Method for physically deforming skin of virtual human based on hierarchical model

Abstract

The invention discloses a method for physically deforming the skin of virtual human based on a hierarchical model, which comprises the following steps: (1) constructing the hierarchical model, namely, firstly processing an original model to generate a skeleton layer model used for controlling motions, a physical layer model used for physical deformation and a surface layer model used for final drawing, and establishing mapping relationships between a skeleton layer and a physical layer and between the physical layer and a surface layer; (2) producing the physical deformation, namely, after finishing constructing the hierarchical model, causing the skeleton layer to generate a motion trend and drive the physical layer to produce the physical deformation according to a mode of motion set bya user; and (3) driving the skin, namely, in the physical deformation process, driving the surface layer to motion and change along with the physical layer to generate the dynamic effect of the deformation of the skin according to the mapping relationship between the physical layer and the surface layer. In the method, on the basis of keeping the advantage of the sense of reality of the physical deformation and in combination with the characteristic of the data organization flexibility of the hierarchical model, an elaborate network used for drawing the skin of the virtual human and a simplified network used for deformation control and physical calculation are constructed respectively, which reduces calculation overhead on the premise of ensuring the precise deformation process of the virtual human and drawing reality effect.

Description

technical field [0001] The invention belongs to the technical fields of computer virtual reality and computer graphics, and in particular relates to a human skin deformation method in virtual human simulation and virtual human motion simulation technology. Background technique [0002] With the continuous development of computer software and hardware technology, the ability of data acquisition and presentation is getting stronger and stronger. In particular, virtual human simulation and simulation have been widely used in many fields such as film and television entertainment, virtual reality, and telemedicine. However, how to present the virtual human form more realistically and improve the real-time performance to broaden the scope of application still needs in-depth research to meet the needs of different fields. Among them, human skin, as the most external form of expression of a virtual person, has received more attention. Human skin deformation techniques can generall...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, comprehensively use geometric methods and physical methods, and provide a method for physical deformation of virtual human skin based on a layered model. Due to the flexible organization of model data, a fine mesh for virtual human skin drawing and a simplified mesh for deformation control and physical calculation are respectively constructed. On the premise of ensuring the accurate deformation process and real rendering effect of the virtual human, the Reduced computational overhead, resulting in an efficient method for virtual human skin morphing

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