Skin deformation method of 3D animation character model based on geometric deformation

A character model, geometric deformation technology, applied in animation production, image data processing, instruments, etc., can solve the problems of slow calculation speed, difficult to achieve real-time performance, reduce the realism of skin deformation, etc., to ensure real-time performance and improve production efficiency. Effect
CN103679783BActive Publication Date: 2017-04-19INST OF AUTOMATION CHINESE ACAD OF SCI +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF AUTOMATION CHINESE ACAD OF SCI
Publication Date
2017-04-19

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Abstract

The invention relates to a geometric deformation based skin deformation method for a three-dimensional animated character model. The method comprises the steps that according to the skeleton structure of an initial character model, the initial character model is divided into joint areas and bone areas, and deformation control points among the bone areas are calibrated manually; according to the body zoom parameters set by a user and the calibrated deformation control points, geometric deformation is implemented on the bone areas of the initial character model based on a free deformation technology; after the geometric deformation, influence of joints on apexes is adjusted; and according to the influence of the joints on the apexes of the joint and bone areas, the character model is driven to make translational and rotary movement via a dual-quaternion method to generate vivid and lifelike skin deformation effect. The skin deformation method of the invention can overcome the defects as collapse and shape explosion caused by large moving amplitude of the model, and obtains more real skin deformation while ensuring the instantaneity.
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Description

technical field

[0001] The invention belongs to the technical fields of computer animation and computer graphics, and in particular relates to a skin deformation method of a three-dimensional animation character model based on geometric deformation. Background technique

[0002] With the development of computer hardware technology and computer software technology, especially graphics and image technology, 3D character animation technology has been widely used in the fields of film and television animation, entertainment games, distance education and military simulation. As an important part of 3D character animation, skin deformation technology is one of the most difficult and challenging research topics in computer graphics. There are two main reasons: (1) The structure of the human body itself is very complex, and it is difficult to understand in biomechanics and graphics. In the field of science, there has not been a model that can fully approximate and simulate human ski...

Claims

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