural, and the problem of artificial intelligence impairment is thoroughly solved.
4) Scene reproduction
A realistic 3D digital scene is created by Skybox or a real environment is introduced directly by AR augmented reality technology creating an immersive environment experience.
5) Ability to learn and evolve
The ability of simulation and simulation of an Intelligent Interactive dialog Engine (Intelligent dialog Engine) is continuously improved by using an artificial Neural Network (artificial Neural Network) and Deep Learning (Deep Learning).
4. The method for realizing simulation, simulation and learning of human real communication and interaction in a browser through WebGL technology as claimed in claim 1, wherein the specific process of step C is as follows:
1) cross-platform capability
The method has the advantages that JavaScript and OpenGL are combined together by WebGL, hardware 3D accelerated rendering is provided for HTML5 Canvas by adding OpenGL and JavaScript binding, so that a Web developer can more smoothly display 3D scenes and models in a browser by means of a system display card, and complicated navigation and data visualization can be created. Obviously, the WebGL technical standard avoids the trouble of developing a webpage-dedicated rendering plug-in, can be used for creating a website page with a complex 3D structure, and even can be used for designing a 3D webpage game and the like, is not limited to the limitations of systems such as iOS, Android, Windows, Mac OS, Linux and the like, and has excellent cross-platform capability.
2) Compatible mainstream browser
Currently, browsers supporting WebGL are: firefox 4+, Google Chrome 9+, Opera 12+, Safari5.1+, Internet Explorer 11+, Microsoft Edge build 10240+, etc., see FIG. 4 for details.
Of course, some features of WebGL also require hardware device support by the user. Such as: the WebGL 2API introduces support for most OpenGL ES 3.0 function sets; it is provided through the WebGL2RenderingContext interface. The < Canvas > element is also used by the Canvas API for 2D graphics processing on web pages.
3) Low performance consumption
The real-time behavior rendering of the 3D digital virtual human is rendered by using the WebGL technology, the performance requirements on a cloud server and client hardware equipment are low, any plug-in or component is not required to be installed, the real-time behavior rendering is realized through a uniform, standard and cross-platform OpenGL interface, the accelerated rendering capability of the bottom graphics hardware is fully utilized, the application range of the 3D rendering technology is effectively expanded, and the deployment difficulty and cost are greatly reduced.
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Application publication date: 20201103 |